Sr{sub 2}CrOsO{sub 6}: End point of a spin-polarized metal-insulator transition by 5d band filling

Journal Article · Mon Jan 01 00:00:00 EST 2007 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.75.020404· OSTI ID:20976646

Krockenberger, Y ^[1]; Mogare, K; Jansen, M ^[2]; Reehuis, M ^[2]; Tovar, M ^[3]; Vaitheeswaran, G; Kanchana, V ^[2]; Bultmark, F ^[4]; Delin, A ^[5]; Wilhelm, F; Rogalev, A ^[6]; Winkler, A; Alff, L ^[1]

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1. Darmstadt University of Technology, Petersenstrasse 23, 64287 Darmstadt (Germany)
2. Max-Planck-Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart (Germany)
3. Hahn-Meitner-Institut (HMI), 14109 Berlin (Germany)
4. Department of Physics, University of Uppsala, Box 530, 75121 Uppsala (Sweden)
5. Department of Materials Science and Engineering, Royal Institute of Technology (KTH), 10044 Stockholm (Sweden)
6. European Synchrotron Radiation Facility (ESRF), 6 Rue Jules Horowitz, Boite Postale 220, 38043 Grenoble Cedex 9 (France)

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 Sr{sub 2}CrOsO{sub 6} 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.

• OSTI ID: 20976646
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 75, Issue 2; Other Information: DOI: 10.1103/PhysRevB.75.020404; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHROMIUM COMPOUNDS
CURIE POINT
FERRIMAGNETIC MATERIALS
FERRIMAGNETISM
KINETIC ENERGY
MAGNETIC MOMENTS
OSMIUM
PEROVSKITE
SPIN
SPIN ORIENTATION
STRONTIUM COMPOUNDS
TEMPERATURE RANGE 0273-0400 K