Abstract
We have discovered that synthesis at high-pressure oxygen of 600 atm at 1100°C produces nonstoichiometric SrRu1−v O3 perovskites with randomly distributed vacancies on the Ru-sites. The increased amount of Ru vacancies rapidly suppresses the ferromagnetic T C from 162 to 86K for Δv ∼ 0.06. We associate the decrease of T C with an increased formal valence of Ru and the induced structural disorder.
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Dabrowski, B. et al. (2002). Decrease of Ferromagnetic Transition Temperature in Nonstoichiometric SrRu1−v O3 Perovskites. In: Noce, C., Vecchione, A., Cuoco, M., Romano, A. (eds) Ruthenate and Rutheno-Cuprate Materials. Lecture Notes in Physics, vol 603. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45814-X_20
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DOI: https://doi.org/10.1007/3-540-45814-X_20
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