Open AccessX-ray studies of multicomponent Sm0.2(Tb,Y)0.8Fe2 alloys
Author(s) -
Г. А. Политова,
P. Yu. Vanina,
О. А. Алексеева,
A. V. Filimonov,
T. A. Aleroeva,
N. Yu. Pankratov,
Г. С. Бурханов,
A.S. Ilushin
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1758/1/012030
Subject(s) - arc melting , materials science , magnetic moment , yttrium , atmospheric temperature range , condensed matter physics , diffraction , thermal expansion , phase (matter) , analytical chemistry (journal) , oxide , chemistry , thermodynamics , metallurgy , physics , microstructure , optics , organic chemistry , chromatography
The multicomponent Sm 0.2 (Tb,Y) 0.8 Fe 2 system was obtained by the arc melting method, in which atoms with a high magnetic moment of terbium are replaced by yttrium atoms that do not carry a noticeable magnetic moment. In this system, varying not only the composition, but also external factors (temperature, magnetic field, etc.), it is possible to influence competing exchange interactions and observe a number of unique phenomena, such as, for example, the phenomenon of magnetic compensation. Using the method of high-temperature and low-temperature X-ray diffraction, the phase composition and atomic-crystalline structure of the Sm 0.2 (Tb 1-x Y x ) 0.8 Fe 2 alloys (x = 0, 0.2, 0.4, 0.6, 0.8, 1) were studied. The temperature dependences of the unit cell parameters were obtained in a wide temperature range from 80 to 700 K. Thermal expansion was investigated by strain-gauge method. The temperatures of magnetostructural phase transitions are determined, and a magnetic phase diagram is constructed.