Thickness-dependent magnetic anisotropy in laminated Co1.1Fe1.9O4 ceramics

Ma，Rong1,2; Liu，Wenlong1; Yuan，Qibin1; Fang，Huajing3; Wang，Jiannong2; Wang，Hong1,4

2019-12-01

10.1016/j.ceramint.2019.08.089

CERAMICS INTERNATIONAL   影响因子和分区

0272-8842

1873-3956

The CoFeO ferrite with high magnetic anisotropy has great potential to be applied in sensors, transformers, and magnetic recording, etc. However, there are few researches about improving the magnetic anisotropy of CoFeO ferrite. In this work, the tape-casting method was adopted to fabricate laminated CoFeO ceramics. Their relative densities are all higher than 95%, and their magnetic anisotropies especially for ΔM (the percentage residual magnetization between in-plane and out-of-plane) and ΔH are considerably enhanced by this method comparing with that of the CoFeO ceramic prepared by traditional solid-state reaction. It is also found that the magnetic anisotropies of these laminated CoFeO ceramics are thickness-dependent probably due to the effect of grain size, that is, the magnetic anisotropies can be stronger when reducing the thickness of the sample. This provides a new approach to improve the magnetic anisotropy of ferrites for electronic devices applications.

Magnetic anisotropy Spinel ferrite Tape-casting method

SCI ; EI

英语

通讯

Research Grants Council of the Hong Kong SAR[N_HKUST605/16]

Materials Science

Materials Science, Ceramics

WOS:000493217800163

ELSEVIER SCI LTD

20193407348074

Ceramic materials ; Cobalt compounds ; Ferrite ; Iron compounds ; Laminating ; Magnetism ; Solid state reactions

Metallography:531.2 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Chemical Reactions:802.2 ; Ceramics:812.1 ; Processing of Plastics and Other Polymers:816.1

MATERIALS SCIENCE

2-s2.0-85070906308

Scopus

1.School of Electronic and Information EngineeringState Key Laboratory for Mechanical Behavior of MaterialsXi'an Jiaotong University,Xi'an,710049,China
2.Department of PhysicsThe Hong Kong University of Science and Technology,Clear Water Bay,Hong Kong
3.State Key Laboratory for Mechanical Behavior of MaterialsSchool of Material Science and EngineeringXi'an Jiaotong University,Xi'an,710049,China
4.Department of Materials Science and Engineering & Shenzhen Engineering Research Center for Novel Electronic Information Materials and DevicesSouthern University of Science and Technology Shenzhen,518055,China

Ma，Rong,Liu，Wenlong,Yuan，Qibin,et al. Thickness-dependent magnetic anisotropy in laminated Co1.1Fe1.9O4 ceramics[J]. CERAMICS INTERNATIONAL,2019,45(17):23734-23739.

Ma，Rong,Liu，Wenlong,Yuan，Qibin,Fang，Huajing,Wang，Jiannong,&Wang，Hong.(2019).Thickness-dependent magnetic anisotropy in laminated Co1.1Fe1.9O4 ceramics.CERAMICS INTERNATIONAL,45(17),23734-23739.

Ma，Rong,et al."Thickness-dependent magnetic anisotropy in laminated Co1.1Fe1.9O4 ceramics".CERAMICS INTERNATIONAL 45.17(2019):23734-23739.