Oxygen vacancies controlled multiple magnetic phases in epitaxial single crystal Co0.5(Mg0.55Zn0.45)0.5O1-v thin films
Abstract
High quality single-crystal fcc-Co x (Mg y Zn 1-y ) 1-x O 1-v epitaxial thin films with high Co concentration up to x = 0.5 have been fabricated by molecular beam epitaxy. Systematic magnetic property characterization and soft X-ray absorption spectroscopy analysis indicate that the coexistence of ferromagnetic regions, superparamagnetic clusters, and non-magnetic boundaries in the as-prepared Co x (Mg y Zn 1-y ) 1-x O 1-v films is a consequence of the intrinsic inhomogeneous distribution of oxygen vacancies. Furthermore, the relative strength of multiple phases could be modulated by controlling the oxygen partial pressure during sample preparation. Armed with both controllable magnetic properties and tunable band-gap, Co x (Mg y Zn 1-y ) 1-x O 1-v films may have promising applications in future spintronics.
- Authors:
-
- Shandong Univ., Jinan (China). School of Physics, State Key lab. of Crystal Materials
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source
- Chinese Academy of Sciences (CAS), Ningbo (China). Ningbo Inst. of Materials Technology and Engineering
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1379281
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Scientific Reports
- Additional Journal Information:
- Journal Volume: 6; Journal Issue: 1; Journal ID: ISSN 2045-2322
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; ferromagnetism; magnetic properties and materials
Citation Formats
Zhu, Dapeng, Cao, Qiang, Qiao, Ruimin, Zhu, Shimeng, Yang, Wanli, Xia, Weixing, Tian, Yufeng, Liu, Guolei, and Yan, Shishen. Oxygen vacancies controlled multiple magnetic phases in epitaxial single crystal Co0.5(Mg0.55Zn0.45)0.5O1-v thin films. United States: N. p., 2016.
Web. doi:10.1038/srep24188.
Zhu, Dapeng, Cao, Qiang, Qiao, Ruimin, Zhu, Shimeng, Yang, Wanli, Xia, Weixing, Tian, Yufeng, Liu, Guolei, & Yan, Shishen. Oxygen vacancies controlled multiple magnetic phases in epitaxial single crystal Co0.5(Mg0.55Zn0.45)0.5O1-v thin films. United States. https://doi.org/10.1038/srep24188
Zhu, Dapeng, Cao, Qiang, Qiao, Ruimin, Zhu, Shimeng, Yang, Wanli, Xia, Weixing, Tian, Yufeng, Liu, Guolei, and Yan, Shishen. Mon .
"Oxygen vacancies controlled multiple magnetic phases in epitaxial single crystal Co0.5(Mg0.55Zn0.45)0.5O1-v thin films". United States. https://doi.org/10.1038/srep24188. https://www.osti.gov/servlets/purl/1379281.
@article{osti_1379281,
title = {Oxygen vacancies controlled multiple magnetic phases in epitaxial single crystal Co0.5(Mg0.55Zn0.45)0.5O1-v thin films},
author = {Zhu, Dapeng and Cao, Qiang and Qiao, Ruimin and Zhu, Shimeng and Yang, Wanli and Xia, Weixing and Tian, Yufeng and Liu, Guolei and Yan, Shishen},
abstractNote = {High quality single-crystal fcc-Co x (Mg y Zn 1-y ) 1-x O 1-v epitaxial thin films with high Co concentration up to x = 0.5 have been fabricated by molecular beam epitaxy. Systematic magnetic property characterization and soft X-ray absorption spectroscopy analysis indicate that the coexistence of ferromagnetic regions, superparamagnetic clusters, and non-magnetic boundaries in the as-prepared Co x (Mg y Zn 1-y ) 1-x O 1-v films is a consequence of the intrinsic inhomogeneous distribution of oxygen vacancies. Furthermore, the relative strength of multiple phases could be modulated by controlling the oxygen partial pressure during sample preparation. Armed with both controllable magnetic properties and tunable band-gap, Co x (Mg y Zn 1-y ) 1-x O 1-v films may have promising applications in future spintronics.},
doi = {10.1038/srep24188},
journal = {Scientific Reports},
number = 1,
volume = 6,
place = {United States},
year = {Mon Apr 11 00:00:00 EDT 2016},
month = {Mon Apr 11 00:00:00 EDT 2016}
}
Web of Science
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