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Tytuł:
Unsteady electro-magneto hydrodynamic flow and heat transfer of two ionized fluids in a rotating system with Hall currents
Autorzy:
Raju, T. Linga
Rao, B. Venkat
Powiązania:
https://bibliotekanauki.pl/articles/2174167.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
transfer ciepła
przepływ nieustalony
plazma
pole magnetyczne
pole elektryczne
unsteady flow
magnetic field
electric field
immiscible flow
plasma
Hall effect
rotating frame
heat transfer
insulating plate
Opis:
An unsteady flow and heat transmission of ionized gases via a horizontal channel enclosed by non-conducting plates in a rotating framework with Hall currents is examined using electro-magnetohydrodynamic (EMHD) two-fluid heat flow. The Hall current impact is taken into account by assuming that the gases are totally ionized, the applied transverse magnetic field is very strong. For temperature and velocity distributions in two-fluid flow regions, the governing equations are solved analytically. For numerous physical parameters such as the Hartmann number, Hall parameter, rotation parameter, viscosity ratio, and so on, numerical solutions are visually displayed. It was discovered that an increase in temperature in the two regions is caused by the thermal conductivity ratio. It was also realized that an increase in rate of heat transfer coefficient at the plates is caused by either the Hartman number or the Hall parameter.
Źródło:
International Journal of Applied Mechanics and Engineering; 2022, 27, 1; 125--145
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of non-stationary temperature field generated by a shaftless screw conveyor heated by Joule-Lenz effect
Autorzy:
Ledakowicz, Stanisław
Piddubniak, Olexa
Powiązania:
https://bibliotekanauki.pl/articles/2086780.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
screw reactor
rotating shaftless screw
electric heating
non-stationary temperature field
analytico-numerical method
reaktor śrubowy
obrotowa śruba bezwałowa
ogrzewanie elektryczne
niestacjonarne pole temperatury
metoda analityczno-numeryczna
Opis:
The non-stationary problem of temperature distribution in a circular cylindrical channel of infinite length filled with a homogeneous biomass material moving with a constant velocity in the axial direction was investigated. The heat source was a shaftless helical screw (or auger), which was heated with an electric current due to the Joule–Lenz effect and rotated uniformly around the axis of symmetry of the channel. Similar problems arise in the thermal processing of biomaterials using screw conveyor in pyrolysis and mass sterilization and pasteurization of food products. The problem is solved using the expansion of given and required functions in Fourier series over angular coordinate and integral Fourier and Laplace transforms over axial coordinate and time, respectively. As a result, the temperature field is obtained as the sum of two components, one of which, global, is proportional to time, and the other, which forms the microstructure of the temperature profile, is given by Fourier–Bessel series. The coefficients of the series are determined by the integrals calculated using the Romberg method. Based on the numerical calculations, the analysis of the space-time microstructure of the temperature field in the canal was performed. A significant dependence of the features of this microstructure on the geometric, kinematic and thermodynamic characteristics of the filling biomass and the screw was revealed.
Źródło:
Chemical and Process Engineering; 2021, 42, 2; 119--137
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electro-magnetohydrodynamic two fluid flow of ionized-gases with hall and rotation effects
Autorzy:
Linga Raju, T.
Powiązania:
https://bibliotekanauki.pl/articles/2174161.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
pole magnetyczne
pole elektryczne
plazma
wymiana ciepła
magnetic field
electric field
immiscible flow
plasma
Hall effect
rotating frame
heat transfer
insulating plate
Opis:
An electro-magnetohydrodynamic (EMHD) two fluid flow and heat transfer of ionized gases through a horizontal channel surrounded by non-conducting plates in a rotating framework with Hall currents is investigated. The Hall effect is considered with an assumption that the gases are completely ionized and the strength of the applied transverse magnetic field is strong. The governing equations are solved analytically for the temperature and velocity distributions in two fluid flow regions. The numerical solutions are demonstrated graphically for various physical parameters such the Hartmann number, Hall parameter, rotation parameter, and so on. It was noticed that an increment is either due to the Hall parameter or the rotation parameter reduces the temperature in the two regions.
Źródło:
International Journal of Applied Mechanics and Engineering; 2021, 26, 4; 128--144
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of low-frequency electric field screening on motility of human sperm
Autorzy:
Górski, R.
Kotwicka, M.
Skibińska, I.
Jendraszak, M.
Wosiński, S.
