Magnetic anisotropy and geometrical frustration in the Ising spin-chain system Sr_5Rh_4O_(12)

G. Cao; S. Parkin; P. Schlottmann

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Magnetic anisotropy and geometrical frustration in the Ising spin-chain system Sr_5Rh_4O_(12)

机译：Ising自旋链系统Sr_5Rh_4O_（12）中的磁各向异性和几何受挫

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摘要

A structural and thermodynamic study of the newly synthesized single crystal Sr_5Rh_4O_(12) is reported. Sr_5Rh_4O_(12) consists of a triangular lattice of spin chains running along the c-axis. It is antiferromagnetically ordered below 23 K with the intrachain and interchain coupling being ferromagnetic (FM) and antiferromagnetic (AFM), respectively. There is strong evidence for an Ising character in the interaction and geometrical frustration that causes incomplete long-range AFM order. The isothermal magnetization exhibits two step-like transitions leading to a ferrimagnetic state at 2.4 T and a FM state at 4.8 T, respectively. Sr_5Rh_4O_(12) is a unique frustrated spin-chain system ever found in 4d and 5d based materials without a presence of an incomplete 3d-electron shell.

机译：报道了新合成的单晶Sr_5Rh_4O_（12）的结构和热力学研究。 Sr_5Rh_4O_（12）由沿c轴延伸的自旋链的三角形晶格组成。它在23 K以下以反铁磁有序排列，链内和链间耦合分别为铁磁（FM）和反铁磁（AFM）。有充分的证据表明，在相互作用和几何受挫中，伊辛特性会导致不完整的远程AFM有序。等温磁化强度呈现两个阶梯状跃迁，分别导致2.4 T的亚铁磁状态和4.8 T的FM状态。 Sr_5Rh_4O_（12）是一种独特的受挫自旋链系统，曾经在基于4d和5d的材料中发现，而没有不完整的3d电子壳。

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来源
《Solid State Communications》 |2007年第7期|p.369-373|共5页
作者
G. Cao; S. Parkin; P. Schlottmann;
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作者单位

Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506, USA;

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原文格式 PDF
正文语种 eng
中图分类固体物理学;
关键词
D. Geometrical frustration; D. Ising spin chain; D. Partial antiferromagnetism;

机译：D.几何挫折感;D。伊辛旋转链;D.部分反铁磁性;

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机译：Ising自旋链中的磁各向异性和几何挫折系统sr5Rh4O12

Magnetic anisotropy and geometrical frustration in the Ising spin-chain system Sr_5Rh_4O_(12)

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