Scholarlink

<p>Flexible spintronics has opened avenues to promising devices and applications in the field of wearable electronics. For miniaturized strain sensors exploiting the spintronic function, the magnetoelasticity linking magnetism and lattice distortion is a vital property. Here we report the demonstration that the magnetoelastic properties of Fe<sub>4</sub>N can be significantly varied by partially replacing Fe with Co or Mn. The high quality Fe<sub>4</sub>N film exhibits large negative magnetostriction along the [100] direction (<i>λ</i><sub>100</sub>) of −121 ppm while Fe<sub>2.3</sub>Co<sub>1.7</sub>N shows <i>λ</i><sub>100</sub> of + 46 ppm. The strong correlation between <i>λ</i><sub>100</sub> and magnetic damping (<i>α</i>) is found. The enhanced extrinsic term of <i>α</i> is attributable to the large two magnon scattering coming from the large magnetostriction. In addition, the density of states at the Fermi level plays a primal role to determine both <i>λ</i><sub>100</sub> and the intrinsic term of <i>α</i>. Thanks to the giant tunability and the bipolarity of magnetoelasticity, magnetic nitrides are candidate materials for high-sensitive spintronic strain sensors.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Giant tunability of magnetoelasticity in Fe4N system as a platform to unveil correlation between magnetostriction and magnetic damping

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年3月26日

查看全文
  • Keita Ito,
  • Ivan Kurniawan,
  • Yusuke Shimada,
  • Yoshio Miura,
  • Yasushi Endo,
  • Takeshi Seki

摘要

Flexible spintronics has opened avenues to promising devices and applications in the field of wearable electronics. For miniaturized strain sensors exploiting the spintronic function, the magnetoelasticity linking magnetism and lattice distortion is a vital property. Here we report the demonstration that the magnetoelastic properties of Fe4N can be significantly varied by partially replacing Fe with Co or Mn. The high quality Fe4N film exhibits large negative magnetostriction along the [100] direction (λ100) of −121 ppm while Fe2.3Co1.7N shows λ100 of + 46 ppm. The strong correlation between λ100 and magnetic damping (α) is found. The enhanced extrinsic term of α is attributable to the large two magnon scattering coming from the large magnetostriction. In addition, the density of states at the Fermi level plays a primal role to determine both λ100 and the intrinsic term of α. Thanks to the giant tunability and the bipolarity of magnetoelasticity, magnetic nitrides are candidate materials for high-sensitive spintronic strain sensors.