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Sr2CrOsO6: End point of a spin-polarized metal-insulator transition by 5d band filling

Krockenberger, Y. and Mogare, K. and Reehuis, M. and Tovar, M. and Jansen, M. and Vaitheeswaran, G. and Kanchana, V. and Bultmark, F. and Delin, A. and Wilhelm, F. and Rogalev, A. and Winkler, A. and Alff, L. (2007):
Sr2CrOsO6: End point of a spin-polarized metal-insulator transition by 5d band filling.
In: Physical Review B, APS, pp. 020404-1-020404-4, 75, (2), ISSN 1098-0121, [Online-Edition: http://dx.doi.org/10.1103/PhysRevB.75.020404],
[Article]

Abstract

In the search for new spintronic materials with high spin polarization at room temperature, we have synthesized an osmium-based double perovskite with a Curie temperature of 725 K. Our combined experimental results confirm the existence of a sizable induced magnetic moment at the Os site, supported by band-structure calculations, in agreement with a proposed kinetic-energy-driven mechanism of ferrimagnetism in these compounds. The intriguing property of Sr2CrOsO6 is that it is at the end point of a metal-insulator transition due to 5d band filling and at the same time ferrimagnetism and high-spin polarization are preserved.

Item Type: Article
Erschienen: 2007
Creators: Krockenberger, Y. and Mogare, K. and Reehuis, M. and Tovar, M. and Jansen, M. and Vaitheeswaran, G. and Kanchana, V. and Bultmark, F. and Delin, A. and Wilhelm, F. and Rogalev, A. and Winkler, A. and Alff, L.
Title: Sr2CrOsO6: End point of a spin-polarized metal-insulator transition by 5d band filling
Language: English
Abstract:

In the search for new spintronic materials with high spin polarization at room temperature, we have synthesized an osmium-based double perovskite with a Curie temperature of 725 K. Our combined experimental results confirm the existence of a sizable induced magnetic moment at the Os site, supported by band-structure calculations, in agreement with a proposed kinetic-energy-driven mechanism of ferrimagnetism in these compounds. The intriguing property of Sr2CrOsO6 is that it is at the end point of a metal-insulator transition due to 5d band filling and at the same time ferrimagnetism and high-spin polarization are preserved.

Journal or Publication Title: Physical Review B
Volume: 75
Number: 2
Publisher: APS
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Advanced Thin Film Technology
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 29 Mar 2012 09:22
Official URL: http://dx.doi.org/10.1103/PhysRevB.75.020404
Identification Number: doi:10.1103/PhysRevB.75.020404
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