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

^*Corresponding author for this work

School of Material Science and Engineering

Beijing University of Chemical Technology

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

84 Citations (Scopus)

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.

Original language	English
Pages (from-to)	110-113
Number of pages	4
Journal	Materials Letters
Volume	84
DOIs	https://doi.org/10.1016/j.matlet.2012.06.050
Publication status	Published - 1 Oct 2012

Keywords

BiFeO
Microwave absorption
Multiferroic
Nanoparticles
Sol-gel
Substitution

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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.",

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

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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

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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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Keywords

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