Powiązania:
https://bibliotekanauki.pl/articles/2085910.pdf
Data publikacji:
2020
Wydawca:
Instytut Medycyny Wsi
Tematy:
human spermatozoa
male infertility
50 Hz EMF – 50 Hz electromagnetic field
dielectric screen
ADR Technology®
Opis:
Introduction. The human body is constantly exposed to an extremely low electromagnetic field (ELF-EMF), in particular at 50 Hz, emitted by power lines, domestic distribution lines, electrical appliances, etc. It is assumed that the increase in electromagnetic exposure may cause adverse effects upon human health, as well as raising concerns regarding the impact on human fertility. Objective. The aim of this in vitro study was to investigate the influence of ELF-EMF with a frequency of 50 Hz on the motility of human sperm. At the same time, the effectiveness of the dielectric screen constructed by ADR Technology® in absorbing the emitted radiation was examined. Materials and method. Semen samples of 20 patients were exposed to the influence of an extremely low electromagnetic field. After 5, 15 and 30 min., spermatozoa motility was analysed using a computer-assisted spermatozoa motility analysis system. The following sperm motility parameters were examined: 1) velocity straight linear motility; 2) cross-beat frequency; 3) lateral head displacement; 4) homogeneity of progressive motility velocity. Results. It was found that the ELF-EMF presented a negative effect on the motility of human spermatozoa. A significant decrease in spermatozoa motility speed and a significant increase in lateral head deviation values were observed under the influence of the electromagnetic field. ELF-EMF did not show an effect on either lateral head displacement or homogeneity of progressive motility velocity. Conclusions. A positive effect of the dielectric screen ADR Technology® was found. This effect compensated spermatozoa motility changes induced with ELF-EMF.
Źródło:
Annals of Agricultural and Environmental Medicine; 2020, 27, 3; 427-434
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Boundary effects on electrothermal convection in a dielectric fluid layer
Autorzy:
Ravisha, M.
Raghunatha, K. R.
Mamatha, A. L.
Shivakumara, I. S.
Powiązania:
https://bibliotekanauki.pl/articles/240648.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
boundary effect
dielectric fluid
AC electric field
thermal convection
konwekcja termiczna
płyn dielektryczny
warunki brzegowe
Opis:
The instability characteristics of a dielectric fluid layer heated from below under the influence of a uniform vertical alternating current (AC) electric field is analyzed for different types of electric potential (constant electric potential/ electric current), velocity (rigid/free) and temperature boundary conditions (constant temperature/heat flux or a mixed condition at the upper boundary). The resulting eigenvalue problem is solved numerically using the shooting method for various boundary conditions and the solution is also found in a simple closed form when the perturbation heat flux is zero at the boundaries. The possibility of a more precise control of electrothermal convection (ETC) through various boundary conditions is emphasized. The effect of increasing AC electric Rayleigh number is to hasten while that of Biot number is to delay the onset of ETC. The system is more stable for rigid-rigid boundaries when compared to rigid-free and least stable for free-free boundaries. The change of electric potential boundary condition at the upper boundary from constant electric potential to constant electric current is found to instill more stability on the system.
Źródło:
Archives of Thermodynamics; 2019, 40, 1; 3-19
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Different Ignition Responses of Powdery and Bulky 1,3,5-Triamino-2,4,6-trinitrobenzene (TATB) Based Polymer-bonded Explosives under Ultra-high Voltage Electrostatic Discharge
Autorzy:
Lyu, Z.
Long, X.
Li, Z.
Dai, X.
Deng, C.
He, S.
Li, M.
Yao, K.
Wen, Y.
Powiązania:
https://bibliotekanauki.pl/articles/358240.pdf
Data publikacji:
2018
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
electrostatic spark sensitivity
ultra-high voltage electrostatic discharge
thermal effect
electric field effect
Opis:
The electric spark induced ignition mechanism for explosives needs further study. The ignition of powdery and bulky TATB by electrostatic discharge (ESD) was investigated. Up to 200 kV ultra-high voltage ESD was applied to powdery and bulky explosives of two TATB-based polymer-bonded explosives (named PBX-1 and PBX-2). The results showed that the spark sensitivities of powdery and bulky explosives are extremely different for the same formulation. The 50% ignition voltages of powdery PBX-1 and PBX-2 were 10.8 kV and 8.5 kV, respectively, while the values for the bulky samples (tablets) were not less than 200 kV. Both heat and the electric field can be transmitted into the powdery samples, on the other hand only the electric field can be transmitted into the bulk samples. The electric field has a smaller contribution while the heat has a larger contribution to the ignition during an ESD, i.e., the thermal effect plays a main role in the ignition process. Our experimental results are in good agreement with recent results calculated by density functional theory.
