Effects of iron deficiency on anisotropy and ferromagnetic resonance linewidth in Bi-doped LiZn ferrite

Xiaona Jiang; Wei Wang; Zhong Yu; Ke Sun; Zhongwen Lan; Xinran Zhang; Vincent G. Harris

doi:10.1063/1.4976948

AIP Advances (May 2017)

Effects of iron deficiency on anisotropy and ferromagnetic resonance linewidth in Bi-doped LiZn ferrite

Xiaona Jiang,
Wei Wang,
Zhong Yu,
Ke Sun,
Zhongwen Lan,
Xinran Zhang,
Vincent G. Harris

Affiliations

Xiaona Jiang: State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
Wei Wang: State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
Zhong Yu: State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
Ke Sun: State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
Zhongwen Lan: State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
Xinran Zhang: State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
Vincent G. Harris: Department of Electrical and Computer Engineering, Northeastern University, Boston, Massachusetts 02115, USA

DOI: https://doi.org/10.1063/1.4976948
Journal volume & issue: Vol. 7, no. 5
pp. 056106 – 056106-5

Abstract

Read online

Bi-doped LiZn ferrites with different iron deficiencies were fabricated by a conventional ceramic method. Anisotropy constant (K1) was calculated and ferromagnetic resonance (FMR) linewidth (ΔH) was investigated. Crystalline anisotropy broadening linewidth (ΔHa) and porosity broadening linewidth (ΔHp) were derived by an approximate calculation based on dipolar narrowing theory, which play a significant role in contributions to FMR linewidth and occupy more than 90 % of ΔH. Physical and static magnetic properties of LiZn ferrite with iron deficiency are presented, which supports a decline in linewidths with increasing iron deficiency. Iron deficiency makes K1, ΔHa and ΔHp reduce. The results also show that ΔHp is the majority of contributions to ΔH in Bi-doped LiZn ferrite and densification is an effective method to decrease ΔH.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

About the journal