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復(fù)合添加劑對(duì)NiCoCuZn鐵氧體高頻磁導(dǎo)率色散行為的影響
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電子科技大學(xué)青年基金(L08010301JX0618, L08010301JX05013)；國(guó)家自然科學(xué)基金(60701016)


Effect of Composite Additives on Magnetic Permeability Dispersion Behaviors of NiCoCuZn Ferrites
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    摘要:

    用低溫?zé)Y(jié)法制備N(xiāo)iCoCuZn尖晶石鐵氧體，并研究了不同復(fù)合添加劑(Bi2O3-V2O5, Bi2O3-PbO)對(duì)其磁導(dǎo)率色散行為的影響。結(jié)果表明：在Bi2O3-V2O5復(fù)合摻雜時(shí)，晶粒尺寸隨Bi2O3含量的增大而增大。微觀結(jié)構(gòu)的變化導(dǎo)致了材料初始磁導(dǎo)率和截止頻率的變化。磁導(dǎo)率的色散機(jī)制主要以疇壁位移為主。然而在Bi2O3-PbO復(fù)合摻雜下，晶粒尺寸隨Bi2O3含量的減小而增大，材料的初始磁導(dǎo)率較Bi2O3-V2O5復(fù)合摻雜更小，截止頻率更高

    Abstract:

    NiCoCuZn spinel ferrites were prepared by a low-temperature sintering procedure with adding different composite additives, Bi2O3-V2O5 and Bi2O3-PbO. The effect of different composite additives on their magnetic permeability dispersion behaviors was investigated. Results show that for the samples with Bi2O3-V2O5 additive, the grain size increases with increasing of the Bi2O3 content in the composite additive. The microstructure change results in variations of initial magnetic permeability values and cutoff frequencies. Their permeability dispersion behaviors are ascribed to the domain wall movement mechanism. However, for the samples with Bi2O3-PbO additive, the grain size decreases with increasing of the Bi2O3 content in the composite additive. Compared with samples with Bi2O3-V2O5 additive, their initial magnetic permeability values are smaller, but the cutoff frequencies are higher

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韓滿貴,歐 雨,陳文兵,梁迪飛,周佩衡,鄧龍江.復(fù)合添加劑對(duì)NiCoCuZn鐵氧體高頻磁導(dǎo)率色散行為的影響[J].稀有金屬材料與工程,2010,39(4):618~622.[Han Mangui, Ou Yu, Chen Wenbing, Liang Difei, Zhou Peiheng, Deng Longjiang. Effect of Composite Additives on Magnetic Permeability Dispersion Behaviors of NiCoCuZn Ferrites[J]. Rare Metal Materials and Engineering,2010,39(4):618~622.]
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  • 收稿日期:2009-04-23
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