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

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 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.

Authors:
 [1];  [2]; ;  [3];  [3];  [4];  [5]; ;  [3];  [6];  [7];  [8]; ;  [9]; ;  [1]
  1. Darmstadt University of Technology, Petersenstrasse 23, 64287 Darmstadt (Germany)
  2. (Germany)
  3. Max-Planck-Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart (Germany)
  4. (HMI), 14109 Berlin (Germany)
  5. Hahn-Meitner-Institut (HMI), 14109 Berlin (Germany)
  6. (KTH), 10044 Stockholm (Sweden)
  7. Department of Physics, University of Uppsala, Box 530, 75121 Uppsala (Sweden)
  8. Department of Materials Science and Engineering, Royal Institute of Technology (KTH), 10044 Stockholm (Sweden)
  9. European Synchrotron Radiation Facility (ESRF), 6 Rue Jules Horowitz, Boite Postale 220, 38043 Grenoble Cedex 9 (France)
Publication Date:
OSTI Identifier:
20976646
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 75; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevB.75.020404; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Krockenberger, Y., Max-Planck-Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Mogare, K., Jansen, M., Reehuis, M., Hahn-Meitner-Institut, Tovar, M., Vaitheeswaran, G., Kanchana, V., Department of Materials Science and Engineering, Royal Institute of Technology, Bultmark, F., Delin, A., Wilhelm, F., Rogalev, A., Winkler, A., and Alff, L.. Sr{sub 2}CrOsO{sub 6}: End point of a spin-polarized metal-insulator transition by 5d band filling. United States: N. p., 2007. Web. doi:10.1103/PHYSREVB.75.020404.
Krockenberger, Y., Max-Planck-Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Mogare, K., Jansen, M., Reehuis, M., Hahn-Meitner-Institut, Tovar, M., Vaitheeswaran, G., Kanchana, V., Department of Materials Science and Engineering, Royal Institute of Technology, Bultmark, F., Delin, A., Wilhelm, F., Rogalev, A., Winkler, A., & Alff, L.. Sr{sub 2}CrOsO{sub 6}: End point of a spin-polarized metal-insulator transition by 5d band filling. United States. doi:10.1103/PHYSREVB.75.020404.
Krockenberger, Y., Max-Planck-Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Mogare, K., Jansen, M., Reehuis, M., Hahn-Meitner-Institut, Tovar, M., Vaitheeswaran, G., Kanchana, V., Department of Materials Science and Engineering, Royal Institute of Technology, Bultmark, F., Delin, A., Wilhelm, F., Rogalev, A., Winkler, A., and Alff, L.. Mon . "Sr{sub 2}CrOsO{sub 6}: End point of a spin-polarized metal-insulator transition by 5d band filling". United States. doi:10.1103/PHYSREVB.75.020404.
@article{osti_20976646,
title = {Sr{sub 2}CrOsO{sub 6}: End point of a spin-polarized metal-insulator transition by 5d band filling},
author = {Krockenberger, Y. and Max-Planck-Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart and Mogare, K. and Jansen, M. and Reehuis, M. and Hahn-Meitner-Institut and Tovar, M. and Vaitheeswaran, G. and Kanchana, V. and Department of Materials Science and Engineering, Royal Institute of Technology and Bultmark, F. and Delin, A. and Wilhelm, F. and Rogalev, A. and Winkler, A. and Alff, L.},
abstractNote = {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.},
doi = {10.1103/PHYSREVB.75.020404},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 2,
volume = 75,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}