Open AccessStructures and Magnetic Properties of 3:29-Type Gd-Fe-Co-Cr Compounds
Author(s) -
Dong Yang,
Jianli Wang,
Ning Tang,
Shen Yu-Ping,
Yang Fu
Publication year - 1999
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.48.80
Subject(s) - magnetocrystalline anisotropy , curie temperature , materials science , magnetization , condensed matter physics , anisotropy , basal plane , magnetic anisotropy , saturation (graph theory) , curie–weiss law , curie , nuclear magnetic resonance , crystallography , ferromagnetism , chemistry , magnetic field , physics , mathematics , quantum mechanics , combinatorics
The structural and magnetic properties of synthetic Gd3(Fe1-xCox)25Cr4(0≤x≤0.6) and Gd3Fe29-yCry(3.5≤y≤5.0) compounds have been investigated. The structures of all the compounds are found to belong to the A2/m space group. Increase of Cr content leads to decreasing Curie temperature, decreasing saturation magnetization and decreasing anisotropy. Substitution of Co for Fe leads to a clear contraction of the unit-cell volume, but the increase of Curie temperature. Composition dependence of saturation magnetization at 5K reaches a maximum around x=0.3. It is noteworthy that substitution of Co for Fe results in a significant change of magnetocrystalline anisotropy of the Co sublattice, and changes of the easy magnetization direction of Gd3(Fe1-xCox)25Cr4 compounds from basal plane to easy axis.