1. Antiferromagnetism in a Technetium Oxide. Structure of CaTcO3.
- Author
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Avdeev, Maxim, Thorogood, Gordon J., Carter, Melody L., Kennedy, Brendan J., Ting, Jimmy, Singh, David J., and Wallwork, Kia S.
- Subjects
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ANTIFERROMAGNETISM , *OXIDES , *PEROVSKITE , *X-rays , *NEUTRON diffraction , *SYNCHROTRONS , *ELECTRONIC structure - Abstract
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. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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