Title
Giant magnetoresistance in the half-metallic double-perovskite ferrimagnet <tex>$Mn_{2}FeReO_{6}$</tex> Giant magnetoresistance in the half-metallic double-perovskite ferrimagnet <tex>$Mn_{2}FeReO_{6}$</tex>
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Weinheim ,
Subject
Chemistry
Source (journal)
Angewandte Chemie: international edition in English. - Weinheim
Volume/pages
54(2015) :41 , p. 12069-12073
ISSN
1433-7851
ISI
000363396000031
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The first transition-metal-only double perovskite compound, Mn2+ Fe-2(3+) Re5+ O-6, with 17 unpaired d electrons displays ferrimagnetic ordering up to 520K and a giant positive magnetoresistance of up to 220% at 5K and 8 T. These properties result from the ferrimagnetically coupled Fe and Re sublattice and are affected by a two-to-one magnetic-structure transition of the Mn sublattice when a magnetic field is applied. Theoretical calculations indicate that the half-metallic state can be mainly attributed to the spin polarization of the Fe and Re sites.
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https://repository.uantwerpen.be/docman/iruaauth/a9c506/129457.pdf
Handle