Files and links (1)
SubmittedarXiv.org - Non-exclusive license to distribute, Open
Journal article
Room-Temperature Ferromagnetic Insulating State in Cation-Ordered Double-Perovskite Sr2Fe1+xRe1−xO6Films
v 31(4), 1805389
25 Jan 2019
PMID: 30489665
Abstract
Ferromagnetic insulators (FMIs) are one of the most important components in developing dissipationless electronic and spintronic devices. However, FMIs are innately rare to find in nature as ferromagnetism generally accompanies metallicity. Here, novel room-temperature FMI films that are epitaxially synthesized by deliberate control of the ratio between two B-site cations in the double perovskite Sr2Fe1+xRe1-xO6 (−0.2 ≤ x ≤ 0.2) are reported. In contrast to the known FM metallic phase in stoichiometric Sr2FeReO6, an FMI state with a high Curie temperature (Tc ≈ 400 K) and a large saturation magnetization (MS ≈ 1.8 µB f.u.−1) is found in highly cation-ordered Fe-rich phases. The stabilization of the FMI state is attributed to the formation of extra Fe3+Fe3+ and Fe3+Re6+ bonding states, which originate from the relatively excess Fe ions owing to the deficiency in Re ions. The emerging FMI state created by controlling cations in the oxide double perovskites opens the door to developing novel oxide quantum materials and spintronic devices.
Metrics
Details
- Title
- Room-Temperature Ferromagnetic Insulating State in Cation-Ordered Double-Perovskite Sr2Fe1+xRe1−xO6Films
- Creators
- Changhee Sohn - Oak Ridge National LaboratoryElizabeth Skoropata - Oak Ridge National LaboratoryYongseong Choi - Argonne National LaboratoryXiang Gao - Oak Ridge National LaboratoryAnkur Rastogi - Oak Ridge National LaboratoryAmanda Huon - Drexel UniversityMichael A McGuire - Oak Ridge National LaboratoryLauren Nuckols - University of Tennessee at KnoxvilleYanwen Zhang - Oak Ridge National LaboratoryJohn W. Freeland - Argonne National LaboratoryDaniel Haskel - Argonne National LaboratoryHo Nyung Lee - Oak Ridge National Laboratory
- Publication Details
- v 31(4), 1805389
- Publisher
- Wiley
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Drexel University
- Web of Science ID
- WOS:000456325900024
- Scopus ID
- 2-s2.0-85057891442
- Other Identifier
- 991021860707004721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter