TY - JOUR
T1 - Addition of a minor amount of Co2Y effects on the microstructure, magnetic properties and DC-bias superposition characteristics of low-fire NiCuZn ferrites
AU - Hsiang, Hsing I.
AU - Hsi, Chi Shiung
AU - Lin, Ruei Lin
AU - Chiang, Chung Yen
N1 - Funding Information:
This work was financially co-sponsored by the National Science Council of the Republic of China (NSC 103-2622-E-006-003-CC2 and 101-2221-E-006-125-MY3 ).
Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.
PY - 2015/2/1
Y1 - 2015/2/1
N2 - The addition of a minor amount of Co2Y ferrites effects on the microstructure, magnetic properties and DC-bias superposition characteristics of NiCuZn ferrites were investigated in this study. It was observed that Co2Y can effectively act as the inert second phase to reduce grain mobility using the Zener pinning effect during sintering, and hence impede grain growth. The initial permeability of NiCuZn ferrites decreased, but the onset frequency for the increase in imaginary permeability as well as the resonance frequency both increased with increasing Co2Y addition due to the grain size effects. The figure of merit for NiCuZn ferrites for high frequency applications, (μi - 1) fr, and DC-bias-superposition characteristics can be effectively promoted by increasing Co2Y addition. A suitable compromise between the initial permeability and DC superposition characteristic can also be obtained by adding a proper amount of Co2Y to adjust the grain size.
AB - The addition of a minor amount of Co2Y ferrites effects on the microstructure, magnetic properties and DC-bias superposition characteristics of NiCuZn ferrites were investigated in this study. It was observed that Co2Y can effectively act as the inert second phase to reduce grain mobility using the Zener pinning effect during sintering, and hence impede grain growth. The initial permeability of NiCuZn ferrites decreased, but the onset frequency for the increase in imaginary permeability as well as the resonance frequency both increased with increasing Co2Y addition due to the grain size effects. The figure of merit for NiCuZn ferrites for high frequency applications, (μi - 1) fr, and DC-bias-superposition characteristics can be effectively promoted by increasing Co2Y addition. A suitable compromise between the initial permeability and DC superposition characteristic can also be obtained by adding a proper amount of Co2Y to adjust the grain size.
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U2 - 10.1016/j.matchemphys.2014.11.069
DO - 10.1016/j.matchemphys.2014.11.069
M3 - Article
AN - SCOPUS:84926136488
VL - 151
SP - 295
EP - 300
JO - Materials Chemistry and Physics
JF - Materials Chemistry and Physics
SN - 0254-0584
ER -