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Wyszukujesz frazę "Csach, K." wg kryterium: Autor


Tytuł:
Influence of Plastic Deformation on Devitrification of $Fe_{73.5}Nb_{3}Cu_{1}Si_{13.5}B_{9}$ Amorphous Alloy
Autorzy:
Csach, K.
Miškuf, J.
Juríková, A.
Powiązania:
https://bibliotekanauki.pl/articles/1367306.pdf
Data publikacji:
2014-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.43.Dq
62.20.Hg
Opis:
The method of thermogravimetry in external magnetic field was modified using square wave alternate magnetic field for an estimation of the temperature dependence of the magnetization. This method was used for the study of influence of plastic deformation of the amorphous alloy $Fe_{73.5}Nb_{3}Cu_{1}Si_{13.5}B_{9}$ on the structural changes.
Źródło:
Acta Physica Polonica A; 2014, 126, 1; 98-99
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Plastic Deformation on Magnetic Transition in Soft Magnetic Amorphous Alloys
Autorzy:
Miškuf, J.
Csach, K.
Juríková, A.
Powiązania:
https://bibliotekanauki.pl/articles/1428973.pdf
Data publikacji:
2012-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.43.Dq
62.20.Hg
Opis:
The influence of the intensive plastic deformation on the structure of ferromagnetic amorphous alloys has been studied by means of thermoanalytical methods. It was shown that the work of plastic deformation led to the local heating in thin shear band layers and the dissipation of the energy caused structural changes in the region outside these bands. The plastic deformation influences the structure of the alloys and their structural sensitive magnetic properties.
Źródło:
Acta Physica Polonica A; 2012, 121, 5-6; 1273-1275
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Plastic Deformation on Nanocrystallization of Finemet Alloy
Autorzy:
Csach, K.
Miškuf, J.
Juríková, A.
Janák, G.
Powiązania:
https://bibliotekanauki.pl/articles/1534051.pdf
Data publikacji:
2010-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.43.Dq
62.20.Hg
Opis:
The Finemet alloy prepared by the crystallization of an amorphous precursor is a basic model material for study of magnetic nanoparticle structures. Intensive plastic deformation localized in adiabatic shear bands causes the intensive heating and structural changes in the amorphous alloy. These changes influence the magnetic properties of the amorphous precursor for the Finemet crystallization.
Źródło:
Acta Physica Polonica A; 2010, 118, 5; 820-822
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structural Relaxation of Ni-Si-B Amorphous Ribbon
Autorzy:
Juríková, A.
Csach, K.
Miškuf, J.
Ocelík, V.
Powiązania:
https://bibliotekanauki.pl/articles/1813536.pdf
Data publikacji:
2008-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.43.Dq
62.20.Hg
Opis:
The structural relaxation of the Ni-Si-B amorphous ribbon was studied by means of differential scanning calorimetry and thermomechanical analysis. It was shown that considerable length changes associated with reversible structural relaxation were revealed after a previous creep applied at higher temperatures.
Źródło:
Acta Physica Polonica A; 2008, 113, 1; 99-102
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Creep Behaviour of Co-Based Amorphous Alloys
Autorzy:
Csach, K.
Miškuf, J.
Juríková, A.
Vojtaník, P.
Powiązania:
https://bibliotekanauki.pl/articles/1813534.pdf
Data publikacji:
2008-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.43.Dq
62.20.Hg
Opis:
The detailed study of the temperature dependence of the viscosity of (Co, Fe)-(Si, B) amorphous metallic alloys up to crystallization temperatures was carried out. The kinetics of the non-equilibrium viscosity was described using Vogel-Fulcher-Tammann law below the glass transition temperature.
Źródło:
Acta Physica Polonica A; 2008, 113, 1; 91-94
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structural Changes in Deformed Soft Magnetic Ni-Based Metallic Glass
Autorzy:
Juríková, A.
Csach, K.
Miškuf, J.
Ocelík, V.
Powiązania:
https://bibliotekanauki.pl/articles/1810607.pdf
Data publikacji:
2009-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.43.Dq
62.20.Hg
Opis:
The effects of intensive plastic deformation of the soft magnetic metallic glass Ni-Si-B on the structural relaxation were examined. The enthalpy changes studied by differential scanning calorimetry revealed that the intensive plastic deformation was associated with the partial structural relaxation of the amorphous structure.
Źródło:
Acta Physica Polonica A; 2009, 115, 1; 393-395
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nanoscale Fracture Morphologies of Soft Magnetic CoFeTaB Amorphous Alloy
Autorzy:
Miškuf, J.
Csach, K.
Juríková, A.
Huráková, M.
