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|Title: ||High temperature magnetic ordering in the 4d perovskite SrTcO3.|
|Authors: ||Rodriguez, EE|
|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|
|Appears in Collections:||Journal Articles|
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