MAGNETIC PROPERTIES OF BALL MILLED FexCu1-x (x=0.4, 0.5) ALLOY
Li Yu-zhi (李玉芝)a, Lin lei (林磊)a, Wang Wang-chen (王汪陈)b, Xiong Cao-shui (熊曹水)b, Shen Bao-gen (沈保根)c
a Structure Research Laboratory, University of Science and Technology of China, Hefei 230026, China b Department of physics, University of Science and Technology of China, Hefei 230026, China; c Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;
Abstract The samples Fe0.4Cu0.6 and Fe0.5Cu0.5 ball milled for 50 h are investigated by X-ray diffraction, M$\ddot{\rm o}$ssbauer spectra, as well as magnetic measurement. The experiments show that the structure of the samples is fcc, with lattice constant 0.361 nm and there are fcc Fe-rich phase and fcc Cu-rich phase in the samples. Most of Fe atoms (91%) are in the fcc Fe-rich phase, which is a ferromagnetic phase. The M-H curve at 1.5 K shows the saturation magnetization of the samples are 80.5 emu/g and 101.6 emu/g for Fe0.4Cu0.6 and Fe0.5Cu0.5 respectively. The average magnetic moment of Fe atoms is deduced to be 2.40 $\mu_{\rm B}$. Compared with theoretical predication, the Fe atoms in the fcc phase are in high spin state.
Received: 19 October 1999
Accepted manuscript online:
PACS:
75.30.Cr
(Saturation moments and magnetic susceptibilities)
Li Yu-zhi (李玉芝), Lin lei (林磊), Wang Wang-chen (王汪陈), Xiong Cao-shui (熊曹水), Shen Bao-gen (沈保根) MAGNETIC PROPERTIES OF BALL MILLED FexCu1-x (x=0.4, 0.5) ALLOY 2000 Chinese Physics 9 304
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