Magneto-Structural Coupling in SrTcxRu1-xO3 (x = 0.25,0.5) Perovskites

Authors

Emily M. Reynolds, University of Oxford
Carl P. Romao, University of Oxford
Helen E.A. Brand, Australian Nuclear Science and Technology Organisation, ANSTO
Gordon J. Thorogood, Australian Nuclear Science and Technology Organisation
Frederic Poineau, University of Nevada, Las VegasFollow
Kenneth R. Czerwinski, University of Nevada, Las VegasFollow
Brendan J. Kennedy, University of SydneyFollow

Document Type

Article

Publication Date

4-9-2020

Publication Title

Journal of Solid State Chemistry

Volume

287

First page number:

1

Last page number:

5

Abstract

The structure and magnetic properties of the mixed technetium-ruthenium perovskites SrTcxRu1-xO3 (x ​= ​0.25 and 0.5) have been investigated using variable temperature synchrotron X-ray diffraction, magnetic susceptibility measurements, and DFT calculations. Both oxides are isostructural with SrRuO3 and SrTcO3, and there is no evidence of long-range cation order. Magnetostriction is observed along the c-axis for both oxides. The inverse susceptibility and DFT calculations suggest a cation-disordered ferrimagnetic ground state for SrTc0.5Ru0.5O3.

Keywords

Perovskite; Structural phase transition; Synchrotron powder diffraction; Rietveld method; Ferrimagnetism; Technetium

Disciplines

Chemistry

Language

English

Repository Citation

Reynolds, E. M., Romao, C. P., Brand, H. E., Thorogood, G. J., Poineau, F., Czerwinski, K. R., Kennedy, B. J. (2020). Magneto-Structural Coupling in SrTcxRu1-xO3 (x = 0.25,0.5) Perovskites. Journal of Solid State Chemistry, 287 1-5.
http://dx.doi.org/10.1016/j.jssc.2020.121378