Antiferromagnetism in a Technetium Oxide. Structure of CaTcO3

被引：44

作者：

Avdeev, Maxim ^{[2
]}

Thorogood, Gordon J. ^{[3
]}

Carter, Melody L. ^{[3
]}

Kennedy, Brendan J. ^{[1
]}

Ting, Jimmy ^{[1
]}

Singh, David J. ^{[4
]}

Wallwork, Kia S. ^{[5
]}

机构：

[1] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia

[2] Australian Nucl Sci & Technol Org, Bragg Inst, Menai, NSW 2234, Australia

[3] Australian Nucl Sci & Technol Org, Inst Mat Engn, Menai, NSW 2234, Australia

[4] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

[5] Australian Synchrotron, Clayton, Vic 3168, Australia

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2011年 / 133卷 / 06期

基金：

澳大利亚研究理事会;

关键词：

NEUTRON POWDER DIFFRACTION; SINGLE-CRYSTAL; PEROVSKITE; CHEMISTRY;

D O I：

10.1021/ja109431t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The technetium perovskite CaTcO3 has been synthesized. Combining synchrotron X-ray and neutron diffraction, we found that CaTcO3 is an antiferromagnetic with a surprisingly high Neel temperature of similar to 800 K. The transition to the magnetic state does not involve a structural change, but there is obvious magnetostriction. Electronic structure calculations confirm the experimental results.

引用

页码：1654 / 1657

页数：4

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