Partially disordered state with short-range spin correlation in S=5/2 classical triangular antiferromagnet Ag2FeO2
Partially disordered state with short-range spin correlation in S=5/2 classical triangular antiferromagnet Ag2FeO2
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S=5/2 经典三角反铁磁体 Ag2FeO2 中具有短程自旋关联的部分无序态
DOI：
10.1103/physrevresearch.2.043211
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发表时间：
2020
影响因子：
4.2
通讯作者：
Isobe M.
中科院分区：
文献类型：
--
作者：
Yoshida H. K.;Matsuda M.;Stone M. B.;dela Cruz C. R.;Furubayashi T.;Onoda M.;Takayama-Muromachi E.;Isobe M.
在高压下合成了一种三角晶格反铁磁体。它的磁性研究方面的电阻率，磁化率，热容量，粉末中子散射，和穆斯堡尔谱。的磁状态的变化连续通过一个二级相变在K和交叉在K。一个部分无序（PD）状态出现在下面，其中自旋是有序的，双自旋是波动的，这种状态至少持续到5 K。自旋相关长度在开始增长，但在以下仍然很短（π）。这种奇异的磁性与经典反铁磁三角晶格中的强阻挫有关。
A triangular-lattice antiferromagnet ofwas synthesized under high pressure. Its magnetism was studied in terms of electrical resistivity, magnetic susceptibility, heat capacity, powder neutron scattering, and Mössbauer spectroscopy. The magnetic state ofchanges successively through a second-order phase transition atK and a crossover atK. A partially disordered (PD) state appears below, in whichspins are ordered and the remainingspins fluctuate, which state persists at least down to 5 K. The spin correlation length starts to grow at; however, it remains very short (Å) below. This exotic magnetism is concerned with strong frustration in the classic antiferromagnetic triangular lattice.