Open AccessInvestigations of phase stability of R3(Fe1-xCox)29-yCry(R=Gd,Sm) compounds
Author(s) -
Wenquan Wang,
Feng Su,
刘春杰 LIU Chun-jie,
Wang Xue-feng,
Yan Yu,
Hanmin Jin
Publication year - 2003
Publication title -
acta physica sinica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.52.2508
Subject(s) - materials science , magnetocrystalline anisotropy , phase (matter) , atomic radius , analytical chemistry (journal) , lattice constant , radius , diffraction , anisotropy , lattice (music) , crystallography , magnetic anisotropy , magnetization , chemistry , magnetic field , physics , optics , organic chemistry , chromatography , quantum mechanics , computer security , computer science , acoustics
After the Gd3(Fe1-xCox)29-yCry compound was formed, Sm3(Fe1-xCox)29 -yCry compounds were also successfully fabricated. Phase stability of R3(Fe1-xCox)29-yCr y(R=Gd,Sm) compounds was invest igated by x-ray diffraction and magnetic measurements. Atomic radius theory was employed to interpret why the 3∶29 compounds with high Co component had to cont ain more stabilizing elements. Less stabilizing elements are needed for those wi th larger atomic radius. However,a large atom of a stabilizing element augments the lattice parameter of the compound, which is disadvantageous to the stability of the 3∶29 phase. By studying the phase stability of R3(Fe1-x Cox)29-yCry(R=Gd,Sm) compounds, we have fabricated the Gd3(Fe1-xCox )29-yCry(0.4≤x≤1.0; 4.0≤y≤6.5) and Sm3(Fe1-xCox)29-y Cry(0.4≤x≤1.0; 4.5≤y≤7.5)compounds with room-temperature uniaxial magnetocrystalline anisotropy.
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