Role of oxygen defects in magnetic property of Cu doped ZnO

Weijing Liu; Xiaodong Tang; Zheng Tang; Fenghong Chu; Tao Zeng; Naiyun Tang

doi:10.1016/j.jallcom.2014.07.033

Role of oxygen defects in magnetic property of Cu doped ZnO

Weijing Liu^*
, Xiaodong Tang
, Zheng Tang
, Fenghong Chu
, Tao Zeng
, Naiyun Tang

^*Corresponding author for this work

School of Physics and Electronic Science

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

35 Scopus citations

Abstract

Cu doped ZnO nano-particles were synthesized by a solution route and annealed in N₂, O₂, and Ar, respectively. X-ray diffraction and X-ray photoelectron spectroscopy measurements show that the samples possess typical wurtzite structure and have no other impurity phases. Magnetization loops for ZnO samples were measured and clearly show typical ferromagnetic saturation behavior. With the defect analysis based on photoluminescence spectroscopy, the effect of defects on the nature and origin of ferromagnetism was investigated. The results suggest oxygen vacancies, especially singly ionized oxygen vacancies, play a crucial role in mediating ferromagnetism in the Cu doped ZnO system.

Original language	English
Pages (from-to)	740-744
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	615
DOIs	https://doi.org/10.1016/j.jallcom.2014.07.033
State	Published - 5 Dec 2014

Keywords

Cu doped ZnO
Diluted magnetic semiconductors
Oxygen vacancy
Photoluminescence

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10.1016/j.jallcom.2014.07.033

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title = "Role of oxygen defects in magnetic property of Cu doped ZnO",

abstract = "Cu doped ZnO nano-particles were synthesized by a solution route and annealed in N2, O2, and Ar, respectively. X-ray diffraction and X-ray photoelectron spectroscopy measurements show that the samples possess typical wurtzite structure and have no other impurity phases. Magnetization loops for ZnO samples were measured and clearly show typical ferromagnetic saturation behavior. With the defect analysis based on photoluminescence spectroscopy, the effect of defects on the nature and origin of ferromagnetism was investigated. The results suggest oxygen vacancies, especially singly ionized oxygen vacancies, play a crucial role in mediating ferromagnetism in the Cu doped ZnO system.",

keywords = "Cu doped ZnO, Diluted magnetic semiconductors, Oxygen vacancy, Photoluminescence",

author = "Weijing Liu and Xiaodong Tang and Zheng Tang and Fenghong Chu and Tao Zeng and Naiyun Tang",

year = "2014",

month = dec,

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doi = "10.1016/j.jallcom.2014.07.033",

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pages = "740--744",

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TY - JOUR

T1 - Role of oxygen defects in magnetic property of Cu doped ZnO

AU - Liu, Weijing

AU - Tang, Xiaodong

AU - Tang, Zheng

AU - Chu, Fenghong

AU - Zeng, Tao

AU - Tang, Naiyun

PY - 2014/12/5

Y1 - 2014/12/5

N2 - Cu doped ZnO nano-particles were synthesized by a solution route and annealed in N2, O2, and Ar, respectively. X-ray diffraction and X-ray photoelectron spectroscopy measurements show that the samples possess typical wurtzite structure and have no other impurity phases. Magnetization loops for ZnO samples were measured and clearly show typical ferromagnetic saturation behavior. With the defect analysis based on photoluminescence spectroscopy, the effect of defects on the nature and origin of ferromagnetism was investigated. The results suggest oxygen vacancies, especially singly ionized oxygen vacancies, play a crucial role in mediating ferromagnetism in the Cu doped ZnO system.

AB - Cu doped ZnO nano-particles were synthesized by a solution route and annealed in N2, O2, and Ar, respectively. X-ray diffraction and X-ray photoelectron spectroscopy measurements show that the samples possess typical wurtzite structure and have no other impurity phases. Magnetization loops for ZnO samples were measured and clearly show typical ferromagnetic saturation behavior. With the defect analysis based on photoluminescence spectroscopy, the effect of defects on the nature and origin of ferromagnetism was investigated. The results suggest oxygen vacancies, especially singly ionized oxygen vacancies, play a crucial role in mediating ferromagnetism in the Cu doped ZnO system.

KW - Cu doped ZnO

KW - Diluted magnetic semiconductors

KW - Oxygen vacancy

KW - Photoluminescence

UR - https://www.scopus.com/pages/publications/84904980692

U2 - 10.1016/j.jallcom.2014.07.033

DO - 10.1016/j.jallcom.2014.07.033

M3 - 文章

AN - SCOPUS:84904980692

SN - 0925-8388

VL - 615

SP - 740

EP - 744

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Role of oxygen defects in magnetic property of Cu doped ZnO

Abstract

Keywords

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