Incipient orbital order in half-metallic Ba2FeReO6

Azimonte, C. ; Cezar, J. C. ; Granado, E. ; Huang, Q. ; Lynn, J. W. ; Campoy, J. C. P. ; Gopalakrishnan, J. ; Ramesha, K. (2007) Incipient orbital order in half-metallic Ba2FeReO6 Physical Review Letters, 98 (1). 017204_1-017204_4. ISSN 0031-9007

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Largely unquenched Re 5d orbital magnetic moments in half-metallic Ba2FeReO6 drive a symmetry lowering transition from a cubic paramagnet to a compressed tetragonal (c/a<1) ferrimagnet below TC-305K, with a giant linear magnetoelastic constant and the spins lying spontaneously along the unique tetragonal axis. The large orbital magnetization and degree of structural deformation indicate proximity to a metal-insulator transition. These results point to an incipient orbitally ordered state in the metallic ferrimagnetic phase.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:84285
Deposited On:24 Feb 2012 15:35
Last Modified:24 Feb 2012 15:35

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