X-ray and Magnetic Studies of the Manganese-Germanium System
X-ray and Magnetic Studies of the Manganese-Germanium System
复制标题
锰-锗系统的 X 射线和磁学研究
DOI：
10.1143/jpsj.16.1995
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发表时间：
1961
影响因子：
1.7
通讯作者：
T. Ohoyama
中科院分区：
文献类型：
--
作者：
T. Ohoyama
Mn-Ge系在21.8 ~ 35.7at.%范围内的组成用X射线粉末衍射仪对Ge进行了分析，并对各相的磁性能进行了研究。在22 ~ 23.5at.%左右存在高温相和低温相Ge（e，e1），约28 at. Ge（Ⅲ）和28.6原子%的低温相Ge（κ）-成立。κ相在居里点710°K以下为亚铁磁性，在395°K时自发磁化反转（N型）。其他相表现出相当异常的磁性。在晶格参数a = 7.186A和c = 13.08A的六方结构下，可以对α相的德拜图进行索引。
The constitution of Mn–Ge system within the range of composition 21.8∼35.7 at.% Ge was examined X-ray powder diffraction, and magnetic properties of each phase were studied. The existence of four phases–high- and low-temperature phases at about 22∼23.5 at.% Ge ( e , e 1 ), a high temperature phase around 28 at.% Ge (ζ) and a low-temperature phase at 28.6 at.% Ge (κ)–was established. The κ phase is ferrimagnetic below the Curie point 710°K, and the spontaneous magnetization is reversed at 395°K (N type). The other phases exhibit quite anomalous magnetism. The Debye diagram for ζ phase could be indexed assuming a hexagonal structure with lattice parameters a =7.18 6 A and c =13.0 8 A.