Electromagnetic properties of multiferroic magnetoelectric BaTiO 3-Co xFe 3-xO 4 core-shell particles obtained by homogeneous coprecipitation

Mei Yu; Jingzhi Hu; Jianhua Liu; Songmei Li

doi:10.1016/j.jmmm.2012.08.033

Electromagnetic properties of multiferroic magnetoelectric BaTiO ₃-Co _xFe _3-xO ₄ core-shell particles obtained by homogeneous coprecipitation

Mei Yu^*
, Jingzhi Hu
, Jianhua Liu
, Songmei Li

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

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

23 Scopus citations

Abstract

Electromagnetic properties of multiferroic magnetoelectric core-shell structured BaTiO ₃-Co _xFe _3-xO ₄ composite particles synthesized by homogeneous coprecipitation method were studied. The complex permeability and permittivity of samples prepared with different R values (the molar ratio of FeCl ₂·4H ₂O to CoCl ₂·6H ₂O, M(FeCl ₂·4H ₂O)/M(CoCl ₂·6 H ₂O)) during the coprecipitation processes were measured in the frequency range of 2-8 GHz by a network vector analyzer. The result showed that the electromagnetic parameters of BaTiO ₃-Co _xFe _3-xO ₄ core-shell particles could be controlled effectively by adjusting the R value of reaction solution. The increasing R value intensified the interfacial polarization process, leading the ε′ value of BaTiO ₃-Co _xFe _3-xO ₄ core-shell particles to increase and the fluctuation of ε″ curves to become obvious. Meanwhile, the increasing R value enhanced M _s and adjusted the direction of easy magnetization axis, which resulted in the μ′ value of BaTiO ₃-Co _xFe _3-xO ₄ core-shell particles getting increased and the resonance peak of μ″ moving to a higher frequency. The increased complex permeability and permittivity also resulted in an improvement of dielectric and magnetic loss. Crown

Original language	English
Pages (from-to)	31-34
Number of pages	4
Journal	Journal of Magnetism and Magnetic Materials
Volume	326
DOIs	https://doi.org/10.1016/j.jmmm.2012.08.033
State	Published - Jan 2013

Keywords

Barium titanate
Cobalt ferrite
Core-shell
Electromagnetic property

Access to Document

10.1016/j.jmmm.2012.08.033

Cite this

@article{f3e56eb771ea4afa82c8cd99d38c814f,

title = "Electromagnetic properties of multiferroic magnetoelectric BaTiO 3-Co xFe 3-xO 4 core-shell particles obtained by homogeneous coprecipitation",

abstract = "Electromagnetic properties of multiferroic magnetoelectric core-shell structured BaTiO 3-Co xFe 3-xO 4 composite particles synthesized by homogeneous coprecipitation method were studied. The complex permeability and permittivity of samples prepared with different R values (the molar ratio of FeCl 2·4H 2O to CoCl 2·6H 2O, M(FeCl 2·4H 2O)/M(CoCl 2·6 H 2O)) during the coprecipitation processes were measured in the frequency range of 2-8 GHz by a network vector analyzer. The result showed that the electromagnetic parameters of BaTiO 3-Co xFe 3-xO 4 core-shell particles could be controlled effectively by adjusting the R value of reaction solution. The increasing R value intensified the interfacial polarization process, leading the ε′ value of BaTiO 3-Co xFe 3-xO 4 core-shell particles to increase and the fluctuation of ε″ curves to become obvious. Meanwhile, the increasing R value enhanced M s and adjusted the direction of easy magnetization axis, which resulted in the μ′ value of BaTiO 3-Co xFe 3-xO 4 core-shell particles getting increased and the resonance peak of μ″ moving to a higher frequency. The increased complex permeability and permittivity also resulted in an improvement of dielectric and magnetic loss. Crown",

keywords = "Barium titanate, Cobalt ferrite, Core-shell, Electromagnetic property",

author = "Mei Yu and Jingzhi Hu and Jianhua Liu and Songmei Li",

year = "2013",

month = jan,

doi = "10.1016/j.jmmm.2012.08.033",

language = "英语",

volume = "326",

pages = "31--34",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Electromagnetic properties of multiferroic magnetoelectric BaTiO 3-Co xFe 3-xO 4 core-shell particles obtained by homogeneous coprecipitation

AU - Yu, Mei

AU - Hu, Jingzhi

AU - Liu, Jianhua

AU - Li, Songmei

PY - 2013/1

Y1 - 2013/1

N2 - Electromagnetic properties of multiferroic magnetoelectric core-shell structured BaTiO 3-Co xFe 3-xO 4 composite particles synthesized by homogeneous coprecipitation method were studied. The complex permeability and permittivity of samples prepared with different R values (the molar ratio of FeCl 2·4H 2O to CoCl 2·6H 2O, M(FeCl 2·4H 2O)/M(CoCl 2·6 H 2O)) during the coprecipitation processes were measured in the frequency range of 2-8 GHz by a network vector analyzer. The result showed that the electromagnetic parameters of BaTiO 3-Co xFe 3-xO 4 core-shell particles could be controlled effectively by adjusting the R value of reaction solution. The increasing R value intensified the interfacial polarization process, leading the ε′ value of BaTiO 3-Co xFe 3-xO 4 core-shell particles to increase and the fluctuation of ε″ curves to become obvious. Meanwhile, the increasing R value enhanced M s and adjusted the direction of easy magnetization axis, which resulted in the μ′ value of BaTiO 3-Co xFe 3-xO 4 core-shell particles getting increased and the resonance peak of μ″ moving to a higher frequency. The increased complex permeability and permittivity also resulted in an improvement of dielectric and magnetic loss. Crown

AB - Electromagnetic properties of multiferroic magnetoelectric core-shell structured BaTiO 3-Co xFe 3-xO 4 composite particles synthesized by homogeneous coprecipitation method were studied. The complex permeability and permittivity of samples prepared with different R values (the molar ratio of FeCl 2·4H 2O to CoCl 2·6H 2O, M(FeCl 2·4H 2O)/M(CoCl 2·6 H 2O)) during the coprecipitation processes were measured in the frequency range of 2-8 GHz by a network vector analyzer. The result showed that the electromagnetic parameters of BaTiO 3-Co xFe 3-xO 4 core-shell particles could be controlled effectively by adjusting the R value of reaction solution. The increasing R value intensified the interfacial polarization process, leading the ε′ value of BaTiO 3-Co xFe 3-xO 4 core-shell particles to increase and the fluctuation of ε″ curves to become obvious. Meanwhile, the increasing R value enhanced M s and adjusted the direction of easy magnetization axis, which resulted in the μ′ value of BaTiO 3-Co xFe 3-xO 4 core-shell particles getting increased and the resonance peak of μ″ moving to a higher frequency. The increased complex permeability and permittivity also resulted in an improvement of dielectric and magnetic loss. Crown

KW - Barium titanate

KW - Cobalt ferrite

KW - Core-shell

KW - Electromagnetic property

UR - https://www.scopus.com/pages/publications/84868676925

U2 - 10.1016/j.jmmm.2012.08.033

DO - 10.1016/j.jmmm.2012.08.033

M3 - 文章

AN - SCOPUS:84868676925

SN - 0304-8853

VL - 326

SP - 31

EP - 34

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

ER -

Electromagnetic properties of multiferroic magnetoelectric BaTiO ₃-Co _xFe _3-xO ₄ core-shell particles obtained by homogeneous coprecipitation

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this