Crystal structure and magnetic ordering of novel perovskite-related barium osmate Ba_(11)Os_4O_(24)

Makoto Wakeshima; Yukio Hinatsu

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Crystal structure and magnetic ordering of novel perovskite-related barium osmate Ba_(11)Os_4O_(24)

机译：钙钛矿相关钡酸钡Ba_（11）Os_4O_（24）的晶体结构和磁有序性

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摘要

The crystal structure and magnetic properties of new barium osmate Ba_(11)Os_4O_(24) are investigated. This compound crystallizes in a cation-deficient double perovskite-related structure (space group I4_1/a; Z=4), which is isostructural with the strontium rhenate, Sr_(11)Re_4O_(24). This compound shows semiconductive behavior with thermal activation. A weak ferromagnetic transition has been found at 7.5 K through its magnetic susceptibility measurements. At 6.8 K, a λ-type specific heat anomaly has been observed.

机译：研究了新型钡酸钡Ba_（11）Os_4O_（24）的晶体结构和磁性。该化合物以阳离子不足的双钙钛矿相关结构（空间群I4_1 / a； Z = 4）结晶，该结构与rh酸锶Sr_（11）Re_4O_（24）等价。该化合物显示出具有热活化的半导体行为。通过磁化率测量，在7.5 K处发现了弱的铁磁跃迁。在6.8 K处，观察到λ型比热异常。

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来源
《Solid State Communications》 |2005年第10期|p.499-503|共5页
作者
Makoto Wakeshima; Yukio Hinatsu;
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作者单位

Division of Chemistry, Graduate School of Science, Hokkaido University, Kita10-Nishi8, Kita-ku, Sapporo 060-0810, Japan;

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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
A. Barium osmate; C. Cation-deficient double perovskite-related structure; C. Crystal structure; D. Weak ferromagnetic ordering;

机译：A.骨酸钡;C。缺乏阳离子的钙钛矿相关结构;C．晶体结构;D。铁磁有序;

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Crystal structure and magnetic ordering of novel perovskite-related barium osmate Ba_(11)Os_4O_(24)

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