Open AccessFORMATION AND MAGNETIC PROPERTIES OF Sm2Fe17-xMxC1.5(M=Ga,Si) COMPOUNDS
Author(s) -
Baogen Shen,
Kong Lin-Shu,
Fangwei Wang,
Lei Cao,
Zhan Wang
Publication year - 1994
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.43.846
Subject(s) - coercivity , materials science , curie temperature , alloy , arc melting , carbide , anisotropy , tetragonal crystal system , analytical chemistry (journal) , magnetic anisotropy , phase (matter) , condensed matter physics , crystallography , nuclear magnetic resonance , magnetic field , crystal structure , magnetization , metallurgy , ferromagnetism , chemistry , physics , organic chemistry , chromatography , quantum mechanics
Formation, structure and magnetic properties of 217-xx1.5 compounds prepared by arc-melting were studied. The 217-xGax1.5(3≤x≤6) carbides crystallize in the rhombohedral 217-type structure and the single-phase compund of 217-xSix1.5 can only be obtained as x is 2. It is found that the Curie temperature of 217-xGax1.5 compounds decreases monotonically with increasing Ga concentration x from 633K for x=2 to 351K for x=6and the Tc of 215Si21.5 compound is 578K. All compounds studied in this work exhibit an easy c-axis anisotropy at room temperature. The anisotropy field of 214Ga31.5 and 215Si21.5 compounds is found td be 90 and 115 kOe, respectively. A room-temperature coercivity of 16 kOe is obtained in rapidly quenched 215Si21.5 alloy prepared at。speed of 25 m/s.