Powiązania:
https://bibliotekanauki.pl/articles/1367300.pdf
Data publikacji:
2014-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.43.Dq
62.25.Mn
Opis:
We analyzed the failure characteristics of the bulk metallic glass $Co_{43}Fe_{20}Ta_{5.5}B_{31.5}$ (at.%) deformed by compression and by bending of the ribbons. Under the load the amorphous structure can store high elastic energy. The surface morphology of nanoscale fracture is in accord with the micromechanisms of the failure of the amorphous structure. The fracture surface consists of a smooth mirror cleavage zone and a river pattern zone with nanosized dimples, arranged in lines respecting the periodic corrugation zones, oriented perpendicular to the crack propagation direction. The presence of the failure initiation centers in the ribbon influences the dynamics of crack propagation and also the surface morphology of the fracture.
Źródło:
Acta Physica Polonica A; 2014, 126, 1; 96-97
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fragmentation of Co-Fe-Ta-B Soft Magnetic Amorphous Alloy
Autorzy:
Miškuf, J.
Csach, K.
Juríková, A.
Huráková, M.
Tabachnikova, E.
Powiązania:
https://bibliotekanauki.pl/articles/1387048.pdf
Data publikacji:
2015-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.43.Dq
62.25.Mn
Opis:
The main limitation of high-strength Co-based bulk metallic glasses for their application as structural materials is the large brittleness. Spontaneously emerging cracks in the alloy degrade the magnetic properties. We analyzed the failure characteristics of $Co_{43}Fe_{20}Ta_{5.5}B_{31.5}$ bulk soft magnetic metallic glass deformed in the compression at room temperature and the low strain rate. Under loading the amorphous structure stores high elastic energy. During the failure this energy is released and the alloy breaks into small particles or powder exhibiting a fragmentation mode.
Źródło:
Acta Physica Polonica A; 2015, 127, 2; 558-560
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic Properties of Encapsulated Magnetite in PLGA Nanospheres
Autorzy:
Koneracká, M.
Závišová, V.
Timko, M.
Kopčanský, P.
Tomašovičová, N.
Csach, K.
Powiązania:
https://bibliotekanauki.pl/articles/1813943.pdf
Data publikacji:
2008-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.20.Rv
75.50.Mm
87.83.+a
Opis:
In this study, the biocompatible magnetic fluid was encapsulated in biodegradable polymer PLGA (poly D, L/lactide-co-glycolide acid) by the nanoprecipitation method. We characterized these spheres in terms of morphology, magnetite content and magnetic properties. The results showed good encapsulation with magnetite content 22wt% and magnetization 3.4 mT. The transmission electron microscopy and scanning electron microscopy images showed that magnetic particles have almost a spherical shape with approximate size 250 nm. Infrared spectroscopy and thermogravimetric analysis measurements were used to confirm incorporation of magnetic particles into the PLGA polymer.
Źródło:
Acta Physica Polonica A; 2008, 113, 1; 595-598
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal Analysis of Magnetic Polymer Nanospheres for Drug Targeting
Autorzy:
Juríková, A.
Csach, K.
Miškuf, J.
Koneracká, M.
Závišová, V.
Kopčanský, P.
Powiązania:
https://bibliotekanauki.pl/articles/1535061.pdf
Data publikacji:
2010-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
47.65.Cb
65.80.-g
47.63.mh
Opis:
Poly(D,L-lactic-co-glycolic) acid (PLGA) polymer nanospheres loaded with different input amounts of anticancer drug taxol were prepared by the modified nanoprecipitation method. Magnetite was incorporated into the polymer nanospheres to impart them superparamagnetic properties. Thermal properties of the drug loaded magnetic polymer nanospheres were characterized using differential scanning calorimetry and thermogravimetric analysis. The solid state solubility of taxol in PLGA nanospheres and the influence of external magnetic field on their thermal stability were estimated. The investigations have revealed that the samples of dried taxol loaded magnetic PLGA nanospheres undergo mass loss at three stages during heating.
Źródło:
Acta Physica Polonica A; 2010, 118, 5; 990-992
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic Properties of $(Cu_{x}Mn_{1-x})_3[Cr(CN)_6]_2$ · $zH_2O$ Complexes
Autorzy:
Vavra, M.
Antoňák, M.
Jagličić, Z.
Mihalik, M.
Csach, K.
Zentková, M.
