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ANSTO Publications Online >
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Please use this identifier to cite or link to this item:
http://apo.ansto.gov.au/dspace/handle/10238/3096
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| Title: | High temperature magnetic ordering in the 4d perovskite SrTcO3. |
| Authors: | Rodriguez, EE Poineau, F Llobet, A Kennedy, BJ Avdeev, M Thorogood, GJ Carter, ML Seshadri, R Singh, DJ Cheetham, AK |
| Keywords: | Antiferromagnetism Perovskite Technetium Oxygen Electronic Structure Hybridization |
| Issue Date: | 7-Feb-2011 |
| Publisher: | American Physical Society |
| Citation: | Rodriguez, E. E., Poineau, F., Llobet, A., Kennedy, B. J., Avdeev, M., Thorogood, G. J., et al. (2011). High temperature magnetic ordering in the 4d perovskite SrTcO3. Physical Review Letters, 106(6), 067201. |
| Abstract: | We present evidence for possibly the highest magnetic ordering temperature in any compound without 3d transition elements. Neutron powder diffraction measurements, at both time-of-flight and constant wavelength sources, were performed on two independently prepared SrTcO3 powders. SrTcO3 adopts a distorted perovskite structure with G-type antiferromagnetic ordering and has a moment of 1.87(4)μB per Tc cation at room temperature with an extraordinarily high Néel point close to 750°C. Electronic structure calculations reveal extensive mixing between the technetium 4d states and oxygen states proximal to the Fermi level. This hybridization leads to a close relationship between magnetic ordering temperature and moment formation in SrTcO3. © 2011, American Physical Society |
| URI: | http://dx.doi.org/10.1103/PhysRevLett.106.067201 http://apo.ansto.gov.au/dspace/handle/10238/3096 |
| ISSN: | 0031-9007 |
| Appears in Collections: | Journal Articles |
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