Oxygen vacancies controlled multiple magnetic phases in epitaxial single crystal Co0.5 (Mg0.55 Zn0.45)0.5 O 1-v thin films

Dapeng Zhu; Qiang Cao; Ruimin Qiao; Shimeng Zhu; Wanli Yang; Weixing Xia; Yufeng Tian; Guolei Liu; Shishen Yan

doi:10.1038/srep24188

Oxygen vacancies controlled multiple magnetic phases in epitaxial single crystal Co_0.5 (Mg_0.55 Zn_0.45)_0.5 O _1-v thin films

Dapeng Zhu
, Qiang Cao
, Ruimin Qiao
, Shimeng Zhu
, Wanli Yang
, Weixing Xia
, Yufeng Tian
, Guolei Liu^*
, Shishen Yan

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

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.

Original language	English
Article number	24188
Journal	Scientific Reports
Volume	6
DOIs	https://doi.org/10.1038/srep24188
State	Published - 11 Apr 2016
Externally published	Yes

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title = "Oxygen vacancies controlled multiple magnetic phases in epitaxial single crystal Co0.5 (Mg0.55 Zn0.45)0.5 O 1-v thin films",

abstract = "High quality single-crystal fcc-Cox (Mgy Zn1-y)1-x O1-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 (Mgy Zn1-y)1-x O1-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, Cox (Mgy Zn1-y)1-x O1-v films may have promising applications in future spintronics.",

author = "Dapeng Zhu and Qiang Cao and Ruimin Qiao and Shimeng Zhu and Wanli Yang and Weixing Xia and Yufeng Tian and Guolei Liu and Shishen Yan",

year = "2016",

month = apr,

day = "11",

doi = "10.1038/srep24188",

language = "英语",

volume = "6",

journal = "Scientific Reports",

issn = "2045-2322",

publisher = "Nature Research",

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TY - JOUR

T1 - Oxygen vacancies controlled multiple magnetic phases in epitaxial single crystal Co0.5 (Mg0.55 Zn0.45)0.5 O 1-v thin films

AU - Zhu, Dapeng

AU - Cao, Qiang

AU - Qiao, Ruimin

AU - Zhu, Shimeng

AU - Yang, Wanli

AU - Xia, Weixing

AU - Tian, Yufeng

AU - Liu, Guolei

AU - Yan, Shishen

PY - 2016/4/11

Y1 - 2016/4/11

N2 - High quality single-crystal fcc-Cox (Mgy Zn1-y)1-x O1-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 (Mgy Zn1-y)1-x O1-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, Cox (Mgy Zn1-y)1-x O1-v films may have promising applications in future spintronics.

AB - High quality single-crystal fcc-Cox (Mgy Zn1-y)1-x O1-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 (Mgy Zn1-y)1-x O1-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, Cox (Mgy Zn1-y)1-x O1-v films may have promising applications in future spintronics.

UR - https://www.scopus.com/pages/publications/84964329922

U2 - 10.1038/srep24188

DO - 10.1038/srep24188

M3 - 文章

AN - SCOPUS:84964329922

SN - 2045-2322

VL - 6

JO - Scientific Reports

JF - Scientific Reports

M1 - 24188

ER -

Oxygen vacancies controlled multiple magnetic phases in epitaxial single crystal Co_0.5 (Mg_0.55 Zn_0.45)_0.5 O _1-v thin films

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