MAGNETIC-PROPERTIES OF FE2P SINGLE-CRYSTAL
MAGNETIC-PROPERTIES OF FE2P SINGLE-CRYSTAL
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DOI：
10.1143/jpsj.43.41
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发表时间：
1977-01-01
影响因子：
1.7
通讯作者：
OKAMOTO, T
中科院分区：
文献类型：
--
作者：
FUJII, H;HOKABE, T;OKAMOTO, T
通过沿主晶轴的磁化率、磁化率、热膨胀率和电阻率测量，研究了六方fe2p单晶的磁性能。结果表明，该化合物的饱和磁化强度和居里温度分别为2.94 μ B和208.6 K，各向异性常数K 1在4.2 K时为2.32× 10.7 erg/ cm3，明显大于3d跃迁化合物。在居里温度下，热膨胀和电阻率表现出不连续的变化，表明铁磷的铁磁性向顺磁性转变伴随着磁弹性效应的一阶转变。根据Bean和Rodbell理论，讨论了热膨胀测量得到的交换约束。
The magnetic properties of hexagonal Fe 2 P single crystal are studied by the measurements of magnetization, susceptibility, thermal expansion and electrical resistivity along the principal crystallographic axes. It is found that the saturation magnetization per molecule and the Curie temperature are 2.94 μ B and 208.6 K, respectively, and the anisotropy constant K 1 is 2.32× 10 7 erg/cm 3 at 4.2 K, which is considerably larger than the values in 3d-transition compounds. The thermal expansion and the electrical resistivity show discontinuous changes at the Curie temperature indicating that the ferromagnetic to paramagnetic transition of Fe 2 P is accompanied by the first-order transition due to magnetoelastic effects. The exchange striction obtained from the measurement of thermal expansion is discussed on the basis of the theory of Bean and Rodbell.