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基于银掺杂法的碲化钨磁阻材料制备及磁阻性能研究

曹明星 武彤 徐定华 贺建

曹明星,武彤,徐定华,等. 基于银掺杂法的碲化钨磁阻材料制备及磁阻性能研究[J]. 计量科学与技术,2022, 66(8): 50-56 doi: 10.12338/j.issn.2096-9015.2021.0624
引用本文: 曹明星,武彤,徐定华,等. 基于银掺杂法的碲化钨磁阻材料制备及磁阻性能研究[J]. 计量科学与技术,2022, 66(8): 50-56 doi: 10.12338/j.issn.2096-9015.2021.0624
CAO Mingxing, WU Tong, XU Dinghua, HE Jian. Preparation and Magnetoresistive Properties of Tungsten Telluride Magnetoresistive Materials Based on Silver Doping Method[J]. Metrology Science and Technology, 2022, 66(8): 50-56. doi: 10.12338/j.issn.2096-9015.2021.0624
Citation: CAO Mingxing, WU Tong, XU Dinghua, HE Jian. Preparation and Magnetoresistive Properties of Tungsten Telluride Magnetoresistive Materials Based on Silver Doping Method[J]. Metrology Science and Technology, 2022, 66(8): 50-56. doi: 10.12338/j.issn.2096-9015.2021.0624

基于银掺杂法的碲化钨磁阻材料制备及磁阻性能研究

doi: 10.12338/j.issn.2096-9015.2021.0624
基金项目: 国家市场监督管理总局质量技术监督能力提升专项(ANL1912)。
详细信息
    作者简介:

    曹明星(1994-),中国计量科学研究院助理工程师,研究方向:磁性材料、磁电阻材料、防伪技术等,邮箱:caomx@nim.ac.cn

    通讯作者:

    徐定华(1974-),中国计量科学研究院副研究员,研究方向:测试计量技术及仪器,邮箱:xudh@nim.ac.cn

Preparation and Magnetoresistive Properties of Tungsten Telluride Magnetoresistive Materials Based on Silver Doping Method

  • 摘要: 碲化钨磁阻材料具有优良的非饱和磁电阻效应,基于碲化钨磁阻材料的信息存储技术和磁传感器制造技术,代表了磁阻研究的重要方向。通过掺杂的方法可以改变材料的磁、电学性能,为了探究碲化钨(WTe2)能否通过银(Ag)掺杂法得到优异性能,详细介绍了如何选择掺杂方法,以及为何选择银作为掺杂元素。建立了一种温和制备大块体掺银碲化钨(WTe2/Ag)磁阻材料的方法,即新型的自助熔剂烧结法,制备了三种不同Ag掺杂量的WTe2/Ag典型材料,对其物相、价态、结构进行表征与评价,并对磁阻性能进行测试分析。研究结果表明:选择银掺杂法具有优异性,制备所得的WTe2/Ag材料不仅质量可靠,而且有效提升了磁电阻效应,使得磁电阻在测试最高值时的控制条件更易实现。测试得到的磁电阻在5 K、14 T时为502.3%,相比未掺杂时提高了50%,相比掺杂其他元素其磁电性能有极大提升,对电磁学器件的优化设计及实际应用具有积极的意义。
  • 图  1  所制备WTe2/Ag材料的测试方法

    Figure  1.  Testing method of the prepared WTe2/Ag materials

    图  2  材料晶体结构图

    Figure  2.  Crystal structure diagram of materials

    图  3  所制备WTe2/Ag材料的电阻率随磁场和温度的变化曲线

    Figure  3.  Variation curve of the resistivity of the prepared WTe2/Ag materials with magnetic field and temperature

    图  4  所制备WTe2/Ag材料的磁电阻随磁场和温度的变化曲线

    Figure  4.  Variation curve of the magnetoresistance of the prepared WTe2/Ag materials with magnetic field and temperature

    图  5  材料载流子运动受力图

    Figure  5.  Motion force diagram of the carrier of the material

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出版历程
  • 网络出版日期:  2022-04-22
  • 刊出日期:  2022-09-15

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