Influence of Microstructure on the DC-Bias-Superposition Characteristics of NiZn Ferrites

The influence of microstructure on the magnetic properties, especially the dc-bias-superposition characteristics, of NiZn ferrites has been investigated. The value of saturation magnetic flux density ( B s ) first increased and then changed little with variation of the sintered density, and showed l...

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Published in:IEEE transactions on magnetics 2011-10, Vol.47 (10), p.4332-4335
Main Authors: Tang, Xiaoli, Zhang, Huaiwu, Su, Hua, Zhong, Zhiyong, Bai, Feiming
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
DC-bias-superposition
Exact sciences and technology
ferrite
Ferrites
Grain size
Magnetic domains
Magnetic properties
Materials science
Microstructure
Other topics in materials science
Permeability
Physics
Saturation magnetization
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cited_by cdi_FETCH-LOGICAL-c295t-15e197a1260e000926bcfcb413232139bb891fbcc893c3eb0751e477d4f29ae13
cites cdi_FETCH-LOGICAL-c295t-15e197a1260e000926bcfcb413232139bb891fbcc893c3eb0751e477d4f29ae13
container_end_page 4335
container_issue 10
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container_title IEEE transactions on magnetics
container_volume 47
creator Tang, Xiaoli
Zhang, Huaiwu
Su, Hua
Zhong, Zhiyong
Bai, Feiming
description The influence of microstructure on the magnetic properties, especially the dc-bias-superposition characteristics, of NiZn ferrites has been investigated. The value of saturation magnetic flux density ( B s ) first increased and then changed little with variation of the sintered density, and showed little relation to the microstructure. Coercivity ( H c ) decreased continuously with increasing average grain size. Δ B ( B s -remanence) first increased with increasing average grain size, but then gradually decreased when abnormal grain growth prevailed. The incremental permeability (permeability with magnetic field superposition) was influenced by both Δ B and H c . A sample with higher Δ B and H c favored the attainment of a higher incremental permeability. The Q -factor was mainly determined by the sintered density and microstructure. To sum up, a uniform and dense microstructure with relatively small average grain size is favorable for obtaining better dc-bias-superposition characteristics, including permeability and Q -factor.
doi_str_mv 10.1109/TMAG.2011.2157307
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The value of saturation magnetic flux density ( B s ) first increased and then changed little with variation of the sintered density, and showed little relation to the microstructure. Coercivity ( H c ) decreased continuously with increasing average grain size. Δ B ( B s -remanence) first increased with increasing average grain size, but then gradually decreased when abnormal grain growth prevailed. The incremental permeability (permeability with magnetic field superposition) was influenced by both Δ B and H c . A sample with higher Δ B and H c favored the attainment of a higher incremental permeability. The Q -factor was mainly determined by the sintered density and microstructure. 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subjects Cross-disciplinary physics: materials science
rheology
DC-bias-superposition
Exact sciences and technology
ferrite
Ferrites
Grain size
Magnetic domains
Magnetic properties
Materials science
Microstructure
Other topics in materials science
Permeability
Physics
Saturation magnetization
title Influence of Microstructure on the DC-Bias-Superposition Characteristics of NiZn Ferrites
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