Autor: Średniawa, B. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A.C. Susceptibility Measurements under High Pressure up to 2.0 GPa
Autorzy:: Średniawa, B.
Duraj, R.
Zach, R.
Guillot, M.
Powiązania:: https://bibliotekanauki.pl/articles/2013734.pdf
Data publikacji:: 2000-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.50.Cc
07.55.Jg
71.20.Lp
Opis:: A newly developed pressure setup for a.c. susceptibility measurements in the pressure range up to 2.0 GPa is presented; the temperature domain extends from 77 to 450 K. The steel pressure chamber contains the sample located at the center of a set of three compensated pick-up coils and the pressure and temperature sensors. Either alcohol or extraction naphtha is used as the liquid pressure transmitting medium. The (P,T) magnetic phase diagram of (Fe$\text{}_{0.975}$Ni$\text{}_{0.025}$)$\text{}_{2}$P system in the pressure range up to 2.0 GPa is reported.
Źródło:: Acta Physica Polonica A; 2000, 97, 5; 917-920
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Magnetoelastic Phase Transitions and Critical Behaviour of (Fe$\text{}_{1-x}$Ni$\text{}_{x}$)$\text{}_{2}$P System
Autorzy:: Średniawa, B.
Duraj, R.
Pacyna, A.
Bombik, A.
Zach, R.
Bacmann, M.
Fruchart, D.
Nizioł, S.
Fornal, P.
Stanek, J.
Powiązania:: https://bibliotekanauki.pl/articles/2013735.pdf
Data publikacji:: 2000-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.50.Cc
71.20.Lp
Opis:: This report focuses on magnetoelastic properties and critical behaviour of (Fe$\text{}_{1-x}$Ni$\text{}_{x}$)$\text{}_{2}$P system. For low Ni content (x=0.01) an isolated critical point was found. Analysis of this critical behaviour in the frame of molecular field approximation was carried out. Moreover, thermal variations of the lattice parameters, as measured by X-ray diffraction techniques, were studied. The (P,T) phase diagrams obtained for several Ni contents show the evidence that the Curie temperature decreases with pressure. The Mössbauer spectra collected for x = 0.025, 0.1, 0.2, 0.25 at different temperatures are also analysed. The existence of two nonequivalent crystallographic sites occupied by iron atoms as well as local magnetic structure is discussed.
Źródło:: Acta Physica Polonica A; 2000, 97, 5; 921-925
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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