Magnetic and Mssbauer Studies of Metamagnetic Fe3Ga4
Magnetic and Mssbauer Studies of Metamagnetic Fe3Ga4
复制标题
变磁性 Fe3Ga4 的磁学和穆斯堡尔研究
DOI:
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发表时间:
1986
期刊:
影响因子:
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通讯作者:
K. Adachi
中科院分区:
文献类型:
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作者:
N. Kawamiya;K. Adachi
Magnetization of Fe 3 Ga 4 is measured as a function of magnetic field and temperature. In weak fields, Fe 3 Ga 4 is an antiferromagnetic with a Neel temperature of 392 K. In strong fields, it shows a metamagnetic transition and gives a saturation moment of 1.27 µ B per Fe atom at 4.2 K and 70 kOe. Its Mossbauer spectrum is analyzed into four sextets, assigned to the crystal site Fe(1), Fe(2), Fe(3) and fe(4): each site has, respectively, an internal field of 225, 190, 150 and 171 kOe at 80 K. The magnetic phase diagram of Fe 3 Ga 4 involving the metamagnetism can be explained by the Moriya-Usami theory.