Chiral weak ferromagnets formed in one-dimensional organic-inorganic hybrid manganese chloride hydrates
Chiral weak ferromagnets formed in one-dimensional organic-inorganic hybrid manganese chloride hydrates
复制标题
一维有机-无机杂化氯化锰水合物中形成的手性弱铁磁体
DOI：
10.1039/d2dt02928f
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发表时间：
2022
影响因子：
4
通讯作者：
Miyasaka Hitoshi
中科院分区：
文献类型：
--
作者：
Taniguchi Kouji;Huang Po-Jung;Kimura Shojiro;Miyasaka Hitoshi
手性有机阳离子(S)-和(R)-β-甲基苯乙基铵(=(S)-和(R)-Mpa+)，[(S)/(R)-Mpa]2[MnCl4(H2O)]在一维氯化锰水合物有机-无机杂化体系中制备了手性弱铁磁体。在3.2K以下发现的弱铁磁相可归因于手性引入系统中空间反转对称性破缺引起的Dzyaloshinskii-Moriya相互作用引起的自旋倾斜反铁磁态。这是在具有过渡金属卤化物水合物共角结构的变形钙钛矿衍生物的自旋链中发现的第一个手性弱铁磁体。
Chiral weak ferromagnets were developed in organic–inorganic hybrid systems of one-dimensional manganese(II) chloride hydrate with chiral organic cations of (S)- and (R)-β-methylphenethylammonium (= (S)- and (R)-MPA+), [(S)/(R)-MPA]2[MnCl4(H2O)]. The weak ferromagnetic phase found below 3.2 K could be attributed to a spin canting antiferromagnetic state induced by Dzyaloshinskii–Moriya interactions owing to spatial inversion symmetry breaking in chirality introduced systems. This is the first chiral weak ferromagnet found in a spin chain of deformed perovskite derivatives with a corner-sharing structure of transition metal halide hydrates.