Źródło:
Central European Journal of Energetic Materials; 2018, 15, 2; 283-298
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electroplastic deformation by twinningmetals
Autorzy:
Savenko, V. V.
Powiązania:
https://bibliotekanauki.pl/articles/386875.pdf
Data publikacji:
2018
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
electroplastic deformation
ponderomotive action current
pinch effect
skin effect
pulse current
magnetic field
electric field vortex field hall
mechanical pressure
maximum axial force
Opis:
The article deals with theoretical and experimental approaches to electroplastic deformation caused by twinning of metals. The author specifies physical fundamentals of Kinetics regarding the development of twinning caused by the excitation of electronic subsystem of metals. Physical models of new channels for the realization of twinning aroused under conditions of electroplasticity have been discussed. Mechanisms of plasticized influence of a surface electric charge have been defined as well as the contribution of a dynamic pinch-effect in the elastic plastic deformation of metals with the participation of the intrinsic magnetic field of the current. The dynamic pinch effect creates ultrasonic vibration of the lattice system while Kinetics changes and plastic deformation are stimulated increasing the amplitude of the oscillations of rectilinear dislocations and the periodic change in the position of the dislocation loops with an increase in the probability of detachment of dislocations from the stoppers. When deformed above the yield point and due to the pinch effect the intrinsic magnetic field of the current diffuses into the crystal where the diffusion rate depends both on the conductivity of the metal and on the frequency of the current. It is necessary to take into account the physical conditions for the creation of ponderomotive effects in relation to specific technically important materials for the practical use of electroplastic deformation technology, especially when processing metals with pressure.
Źródło:
Acta Mechanica et Automatica; 2018, 12, 4; 259-264
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Różnorodność składu betonu i jego wpływ na natężenie pola elektrycznego
The variety of concrete components and its effect on the on the electric field intensity
Autorzy:
Choroszucho, A.
Powiązania:
https://bibliotekanauki.pl/articles/378359.pdf
Data publikacji:
2018
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
natężenie pola elektrycznego
beton
parametry elektryczne betonu
względna przenikalność elektryczna
konduktywność
Opis:
Celem artykułu jest dokładna analiza wpływu ściany wykonanej z betonu zwykłego na wartości natężenia pola elektrycznego. Rozpatrywano dwa warianty ścian o różnej grubości. W analizie uwzględniono zmienność parametrów elektrycznych betonu (względna przenikalność elektryczna oraz konduktywność), które są używane w dostępnej literaturze. Wartości natężenia pola elektrycznego zostały wyznaczone przy dwóch częstotliwościach stosowanych w komunikacji bezprzewodowej (f = 2,4 GHz oraz f = 5 GHz). Różnice w natężeniu pola elektrycznego wynikające z dwukrotnego zwiększenia grubości ściany otrzymane przy tej samej częstotliwości zostały opisane za pomocą współczynnika st1. Do analizy wykorzystano numeryczną metodę różnic skończonych w dziedzinie czasu (FDTD).
The aim of the article is detailed analyze the influence of a wall made of ordinary concrete on the values of the electric field intensity. Two variants of walls of different thickness were considered. The analysis includes the variability of electrical parameters of concrete (relative electrical permittivity and conductivity), which are used in the available literature. The values of the electric field intensity were determined at two frequencies used in wireless communication system (f=2.4 GHz and f=5 GHz). The differences in the intensity of the electric field resulting from the double increase in the wall thickness obtained at the same frequency have been described using the coefficient st1. For the analysis all cases, the finite difference time domain method (FDTD) was used.
Źródło:
Poznan University of Technology Academic Journals. Electrical Engineering; 2018, 93; 193-204
1897-0737
Pojawia się w:
Poznan University of Technology Academic Journals. Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of pulsed electric field (PEF) on mass transfer and quality parameters of osmodehydrated fruits – a review
Wpływ pulsacyjnego pola elektrycznego (PEF) na wymianę masy i jakość owoców odwodnionych osmotycznie - przegląd badań
Autorzy:
Tylewicz, U.
