Giant Magnetoresistance in the Half-Metallic Double-Perovskite Ferrimagnet Mn2FeReO6

Man Rong Li, Maria Retuerto, Zheng Deng, Peter W. Stephens, Mark Croft, Qingzhen Huang, Hui Wu, Xiaoyu Deng, Gabriel Kotliar, Javier Sánchez-Benítez, Joke Hadermann, David Walker, Martha Greenblatt

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

The first transition-metal-only double perovskite compound, Mn2+2Fe3+Re5+O6, with 17 unpaired d electrons displays ferrimagnetic ordering up to 520 K and a giant positive magnetoresistance of up to 220 % at 5 K 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.

Original languageEnglish (US)
Pages (from-to)12069-12073
Number of pages5
JournalAngewandte Chemie - International Edition
Volume54
Issue number41
DOIs
StatePublished - Oct 1 2015

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Keywords

  • density functional calculations
  • giant magnetoresistance
  • half-metallicity
  • magnetic properties
  • perovskite phases

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