Neutron diffraction and μSR study on the antiferromagnet BaCoO 3
Neutron diffraction and μSR study on the antiferromagnet BaCoO 3
复制标题
DOI：
10.1103/physrevb.76.014402
复制
发表时间：
2007-07
影响因子：
3.7
通讯作者：
H. Nozaki;M. Janoschek;B. Roessli;J. Sugiyama;L. Keller;J. Brewer;E. Ansaldo;G. Morris;T. Takami;H. Ikuta
中科院分区：
文献类型：
--
作者：
H. Nozaki;M. Janoschek;B. Roessli;J. Sugiyama;L. Keller;J. Brewer;E. Ansaldo;G. Morris;T. Takami;H. Ikuta
用中子衍射方法研究了反铁磁六方钙钛矿的磁结构。发现AF衍射峰明显出现在Néel温度以下，其用传播矢量k=（13，13，0）索引，表明AF超晶胞是晶体学晶胞的三倍大。平行μ子自旋旋转/弛豫测量的数据允许从与中子衍射图案兼容的几种可能的自旋排列中最终选择独特的AF自旋结构。所提出的AF结构沿（110）方向沿着调制，并由下式描述，其中是在位点处的时刻和。
The magnetic structure of the antiferromagnetic (AF) hexagonal perovskitewas investigated by neutron diffraction using a powder sample in the temperature range between 60 and. It was found that AF diffraction peaks clearly appear below the Néel temperature, which are indexed with the propagation vector k=( 13 , 13 ,0), indicating that the AF super unit cell is three times larger than the crystallographic unit cell. Data from a parallel muon-spin rotation/relaxationmeasurement allowed the final selection of a unique AF spin structure from several possible spin arrangements compatible with the neutron diffraction pattern. The proposed AF structure is modulated along the (110) direction and described by, whereis the moment at thesiteandat.