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Wyszukujesz frazę "Werner, E." wg kryterium: Autor


Wyświetlanie 1-6 z 6
Tytuł:
Effect of Annealing on the Crystal Structure and Microstructure of Pr Doped $ZrO_{2}-Y_{2}O_{3}$ Nanocrystals
Autorzy:
Werner-Malento, E.
Paszkowicz, W.
Fidelus, J.
Godlewski, M.
Yatsunenko, S.
Powiązania:
https://bibliotekanauki.pl/articles/1550117.pdf
Data publikacji:
2010-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.46.-w
61.66.Fn
81.40.-z
Opis:
Rare-earth doped nanocrystalline yttria-stabilized zirconia (YSZ, $ZrO_{2}-Y_{2}O_{3}$) is, recently, a subject of studies because of its luminescent properties. The luminescence may be strongly influenced by the crystal structure and microstructure of the material. In this work, the X-ray diffraction study for Pr doped YSZ nanocrystals is presented. The phase composition dependence on the $Y_{2}O_{3}$ content and on heat treatment conditions is quantitatively determined using the Rietveld method and the similarities and differences between the present data for doped samples and earlier reported data for undoped material are discussed. A formation of high symmetry phases (cubic and tetragonal) is observed for high yttria content in agreement with general tendencies observed in literature for undoped samples.
Źródło:
Acta Physica Polonica A; 2010, 117, 1; 91-97
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Equation of State of Zircon-Type $TbVO_{4}$
Autorzy:
Minikayev, R.
Paszkowicz, W.
Werner-Malento, E.
Lathe, C.
Dąbkowska, H.
Powiązania:
https://bibliotekanauki.pl/articles/1538929.pdf
Data publikacji:
2010-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.05.cp
62.50.-p
61.50.Ks
64.30.Jk
Opis:
High-pressure energy-dispersive X-ray diffraction study were performed on zircon-type phase of terbium orthovanadate, $TbVO_{4}$, in the pressure range up to 7 GPa. For analysis of the collected diffraction spectra, Le Bail refinements were performed. The values of bulk modulus and its pressure derivative ($B_0$ = 121 GPa, B' = 4.1) were obtained from fitting of the second-order Birch-Murnaghan equation of state. The equation of state derived for $TbVO_{4}$, is compared with earlier data based on the Raman spectroscopic studies and with data of several other rare-earth orthovanadates.
Źródło:
Acta Physica Polonica A; 2010, 117, 2; 319-322
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ion Implantation and Transient Melting: A New Approach to Formation of Superconducting MgB$\text{}_{2}$ Phases
Autorzy:
Piekoszewski, J.
Kempiński, W.
Stankowski, J.
Prokert, F.
Richter, E.
Stanisławski, J.
Werner, Z.
Szymczyk, W.
Powiązania:
https://bibliotekanauki.pl/articles/2041609.pdf
Data publikacji:
2004-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.70.-b
74.78.-w
Opis:
An attempt to synthesize superconducting MgB$\text{}_{2}$ inter-metallic compound from the liquid state is presented. The process consists of two steps. In the first one, boron ions are implanted into a magnesium substrate. In the second one, the near-surface region of such system is melted by short, intense hydrogen plasma pulses without necessity of annealing in Mg vapor. A magnetically modulated microwave absorption method was used to detect superconducting regions in the obtained MgB$\text{}_{2}$ layer. Percolation between nano-regions (islands) of MgB$\text{}_{2}$ has not been observed. However, a superconducting state of the insulated islands has been experimentally proven with transition temperatures T$\text{}_{C}$ as high as 31 K.
Źródło:
Acta Physica Polonica A; 2004, 106, 6; 861-868
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multifunctional $La_{0.7}Sr_{0.3}MnO_3-YBa_2Cu_3O_7$ Heterostructures
Autorzy:
Przyslupski, P.
Dybko, K.
Tsarou, A.
Werner-Malento, K.
Sawicki, M.
Laviano, F.
Gozzellino, L.
Mezzetti, E.
Powiązania:
https://bibliotekanauki.pl/articles/1812263.pdf
Data publikacji:
2008-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.25.Ha
74.78.Db
74.72.Bk
75.70.Cn
Opis:
Complex perovskite oxides exhibit a rich spectrum of functional responses such as: superconductivity, magnetism etc. Combination of different oxides in multilayered structures increases the number of physical responses. Heterogeneous oxide structures represent a new class of nanostructures. They consist of ferromagnetic $La_{0.67}Sr_{0.33}MnO_3$ (F-LSMO) manganite and superconducting $YBa_2Cu_3O_7$ (Sc-YBCO) cuprate. The interaction between the two order parameters gives rise to new physical effects. In this review we will discuss various physical effects obtained in the bilayer and trilayer heterostructures. For example, the LSMO/YBCO bilayer structures are used to study the mechanism of magnetic pinning. The other possibility is the fabrication of spin valve-like structures LSMO/YBCO/LSMO. The spin dependent transport in trilayer structure was studied taking into account crossed Andreev reflection and electron co-tunneling processes.
Źródło:
Acta Physica Polonica A; 2008, 114, 1; 15-22
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Superconductivity in Indium Diffused GaAs
Autorzy:
Baranowski, J. M.
Wójcik, P.
Palczewska, M.
Jabłoński, R.
Weber, E. R.
Yau, W. P.
Sohn, H.
Werner, P.
Powiązania:
https://bibliotekanauki.pl/articles/1921582.pdf
Data publikacji:
1992-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.70.Mq
76.20.+q
Opis:
Superconductivity of indium diffused GaAs was investigated. The superconductivity in these samples was identified by the magnetic susceptibility and the characteristic field modulated microwave absorption. The static magnetic susceptibility was measured from 40 K down to 2.5 K. The result shows two distinctive diamagnetic contributions within 7 K-2.5 K range. These diamagnetic contributions were correlated with the excess of In and Ga metal in GaAs.
Źródło:
Acta Physica Polonica A; 1992, 82, 4; 670-673
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Formation of Superconducting Regions of MgB_2 by Implantation of Boron Ions into Magnesium Substrate
Autorzy:
Trybuła, Z.
Kempiński, W.
Andrzejewski, B.
Piekara-Sady, L.
Kaszyński, J.
Piekoszewski, J.
Werner, Z.
Richter, E.
Prokert, F.
Stanisławski, J.
Barlak, M.
Powiązania:
https://bibliotekanauki.pl/articles/2043433.pdf
Data publikacji:
2005-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.70.-b
74.78.-w
Opis:
The results of investigation of the MgB$\text{}_{2}$ inter-metallic compound with the use of boron ions implantation and plasma pulse treatment are presented. The samples were characterized by: four-probe electric conductivity measurements, magnetically modulated microwave absorption, and magnetic measurements. For hydrogen and argon pulsed plasma treatment the samples with T$\text{}_{c}$ ranging from 10 K to 32 K were obtained. The superconducting phase does not form a continuous layer since the resistivity does not fall down to zero. Apparently, separate islands of superconducting phase are connected through metallic Mg paths. All samples are still below the percolation threshold.
Źródło:
Acta Physica Polonica A; 2005, 108, 1; 165-170
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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