Study on the oxygen vacancy redistribution and the mechanism of electrical manipulation of ferromagnetism in diluted magnetic oxides

Journal Article · Mon Dec 21 00:00:00 EST 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4937585· OSTI ID:22493053

Ren, Shuxia ^[1]; Dong, Jingyu; Chen, Wei; Zhang, Liyong; Guo, Jiajun; Zhang, Li; Zhao, Jing; Zhao, Xu ^[1]

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1. Key Laboratory of Advanced Films of Hebei Province, College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050024 (China)

Electrical manipulation of room temperature ferromagnetism (RTFM) has been observed in several kinds of transition metal doped diluted magnetic oxide films. We demonstrate using X-ray photoelectron spectroscopy that the redistribution of the oxygen vacancies in a film under an electric field plays a crucial role in the enhancement of the RTFM. Based on a detailed analysis of the X-ray photoelectron spectroscopy data for the oxygen vacancy distribution in different resistive states, a unified mechanism has been proposed. This work points out a new direction for improving the magnetic properties of these materials by controlling oxygen vacancies in the interior of the films.

• OSTI ID: 22493053
• Journal Information: Journal of Applied Physics, Vol. 118, Issue 23; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DOPED MATERIALS
ELECTRIC FIELDS
FERROMAGNETISM
FILMS
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
OXIDES
TEMPERATURE RANGE 0273-0400 K
TRANSITION ELEMENTS
VACANCIES
X-RAY PHOTOELECTRON SPECTROSCOPY