Powiązania:
https://bibliotekanauki.pl/articles/5303.pdf
Data publikacji:
2017
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
fruit
quality
dehydration
osmotic dehydration
mass transfer
pulsed electrical field
food product
moisture
minimally processed product
Źródło:
Nauki Inżynierskie i Technologie; 2017, 4(27)
2449-9773
2080-5985
Pojawia się w:
Nauki Inżynierskie i Technologie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of magnetic field on the efficiency of a silicon solar cell under an intense light concentration
Autorzy:
Zoungrana, M.
Zerbo, I.
Soro, B.
Savadogo, M.
Tiedrebeogo, S.
Bathiebo, D. J.
Powiązania:
https://bibliotekanauki.pl/articles/102700.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
conversion efficiency
electric power
fill factor
light concentration
magnetic field
optimal charge load
Opis:
This work put in evidence, magnetic field effect the electrical parameters of a silicon solar cell illuminated by an intense light concentration: external load electric power, conversion efficiency, fill factor, external optimal charge load. Due to the high photogeneration of a carrier in intense light illumination mode, in addition of magnetic field, we took into account the carrier gradient electric field in the base of the solar cell. Taking into account this electric field and the applied magnetic field in our model led to new analytical expressions of the continuity equation, the photocurrent and the photovoltage. In this work, we used the electric power curves versus junction dynamic velocity (Sj) to determine, according to magnetic field, the maximum electric power Pelmax and we calculate the solar cell conversion efficiency (η). We also used the J-V characteristics to determine the solar cell short circuit density current (Jcc) and the open circuit voltage (Vco) under magnetic field and we calculate the fill factor (FF). Finally, we used simultaneously the J-V characteristics and equipower curves to determine the optimal external load resistance. The results of this study have showed that the maximum electric power and the conversion efficiency are higher than those of monofacial and bifacial silicon solar cells illuminated by conventional light but they decreased with the increase of magnetic field.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 2; 133-138
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effect of Return Electrode Position on Induced Electric Fields for Electrical Stimulation of Retinal Ganglion Cells
Autorzy:
Celik, M.
Powiązania:
https://bibliotekanauki.pl/articles/1031744.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
electrical stimulation
electric field
current density
temperature
retina
visual prostheses
Opis:
Age-related macular degeneration and retinitis pigmentosa are the most countered eye diseases that damage photoreceptors and cause to lose the visual sense. To regain the visual sense, studies are focused on the electrical stimulation of nerve cells remain intact. The electrical stimulation is carried out with the electrode arrays that include a certain number of stimulation electrodes and a common return electrode. In this study, the retinal stimulation is modelled using a computational model to investigate stimulation performance depending on the return electrode position and its geometrical properties. Stimulation induced electric field, current density and temperature over the retinal tissue are examined. It is seen that closer placement of return electrode and stimulation electrodes causes high electric field intensity and current density between electrodes, which is quite risky for long term chronic implementation by the reason of the increase in the temperature beyond the safe limits. It is concluded that there is an indispensability for the distances, three to five times of the electrode diameter, between electrodes to avoid electrode corrosion and tissue damage.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 493-495
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of electric field on dispersion of a solute in an MHD flow through a vertical channel with and without chemical reaction
Autorzy:
Umavathi, J. C.
Kumar, J. P.
Gorla, R. S. R.
Gireesha, B. J.
Powiązania:
https://bibliotekanauki.pl/articles/265686.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
dyspersja Taylora
magnetohydrodynamika
reakcja chemiczna
Taylor dispersion
immiscible fluids
conducting fluid
MHD
chemical reaction
Opis:
The longitudinal dispersion of a solute between two parallel plates filled with two immiscible electrically conducting fluids is analyzed using Taylor’s model. The fluids in both the regions are incompressible and the transport properties are assumed to be constant. The channel walls are assumed to be electrically insulating. Separate solutions are matched at the interface using suitable matching conditions. The flow is accompanied by an irreversible first-order chemical reaction. The effects of the viscosity ratio, pressure gradient and Hartman number on the effective Taylor dispersion coefficient and volumetric flow rate for an open and short circuit are drawn in the absence and in the presence of chemical reactions. As the Hartman number increases the effective Taylor diffusion coefficient decreases for both open and short circuits. When the magnetic field remains constant, the numerical results show that for homogeneous and heterogeneous reactions, the effective Taylor diffusion coefficient decreases with an increase in the reaction rate constant for both open and short circuits.
