Giant Magnetoresistance in the Half‐Metallic Double‐Perovskite Ferrimagnet Mn2FeReO6. Issue 41 (31st July 2015)

• Record Type: Journal Article
• Authors: Li, Man‐Rong; Retuerto, Maria; Deng, Zheng; Stephens, Peter W.; Croft, Mark; Huang, Qingzhen; Wu, Hui; Deng, Xiaoyu; Kotliar, Gabriel; Sánchez‐Benítez, Javier; Hadermann, Joke; Walker, David; Greenblatt, Martha
• Is Part Of: Angewandte Chemie international edition. Volume 54:Issue 41(2015)
• Page Start: 12069
• Page End: 12073
• Publication Date: 2015-07-31
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201506456
• Languages: English
• ISSNs: 1433-7851

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>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.</p> </abstract>