ON THE CRYSTAL-STRUCTURE AND MAGNETIC-PROPERTIES OF MNNIGE
ON THE CRYSTAL-STRUCTURE AND MAGNETIC-PROPERTIES OF MNNIGE
复制标题
DOI：
10.1016/0304-8853(85)90065-4
复制
发表时间：
1985-01-01
影响因子：
2.7
通讯作者：
ANDRESEN, AF
中科院分区：
文献类型：
--
作者：
FJELLVAG, H;ANDRESEN, AF
用X射线和中子衍射法研究了MnNiGe的结构和磁性。室温下为正交TiNiSi型结构，在528K以上加热后转变为六方有序Ni2In型结构。在356K以下，发现了传播矢量为τ=0.228×2πa∗的螺旋磁结构。在260K时，在传播矢量不变的情况下，卫星反射强度的突变归因于双螺旋结构的形成。这些调查结果与以前的测量结果之间的差异归因于样品制备的差异。
MnNiGe has been studied by X-ray and neutron diffraction to elucidate its structural and magnetic properties. The structure at room temperature is of the orthorhombic TiNiSi type, but transforms on heating above 528 K to the hexagonal ordered Ni2In type. Below 356 K a spiral magnetic structure with propagation vector τ = 0.228 × 2πa∗is found. At 260 K an abrupt change in the intensity of the satellite reflections with no change in the propagation vector is attributed to the formation of a double spiral structure. Discrepancies between these findings and the results of previous measurements are attributed to differences in sample preparation.