Enhanced ferromagnetism and microwave absorption properties of BiFeO 3 nanocrystals with Ho substitution

Zhi Ling Hou; Hai Feng Zhou; Ling Bao Kong; Hai Bo Jin; Xin Qi; Mao Sheng Cao

doi:10.1016/j.matlet.2012.06.050

Enhanced ferromagnetism and microwave absorption properties of BiFeO ₃ nanocrystals with Ho substitution

Zhi Ling Hou^*, Hai Feng Zhou, Ling Bao Kong, Hai Bo Jin, Xin Qi, Mao Sheng Cao

^*此作品的通讯作者

材料学院

Beijing University of Chemical Technology

科研成果: 期刊稿件 › 文章 › 同行评审

84 引用（Scopus）

摘要

Ho doped BiFeO ₃ nanoparticles were synthesized by a sol-gel method, and their magnetic and microwave absorption properties were investigated. X-ray diffraction pattern shows that Ho ions occupy the Bi site in BiFeO ₃. The Ho substitution is found to enhance ferromagnetic properties, which attributed to the destruction of spin cycloid structure and the emergence of exchange interaction between Ho 4f electrons and Fe 3d electrons. Microwave magnetic loss also shows an obvious increase in the range of 2-18 GHz for high level substitution, caused mainly by the natural ferromagnetic resonance at microwave frequencies. Furthermore, microwave absorbing bandwidth and intensity are greatly improved due to the better electromagnetic match property of BiFeO ₃ with Ho substitution.

源语言	英语
页（从-至）	110-113
页数	4
期刊	Materials Letters
卷	84
DOI	https://doi.org/10.1016/j.matlet.2012.06.050
出版状态	已出版 - 1 10月 2012

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10.1016/j.matlet.2012.06.050

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title = "Enhanced ferromagnetism and microwave absorption properties of BiFeO 3 nanocrystals with Ho substitution",

abstract = "Ho doped BiFeO 3 nanoparticles were synthesized by a sol-gel method, and their magnetic and microwave absorption properties were investigated. X-ray diffraction pattern shows that Ho ions occupy the Bi site in BiFeO 3. The Ho substitution is found to enhance ferromagnetic properties, which attributed to the destruction of spin cycloid structure and the emergence of exchange interaction between Ho 4f electrons and Fe 3d electrons. Microwave magnetic loss also shows an obvious increase in the range of 2-18 GHz for high level substitution, caused mainly by the natural ferromagnetic resonance at microwave frequencies. Furthermore, microwave absorbing bandwidth and intensity are greatly improved due to the better electromagnetic match property of BiFeO 3 with Ho substitution.",

keywords = "BiFeO, Microwave absorption, Multiferroic, Nanoparticles, Sol-gel, Substitution",

author = "Hou, {Zhi Ling} and Zhou, {Hai Feng} and Kong, {Ling Bao} and Jin, {Hai Bo} and Xin Qi and Cao, {Mao Sheng}",

year = "2012",

month = oct,

day = "1",

doi = "10.1016/j.matlet.2012.06.050",

language = "English",

volume = "84",

pages = "110--113",

journal = "Materials Letters",

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TY - JOUR

T1 - Enhanced ferromagnetism and microwave absorption properties of BiFeO 3 nanocrystals with Ho substitution

AU - Hou, Zhi Ling

AU - Zhou, Hai Feng

AU - Kong, Ling Bao

AU - Jin, Hai Bo

AU - Qi, Xin

AU - Cao, Mao Sheng

PY - 2012/10/1

Y1 - 2012/10/1

N2 - Ho doped BiFeO 3 nanoparticles were synthesized by a sol-gel method, and their magnetic and microwave absorption properties were investigated. X-ray diffraction pattern shows that Ho ions occupy the Bi site in BiFeO 3. The Ho substitution is found to enhance ferromagnetic properties, which attributed to the destruction of spin cycloid structure and the emergence of exchange interaction between Ho 4f electrons and Fe 3d electrons. Microwave magnetic loss also shows an obvious increase in the range of 2-18 GHz for high level substitution, caused mainly by the natural ferromagnetic resonance at microwave frequencies. Furthermore, microwave absorbing bandwidth and intensity are greatly improved due to the better electromagnetic match property of BiFeO 3 with Ho substitution.

AB - Ho doped BiFeO 3 nanoparticles were synthesized by a sol-gel method, and their magnetic and microwave absorption properties were investigated. X-ray diffraction pattern shows that Ho ions occupy the Bi site in BiFeO 3. The Ho substitution is found to enhance ferromagnetic properties, which attributed to the destruction of spin cycloid structure and the emergence of exchange interaction between Ho 4f electrons and Fe 3d electrons. Microwave magnetic loss also shows an obvious increase in the range of 2-18 GHz for high level substitution, caused mainly by the natural ferromagnetic resonance at microwave frequencies. Furthermore, microwave absorbing bandwidth and intensity are greatly improved due to the better electromagnetic match property of BiFeO 3 with Ho substitution.

KW - BiFeO

KW - Microwave absorption

KW - Multiferroic

KW - Nanoparticles

KW - Sol-gel

KW - Substitution

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U2 - 10.1016/j.matlet.2012.06.050

DO - 10.1016/j.matlet.2012.06.050

M3 - Article

AN - SCOPUS:84864420084

SN - 0167-577X

VL - 84

SP - 110

EP - 113

JO - Materials Letters

JF - Materials Letters

ER -

Enhanced ferromagnetism and microwave absorption properties of BiFeO 3 nanocrystals with Ho substitution

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Enhanced ferromagnetism and microwave absorption properties of BiFeO ₃ nanocrystals with Ho substitution