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淬態(tài)非晶FeNiCrSiB/Cu/FeNiCrSiB三明治薄帶的巨磁阻抗特性
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臺州學院物理與電子工程學院,臺州學院物理與電子工程學院,臺州學院物理與電子工程學院,臺州學院物理與電子工程學院

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*浙江省自然科學(Y4110547)；臺州市科技計劃項目(14GY02)


Giant Magneto-Impedance Properties of Quenched Amorphous FeNiCrSiB/Cu/FeNiCrSiB Sandwiched Ribbon
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School of physics and Electronic Engineering,Taizhou University,School of physics and Electronic Engineering,Taizhou University,School of physics and Electronic Engineering,Taizhou University,School of physics and Electronic Engineering,Taizhou University

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    摘要:

    研究了淬態(tài)非晶FeNiCrSiB/Cu/FeNiCrSiB三明治薄帶樣品的巨磁阻抗(GMI)特性。該三明治薄帶具有十分顯著的GMI效應,在0.5 MHz頻率下其縱橫向GMI比分別達到282%和408%。磁疇結(jié)構(gòu)觀察表明,三明治薄帶由于橫向磁路閉合,使得沿帶軸方向主導的180°條形疇向橫向產(chǎn)生約10°偏轉(zhuǎn)。分析了三明治薄帶磁電阻、磁感抗、有效磁導率的變化與GMI效應的關(guān)系,發(fā)現(xiàn)在40 Hz~10 MHz測試頻率范圍內(nèi),樣品的磁感抗部分對GMI效應起主導作用,這緣于三明治結(jié)構(gòu)降低了損耗,顯著提高了材料有效磁導率、增強了磁電感效應,受控于三明治薄帶有效磁導率變化的磁電感效應是其GMI效應的主要特征。

    Abstract:

    The giant magneto-impedance (GMI) properties of FeNiCrSiB/Cu/FeNiCrSiB sandwiched ribbon were studied. The obtained results showed that the sandwiched ribbon had remarkable GMI effects. The maximum values of the longitudinal and transverse GMI ratios were 282% and 408%，respectively，at the frequency of 0.5MHz. Observations indicated the orientation of 180° stripe domains tended to the ribbon axis. Due to the transverse closed magnetic flux loop of sandwiched ribbon, a 10 degrees deflection of stripe domains to the transverse direction is observed.Besides, the relationship between magneto-resistance, magneto-inductance, effective permeability and GMI were analyzed: at the frequency range of 40 Hz~10 MHz, the magneto-inductance played a decisive role.It is attributed to the special sandwiched structure, which reduced energy losses, improved effective permeability significantly and then enhanced magneto-inductance effect.The magneto-inductance effect controlled by effective permeability was the principal features of the GMI.

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邵先亦,陳衛(wèi)平,鐘彬荃,謝佳文.淬態(tài)非晶FeNiCrSiB/Cu/FeNiCrSiB三明治薄帶的巨磁阻抗特性[J].稀有金屬材料與工程,2018,47(4):1160~1165.[Shao Xianyi, Chen Weiping, Zhong Binquan, Xie Jiawen. Giant Magneto-Impedance Properties of Quenched Amorphous FeNiCrSiB/Cu/FeNiCrSiB Sandwiched Ribbon[J]. Rare Metal Materials and Engineering,2018,47(4):1160~1165.]
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  • 收稿日期:2016-04-09
  • 最后修改日期:2016-07-11
  • 錄用日期:2016-08-17
  • 在線發(fā)布日期: 2018-05-31
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