Magnetism of the A-site ordered perovskites CaCu3Cr4O12 and LaCu3Cr4O12
Magnetism of the A-site ordered perovskites CaCu3Cr4O12 and LaCu3Cr4O12
复制标题
A位有序钙钛矿CaCu3Cr4O12和LaCu3Cr4O12的磁性
DOI：
10.1103/physrevb.97.024416
复制
发表时间：
2018
影响因子：
3.7
通讯作者：
Mansson Martin
中科院分区：
文献类型：
--
作者：
Sugiyama Jun;Nozaki Hiroshi;Umegaki Izumi;Miwa Kazutoshi;Higemoto Wataru;Ansaldo Eduardo J.;Brewer Jess H.;Sakurai Hiroya;Isobe Masahiko;Takagi Hidenori;Mansson Martin
用μ子自旋旋转和弛豫（）测量方法研究了格位有序的铬钙钛矿及其固溶体系统的微观磁性，μ子自旋旋转和弛豫（）测量值低至2K。的，揭示了静态反铁磁（AF）秩序的形成低于122 K（），虽然磁化测量显示了一个非常小的变化。用第一性原理计算预测的μ介子位置的内部磁场分析，确定了作为基态的类AF序。ForwithK，也支持的a-型AF有序状态，这是最近提出的基于中子衍射测量的存在。然而，发现有序Cr矩在10 K左右改变方向。对于，在2K下，两者都单调增加。
The microscopic magnetic nature of the-site ordered chromium perovskitesandand their solid-solution system,, with, 0.4, and 0.8, has been studied with muon spin rotation and relaxation () measurements down to 2 K using a powder sample. For,revealed the formation of static antiferromagnetic (AF) order below 122 K (), although magnetization measurements showed a very small change at. Analyses of the internal magnetic fieldat the muon sites, predicted with first-principles calculations, suggested-type AF order as a ground state. ForwithK,also supported the presence of a-type AF ordered state, which was recently proposed based on neutron diffraction measurements. However, the ordered Cr moments were found to change the direction at around 10 K. For, bothandat 2 K increase monotonically with.