Źródło:
International Journal of Applied Mechanics and Engineering; 2016, 21, 3; 683-711
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of rotation on the onset of electrohydrodynamic instability of an elastico-viscous dielectric fluid layer
Autorzy:
Rana, G. C.
Chand, R.
Sharma, V.
Powiązania:
https://bibliotekanauki.pl/articles/199843.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Walters' fluid
(model B’ fluid
rotation
AC electric field
electrohydrodynamics
viscosity
viscoelasticity
rotacja
pole elektryczne
elektrohydrodynamika
lepkość
lepkosprężystość
płyn Waltersa
elasto-lepki płyn Waltersa
Opis:
In this paper the combined effect of uniform rotation and AC electric field on the onset of instability in a horizontal layer of an elastico-viscous fluid stimulated by the dielectrophoretic force due to the variation of dielectric constant with temperature is studied. Walters’ (model B’) fluid model is used to describe rheological behaviour of an elastico-viscous fluid. The onset criterions for stationary and oscillatory convection are derived for the case of free-free boundaries. It is observed that Walters’ (model B’) fluid behaves like an ordinary Newtonian fluid and rotation has stabilizing influence whereas AC electric field has destabilizing influence on the stability of the system. The necessary condition for the occurrence of oscillatory convection is also obtained. The present results are in good agreement with the earlier published results.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 1; 143-149
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ pola elektrycznego na tarcie wybranych elastomerów po stali w środowisku silnikowych olejów bazowych
The effect of an electric field on the friction of selected elastomers against steal in a motor base oil’s environment
Autorzy:
Gajewski, J. B.
Głogowski, M. J.
Wieleba, W.
Powiązania:
https://bibliotekanauki.pl/articles/188744.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
pin-on-disc
tarcie
pole elektryczne
olej bazowy
elastomer
dodatek uszlachetniający
friction
electric field
base oil
additive
Opis:
W artykule przedstawiono wyniki badań nad wpływem zewnętrznego stałego pola elektrycznego na współczynnik tarcia wybranych elastomerów podczas tarcia o powierzchnię stalową na stanowisku „pin-on-disc”. W celach porównawczych prowadzono także badania bez zewnętrznego pola elektrycznego. W badanym układzie stosowano próbki trzech różnych elastomerów, syntetyczne oleje bazowe PAG i PAO oraz ich mieszaniny z dodatkami uszlachetniającymi – przeciwzatarciowym (ZDDP) i modyfikatorem tarcia (IRGALUBE F10A), a także stalowy przeciwelement.Wybrane do badań elastomery stosowane są do wytwarzania uszczelnień wargowych. Stwierdzono, że zewnętrzne stałe pole elektryczne istotnie wpływa na współczynnik tarcia, a wielkość tego wpływu zależy od rodzaju elastomeru oraz oleju bazowego i jego mieszanin z dodatkami uszlachetniającymi.
The paper presents the experimental results of research on the effect of an external DC electric field on the coefficient of friction of selected elastomers during their rubbing against a steel surface in the “pin–on– disc” experimental set-up. The tests were also carried out without any external DC electric field to compare the coefficients of friction obtained in both cases. In the tests, three different elastomers were used: pure PAG and PAO synthetic base oils and their blends with two additives – antiwear (ZDDP) and friction modifier (IRGALUBE F10A), and a steel counterface. The elastomers selected and used in the tests are those applied to the manufacture of rotary lip seals. It was found that the external DC electric field exerts a significant effect on the coefficient of friction, which in turn depends on the type of elastomer and the base oil and its blends with the additives used.
Źródło:
Tribologia; 2015, 3; 21-31
0208-7774
Pojawia się w:
Tribologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Crystal electric field parameters determination for R2Fe14B compounds based on Yamada - Kato model
Autorzy:
Bogacz, B. F.
Pędziwiatr, A. T.
Powiązania:
https://bibliotekanauki.pl/articles/147342.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
crystal electric field parameters
model Yamada-Kato
Mössbauer effect
permanent magnet materials
spin reorientation
Opis:
Semi-empirical model developed by Yamada-Kato enables calculation of magnetic spin directions for R2Fe14B compounds, based on minimization of free energy, and - in further steps - determination of spin reorientation temperatures for transitions from basal plane to axial easy magnetization direction. In our study, this model has been successfully used to determine crystal field and exchange field parameters for Er2-xCexFe14B compounds based on spin reorientation temperatures obtained experimentally from Mössbauer measurements.
Źródło:
Nukleonika; 2013, 58, 1; 31-33
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
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