Applied field Mössbauer study of shape anisotropy in Fe nanowire arrays

Qing Feng Zhan; Wei He; Xiao Ma; Ya Qiong Liang; Zhi Qi Kou; Nai Li Di; Zhao Hua Cheng

doi:10.1063/1.1827330

Applied field Mössbauer study of shape anisotropy in Fe nanowire arrays

Qing Feng Zhan, Wei He, Xiao Ma, Ya Qiong Liang, Zhi Qi Kou, Nai Li Di, Zhao Hua Cheng

Chinese Academy of Sciences

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

28 Scopus citations

Abstract

In order to investigate the magnetic anisotropy of Fe nanowiṙe arrays from microscopic point of view, ⁵⁷Fe Mössbauer spectra were measured at various magnetic fields along and perpendicular to the nanowire axis, respectively. On the basis of the absorption intensities of the second and the fifth lines of sextet, the orientation of Fe magnetic moments can be detected. It was found that the shape anisotropy dominates the overall magnetic anisotropy in the Fe nanowires. Furthermore, the longitudinal and transverse demagnetizing fields of Fe nanowire, respectively, were deduced from the effective hyperfine field at ⁵⁷Fe nuclei as a function of applied field. The chain-of-spheres model in conjunction with symmetric fanning mechanism was adopted to interpret the domain structure and the parallel coercivity of magnetic nanowire arrays.

Original language	English
Pages (from-to)	4690-4692
Number of pages	3
Journal	Applied Physics Letters
Volume	85
Issue number	20
DOIs	https://doi.org/10.1063/1.1827330
State	Published - 15 Nov 2004
Externally published	Yes

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title = "Applied field M{\"o}ssbauer study of shape anisotropy in Fe nanowire arrays",

abstract = "In order to investigate the magnetic anisotropy of Fe nanowiṙe arrays from microscopic point of view, 57Fe M{\"o}ssbauer spectra were measured at various magnetic fields along and perpendicular to the nanowire axis, respectively. On the basis of the absorption intensities of the second and the fifth lines of sextet, the orientation of Fe magnetic moments can be detected. It was found that the shape anisotropy dominates the overall magnetic anisotropy in the Fe nanowires. Furthermore, the longitudinal and transverse demagnetizing fields of Fe nanowire, respectively, were deduced from the effective hyperfine field at 57Fe nuclei as a function of applied field. The chain-of-spheres model in conjunction with symmetric fanning mechanism was adopted to interpret the domain structure and the parallel coercivity of magnetic nanowire arrays.",

author = "Zhan, \{Qing Feng\} and Wei He and Xiao Ma and Liang, \{Ya Qiong\} and Kou, \{Zhi Qi\} and Di, \{Nai Li\} and Cheng, \{Zhao Hua\}",

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doi = "10.1063/1.1827330",

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volume = "85",

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journal = "Applied Physics Letters",

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publisher = "American Institute of Physics",

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TY - JOUR

T1 - Applied field Mössbauer study of shape anisotropy in Fe nanowire arrays

AU - Zhan, Qing Feng

AU - He, Wei

AU - Ma, Xiao

AU - Liang, Ya Qiong

AU - Kou, Zhi Qi

AU - Di, Nai Li

AU - Cheng, Zhao Hua

PY - 2004/11/15

Y1 - 2004/11/15

N2 - In order to investigate the magnetic anisotropy of Fe nanowiṙe arrays from microscopic point of view, 57Fe Mössbauer spectra were measured at various magnetic fields along and perpendicular to the nanowire axis, respectively. On the basis of the absorption intensities of the second and the fifth lines of sextet, the orientation of Fe magnetic moments can be detected. It was found that the shape anisotropy dominates the overall magnetic anisotropy in the Fe nanowires. Furthermore, the longitudinal and transverse demagnetizing fields of Fe nanowire, respectively, were deduced from the effective hyperfine field at 57Fe nuclei as a function of applied field. The chain-of-spheres model in conjunction with symmetric fanning mechanism was adopted to interpret the domain structure and the parallel coercivity of magnetic nanowire arrays.

AB - In order to investigate the magnetic anisotropy of Fe nanowiṙe arrays from microscopic point of view, 57Fe Mössbauer spectra were measured at various magnetic fields along and perpendicular to the nanowire axis, respectively. On the basis of the absorption intensities of the second and the fifth lines of sextet, the orientation of Fe magnetic moments can be detected. It was found that the shape anisotropy dominates the overall magnetic anisotropy in the Fe nanowires. Furthermore, the longitudinal and transverse demagnetizing fields of Fe nanowire, respectively, were deduced from the effective hyperfine field at 57Fe nuclei as a function of applied field. The chain-of-spheres model in conjunction with symmetric fanning mechanism was adopted to interpret the domain structure and the parallel coercivity of magnetic nanowire arrays.

UR - https://www.scopus.com/pages/publications/10944233882

U2 - 10.1063/1.1827330

DO - 10.1063/1.1827330

M3 - 文章

AN - SCOPUS:10944233882

SN - 0003-6951

VL - 85

SP - 4690

EP - 4692

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 20

ER -

Applied field Mössbauer study of shape anisotropy in Fe nanowire arrays

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