...
首页> 外文期刊>IEEE Transactions on Magnetics >Pressure Dependence of Magnetoresistance for Fe/Cr Multilayers
【24h】

Pressure Dependence of Magnetoresistance for Fe/Cr Multilayers

机译:Fe / Cr多层膜的磁阻压力依赖性

获取原文
获取原文并翻译 | 示例
           

摘要

The magnetoresistance (MR) in Fe/Cr magnetic multilayers (MML) has been measured under high pressure up to 2.5 GPa. It is found that the spin-dependent scattering plays an important role in the pressure dependence of MR ratio. In the present work, for [Fe(20 A)/Cr(10 A)]_(20) MML with antiferromagnetic (AF) state, the pressure coefficient of saturation field H_(s) is (1/H_(s))((partial deriv)H_(s)/(partial deriv)P) velence 3.3 X 10~(-2) GPa~(-1) between 0.1 and 2.5 GPa. We found that the (1/|J|)((partial deriv)|J|/(partial deriv)P) for AF-Fe/Cr MML with polycrystalline structure is opposite in sign to that with epitaxial one. For [Fe(20 A)/Cr(22 A)]_(20) MML with ferromagnetic (F) state, anisotropic magnetoresistance (AMR) decreases with increasing pressure. It is suggested that the anisotropy constant decreases with weakening spin-orbit interaction at high pressure. At high field, the AMR is easily suppressed by applying pressure while the giant magnetoresistance around H_(s) increases slightly with increasing pressure for polycrystalline Fe/Cr MML.
机译:已在高达2.5 GPa的高压下测量了Fe / Cr磁性多层(MML)中的磁阻(MR)。发现自旋依赖性散射在MR比的压力依赖性中起重要作用。在目前的工作中,对于具有反铁磁(AF)状态的[Fe(20 A)/ Cr(10 A)] _(20)MML,饱和场的压力系数H_(s)为(1 / H_(s)) ((偏导数)H_(s)/(偏导数)P)范围在0.1至2.5 GPa之间的3.3 X 10〜(-2)GPa〜(-1)。我们发现具有多晶结构的AF-Fe / Cr MML的(1 / | J |)((偏导数| J | /(偏导数)P)在符号上与外延的相反。对于具有铁磁(F)状态的[Fe(20 A)/ Cr(22 A)] _(20)MML,各向异性磁阻(AMR)随着压力的增加而降低。建议在高压下各向异性常数随着自旋轨道相互作用的减弱而减小。在高磁场下,通过施加压力很容易抑制AMR,而对于多晶Fe / Cr MML,H_(s)周围的巨大磁阻随压力的增加而略有增加。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号