Open AccessMagnetic and magnetoelastic properties of rare earth intermetallides based on TbFe2
Author(s) -
Z. S. Umkhaeva,
A.S. Ilushin,
С.А. Никитин,
T. A. Aleroeva,
N. Yu. Pankratov,
И. С. Терешина
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/905/1/012071
Subject(s) - laves phase , magnetostriction , materials science , rare earth , magnetization , crystallography , condensed matter physics , analytical chemistry (journal) , metallurgy , intermetallic , magnetic field , chemistry , physics , alloy , quantum mechanics , chromatography
The paper presents the results of the study of magnetic and magnetostrictive properties of rare-earth intermetallides based on TbFe 2 compound: Tb 1-x Zr x Fe 2 , Tb 1–x Sm x Fe 2 and (Tb 1–x Y x ) 0 . 8 Sm 0 . 2 Fe 2 . These alloys have a cubic crystal structure of the Laves phase C15 throughout the substitution region. For the system of alloys Tb 1–x Zr x Fe 2 the single-phase area is limited to the replacement parameter 0 < x < 0.2 and 0.8 < x < 1.0. The compounds of the Tb 1–x Sm x Fe 2 system were studied via X-ray dilatometry. The magnetostriction of alloys within the Tb 1–x Zr x Fe 2 and (Tb 1–x Y x ) 0 . 8 Sm 0 . 2 Fe 2 systems was studied in the temperature range of 80-320 K in magnetic fields of up to 17 kOe via a strain-gauge method. It was found that each system has the phenomenon of sign inversion of magnetostriction constants: in the system Tb 1–x Zr x Fe 2 in the area of replacement parameter x = 0.8, in Tb 1–x Sm x Fe 2 - in the area x = 0.45, and in the system of alloys (Tb 1–x Y x ) 08 Sm 02 Fe 2 at x = 0.6. It was demonstrated that magnetic compensation and spin reorientation phenomena occur in these systems. The obtained results are discussed in the model of alloys with competing exchange interactions.