Antiferromagnetism in a Technetium Oxide. Structure of CaTcO3
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- 作者：Maxim Avdeev ; Gordon J. Thorogood ; Melody L. Carter ; Brendan J. Kennedy ; Jimmy Ting ; David J. Singh ; Kia S. Wallwork
- 刊名：Journal of the American Chemical Society
- 出版年：2011
- 出版时间：February 16, 2011
- 年：2011
- 卷：133
- 期：6
- 页码：1654-1657
- 全文大小：744K
- 年卷期：v.133,no.6(February 16, 2011)
- ISSN：1520-5126
文摘
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 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.