Lattice Distortion Coupled with Magnetic Ordering in a Triangular Lattice Antiferromagnet CuCrO2
Lattice Distortion Coupled with Magnetic Ordering in a Triangular Lattice Antiferromagnet CuCrO2
复制标题
DOI：
10.1143/jpsj.78.113710
复制
发表时间：
2009-11
影响因子：
1.7
通讯作者：
K. Kimura;T. Otani;H. Nakamura;Y. Wakabayashi;T. Kimura
中科院分区：
文献类型：
--
作者：
K. Kimura;T. Otani;H. Nakamura;Y. Wakabayashi;T. Kimura
我们研究了三角晶格反铁磁体 CuCrO 2 的磁致伸缩特性，通过 X 射线衍射和应变仪测量显示出不相称的固有螺旋旋转顺序。在磁排序时发现三角晶格平面的变形导致晶体学对称性降低，这表明该系统中存在很强的自旋晶格耦合。由此产生的多个结构域可以通过磁场冷却程序成功排列。我们讨论了CuCrO 2 中晶格畸变与不可通约性之间的关系。
We investigated magnetostrictive properties of a triangular lattice antiferromagnet CuCrO 2 showing an incommensurate proper-screw spin order by means of x-ray diffraction and strain gauge measurements. A deformation of the triangular lattice plane leading to a lowered crystallographic symmetry was found upon the magnetic ordering, which demonstrates a strong spin–lattice coupling in this system. The resultant multiple structural domains can be successfully arranged by magnetic field cooling procedures. We discuss the relationship between the lattice distortion and incommensurability in CuCrO 2 .