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Self-biased magnetoelectric effect in (Pb, Zr)TiO3/metglas laminates by annealing method

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  • Materials Science
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Science Bulletin

Abstract

FeBSiC metglas was annealed at an optimized condition (350 °C, 5 min) to achieve the mixed phases with pristine amorphous phase and crystallization phase. With such annealed metglas, a self-biased magnetoelectric (ME) laminate of metglas/Pb(Zr, Ti)O3/metglas was fabricated. Without any external magnetic field, the composite exhibits the ME coefficient α E31 of 103 mV/(cm Oe) at 1 kHz and 15.5 V/(cm Oe) at electromechanical resonance frequency. The induced ME voltage shows a good linear relation to the applied AC magnetic field with amplitude as low as 10−7 T at 1 kHz. It is expected that such self-biased ME composites provide a practical application of economical and compact magnetic sensors.

摘要

由磁致伸缩材料/压电材料复合而成的磁电复合材料对磁场具有较高的灵敏度,且具有易于小型化及可在室温工作的特点,因此受到广泛关注。已有研究表明磁电复合材料的磁电耦合系数(α E)与磁致伸缩材料的压磁系数(d m)成正比,而磁致伸缩材料一般需要在相应的外加直流偏置磁场(H dc)下才能达到最优的压磁系数,当外磁场为零时,压磁系数也几乎为零。因此磁电材料需要在一定外加磁场下工作,这给器件集成和小型化带来了困难。若能取消外磁场,制备出具有自偏置场的磁致伸缩材料,对磁电复合材料的实际应用具有重大意义。非晶态合金(metglas)可在较小偏置场下达到压磁系数的最优值。相关研究表明,对metglas进行磁场退火处理可在其内部形成结晶相,并出现剩余磁化强度。本文选取FeBSiC非晶态合金为研究对象,通过优化磁场退火条件,使退火处理后的FeBSiC合金同时具备自偏置特性和磁致伸缩能力,并利用该合金与锆钛酸铅陶瓷组成叠层结构磁电复合材料。磁电测试结果显示,在外界偏置磁场H dc为零的情况下,该磁电复合材料磁电耦合系数在1 kHz下达到103 mV/(cm Oe),而机电谐振频率下可达15.5 V/(cm Oe),具有明显的自偏置特性。

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (51402164 and 51572142).

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Authors and Affiliations

  1. School of Materials Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing, 100084, China

    Jiannan Ma, Chengzhou Xin, Jing Ma, Qiming Zhang & Cewen Nan

  2. Department of Electrical Engineering and Materials Research Institute, Pennsylvania State University, University Park, PA, 16802, USA

    Qiming Zhang

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  1. Jiannan Ma
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  2. Chengzhou Xin
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  3. Jing Ma
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Correspondence to Jing Ma.

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Ma, J., Xin, C., Ma, J. et al. Self-biased magnetoelectric effect in (Pb, Zr)TiO3/metglas laminates by annealing method. Sci. Bull. 61, 378–382 (2016). https://doi.org/10.1007/s11434-016-1002-5

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  • DOI: https://doi.org/10.1007/s11434-016-1002-5

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