Exchange bias and the origin of magnetism in Mn-doped ZnO tetrapods

R. K. Zheng; H. Liu; X. X. Zhang; V. A.L. Roy; A. B. Djurišić

doi:10.1063/1.1795366

Exchange bias and the origin of magnetism in Mn-doped ZnO tetrapods

R. K. Zheng
, H. Liu
, X. X. Zhang
, V. A.L. Roy
, A. B. Djurišić

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

106 Citations (Scopus)

Abstract

The origin of magnetism and exchange bias of Mn-doped ZnO tetrapod nanostructures were investigated. The nanostructures were synthesized by evaporating Zn metal under humid argon flow and then Mn was doped into ZnO nanostructures by diffusion at 600°C. High-resolution transmission electron microscopy observations were used to investigate the existence of surface layers in the tetrapods. At 100 Oe field, the zero-field cooled (ZFC) and field cooled (FC) magnetizations of the sample nanostructures were determined. It was observed that the exchange bias in the sample was due to exchange interaction between ferrimagnetic phase in manganese oxides.

Original language	English
Pages (from-to)	2589-2591
Number of pages	3
Journal	Applied Physics Letters
Volume	85
Issue number	13
DOIs	https://doi.org/10.1063/1.1795366
Publication status	Published - 27 Sept 2004
Externally published	Yes

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title = "Exchange bias and the origin of magnetism in Mn-doped ZnO tetrapods",

abstract = "The origin of magnetism and exchange bias of Mn-doped ZnO tetrapod nanostructures were investigated. The nanostructures were synthesized by evaporating Zn metal under humid argon flow and then Mn was doped into ZnO nanostructures by diffusion at 600°C. High-resolution transmission electron microscopy observations were used to investigate the existence of surface layers in the tetrapods. At 100 Oe field, the zero-field cooled (ZFC) and field cooled (FC) magnetizations of the sample nanostructures were determined. It was observed that the exchange bias in the sample was due to exchange interaction between ferrimagnetic phase in manganese oxides.",

author = "Zheng, \{R. K.\} and H. Liu and Zhang, \{X. X.\} and Roy, \{V. A.L.\} and Djuri{\v s}i{\'c}, \{A. B.\}",

note = "Funding Information: This work was supported by Research Grants Council of the Hong Kong Special Administration Region, China (Project Nos. HKUST6165/01P and HKUST6059/02E) and the University of Hong Kong University Research Committee Seed Funding Grant. ",

year = "2004",

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day = "27",

doi = "10.1063/1.1795366",

language = "English",

volume = "85",

pages = "2589--2591",

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TY - JOUR

T1 - Exchange bias and the origin of magnetism in Mn-doped ZnO tetrapods

AU - Zheng, R. K.

AU - Liu, H.

AU - Zhang, X. X.

AU - Roy, V. A.L.

AU - Djurišić, A. B.

N1 - Funding Information: This work was supported by Research Grants Council of the Hong Kong Special Administration Region, China (Project Nos. HKUST6165/01P and HKUST6059/02E) and the University of Hong Kong University Research Committee Seed Funding Grant.

PY - 2004/9/27

Y1 - 2004/9/27

N2 - The origin of magnetism and exchange bias of Mn-doped ZnO tetrapod nanostructures were investigated. The nanostructures were synthesized by evaporating Zn metal under humid argon flow and then Mn was doped into ZnO nanostructures by diffusion at 600°C. High-resolution transmission electron microscopy observations were used to investigate the existence of surface layers in the tetrapods. At 100 Oe field, the zero-field cooled (ZFC) and field cooled (FC) magnetizations of the sample nanostructures were determined. It was observed that the exchange bias in the sample was due to exchange interaction between ferrimagnetic phase in manganese oxides.

AB - The origin of magnetism and exchange bias of Mn-doped ZnO tetrapod nanostructures were investigated. The nanostructures were synthesized by evaporating Zn metal under humid argon flow and then Mn was doped into ZnO nanostructures by diffusion at 600°C. High-resolution transmission electron microscopy observations were used to investigate the existence of surface layers in the tetrapods. At 100 Oe field, the zero-field cooled (ZFC) and field cooled (FC) magnetizations of the sample nanostructures were determined. It was observed that the exchange bias in the sample was due to exchange interaction between ferrimagnetic phase in manganese oxides.

UR - https://www.scopus.com/pages/publications/7544247004

U2 - 10.1063/1.1795366

DO - 10.1063/1.1795366

M3 - Article

AN - SCOPUS:7544247004

SN - 0003-6951

VL - 85

SP - 2589

EP - 2591

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 13

ER -

Exchange bias and the origin of magnetism in Mn-doped ZnO tetrapods

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