Powiązania:
https://bibliotekanauki.pl/articles/1535120.pdf
Data publikacji:
2010-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.30.Kz
75.30.Cr
Opis:
Magnetization measurements were performed on the $(Cu_{x}Mn_{1-x})_3[Cr(CN)_6]_2$ · $zH_2O$ molecule-based magnets where x=0.0, 0.2, 0.25, 0.3, 0.35 0.4, 0.6, 0.8 and 1.0. Both the Curie temperature and saturated magnetization at first decrease with increasing value of x reaching the minimal value of $T_{C}$ = 49.7 K and 0.17 $μ_{B}$ for x=0.2 and then increase with substitution. The pronounced hysteretic behavior between zero-field cooled and field cooled regimes was observed for all samples. Magnetization changes the sign of magnetic polarization in zero-field cooled magnetization curve at the compensation temperature $T_\text{comp}$ = 16 K for sample with x = 0.4. Our results indicate that the system behaves as mixed-ferri-ferromagnetic system.
Źródło:
Acta Physica Polonica A; 2010, 118, 5; 998-999
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Failure Behaviour of Fe- and Co-Based Amorphous Soft Magnetic Ribbons
Autorzy:
Miškuf, J.
Csach, K.
Juríková, A.
Janák, G.
Švec, T.
Konč, M.
Powiązania:
https://bibliotekanauki.pl/articles/1813535.pdf
Data publikacji:
2008-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.43.Dq
62.25.Mn
Opis:
Fractographic analysis of Co- and Fe-based high strength soft magnetic materials showed the high localization of the plastic deformation and the ductility in narrow shear bands. The estimated fracture toughness of these materials is closely associated with the scale of the local plastic zone.
Źródło:
Acta Physica Polonica A; 2008, 113, 1; 95-98
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermogravimetric Study of the Decomposition of BSA-Coated Magnetic Nanoparticles
Autorzy:
Csach, K.
Juríková, A.
Miškuf, J.
Koneracká, M.
Závišová, V.
Kubovčíková, M.
Kopčanský, P.
Powiązania:
https://bibliotekanauki.pl/articles/1429064.pdf
Data publikacji:
2012-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
47.65.Cb
65.80.-g
Opis:
Magnetic nanoparticles used in biomedicine have to be biocompatible, which can be achieved by the modification of the magnetic particle surface with an appropriate biocompatible substance. In the work protein bovine serum albumin (BSA) was chosen to modify the surface of magnetic nanoparticles. The BSA-coated magnetic nanoparticles with different input weight ratios of BSA to the magnetite $Fe_3O_4$ were prepared and thermally characterized using thermogravimetric and differential scanning calorimetric analysis. The adsorption of BSA on the magnetic nanoparticles in wide range of concentration was confirmed. The activation energies of the thermal decomposition of the complex system were estimated.
Źródło:
Acta Physica Polonica A; 2012, 121, 5-6; 1293-1295
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal Analysis of Magnetic Nanoparticles Modified with Dextran
Autorzy:
Juríková, A.
Csach, K.
Miškuf, J.
Koneracká, M.
Závišová, V.
Kubovčíková, M.
Kopčanský, P.
Powiązania:
https://bibliotekanauki.pl/articles/1429065.pdf
Data publikacji:
2012-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
47.65.Cb
65.80.-g
Opis:
In the work the thermal behaviour of the magnetic nanoparticles modified with polysaccharide dextran of different weight ratios to the magnetite $Fe_3O_4$ was investigated using thermoanalytical methods - differential scanning calorimetry and thermogravimetric analysis. The adsorption of dextran on the magnetic nanoparticles was confirmed and the influence of the dextran amount in the modified magnetic fluid on the thermal decomposition of the complex system was studied. The results showed that magnetite catalyzed the thermal decomposition of dextran, the adsorbed dextran showed lower initial decomposition temperatures in comparison with the free one.
Źródło:
Acta Physica Polonica A; 2012, 121, 5-6; 1296-1298
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structural Stability of Amorphous Alloy of Modified Finemet Type
Autorzy:
Huráková, M.
Csach, K.
Juríková, A.
Miškuf, J.
Rajňák, M.
Ďurišin, M.
Kvačkaj, T.
Powiązania:
https://bibliotekanauki.pl/articles/1387067.pdf
Data publikacji:
2015-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.43.Dq
62.20.Hg
62.20.de
Opis:
The Finemet type amorphous alloys are well known as high frequency soft magnetic materials. They have good soft magnetic properties which are characterized by low coercive force and high permeability because of the lack of crystalline anisotropy. The structural stability of the amorphous ribbon of Finemet type modified by Mn, Al and Cr prepared by melt-spinning process was studied using differential scanning calorimetry and dynamical mechanical analysis. With increase of the crystalline portion in the sample, the Curie transition is shifted to the higher temperatures. The magnetic relaxation processes at frequencies above 10⁴ Hz were detected by mass magnetic susceptibility measurement.
Źródło:
Acta Physica Polonica A; 2015, 127, 2; 564-566
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł

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