Exchange-coupled hard magnetic Fe-Co/CoPt nanocomposite films fabricated by electro-infiltration
Exchange-coupled hard magnetic Fe-Co/CoPt nanocomposite films fabricated by electro-infiltration
复制标题
电渗透法制备交换耦合硬磁 Fe-Co/CoPt 纳米复合薄膜
DOI：
10.1063/1.4976951
复制
发表时间：
2017
期刊：
影响因子：
1.6
通讯作者：
D. Arnold
中科院分区：
文献类型：
--
作者：
Xiao Wen;J. Andrew;D. Arnold
本文介绍了一种潜在可扩展的电渗透工艺来生产交换耦合硬磁纳米复合薄膜。 Fe-Co/CoPt 纳米复合薄膜是通过将 CoFe2O4 纳米颗粒沉积到 Si 基底上，然后电镀 CoPt 来制备的。随后将样品在 H2 下退火，将 CoFe2O4 还原为软磁 Fe-Co，并在 CoPt 中诱导 L10 有序化。所得薄膜表现出0.97 T饱和磁化强度、0.70 T剩磁、127 kA/m矫顽力和21.8 kJ/m3最大能量密度。一阶反转曲线（FORC）分析和δM图用于证明软磁相和硬磁相之间的交换耦合。本文介绍了一种潜在可扩展的电渗透工艺来生产交换耦合硬磁纳米复合薄膜。 Fe-Co/CoPt 纳米复合薄膜是通过将 CoFe2O4 纳米颗粒沉积到 Si 基底上，然后电镀 CoPt 来制备的。随后将样品在 H2 下退火，将 CoFe2O4 还原为软磁 Fe-Co，并在 CoPt 中诱导 L10 有序化。所得薄膜表现出0.97 T饱和磁化强度、0.70 T剩磁、127 kA/m矫顽力和21.8 kJ/m3最大能量密度。一阶反转曲线 (FORC) 分析和 δM 图用于证明软磁相和硬磁相之间的交换耦合。
This paper introduces a potentially scalable electro-infiltration process to produce exchange-coupled hard magnetic nanocomposite thin films. Fe-Co/CoPt nanocomposite films are fabricated by deposition of CoFe2O4 nanoparticles onto Si substrate, followed by electroplating of CoPt. Samples are subsequently annealed under H2 to reduce the CoFe2O4 to magnetically soft Fe-Co and also induce L10 ordering in the CoPt. Resultant films exhibit 0.97 T saturation magnetization, 0.70 T remanent magnetization, 127 kA/m coercivity and 21.8 kJ/m3 maximum energy density. First order reversal curve (FORC) analysis and δM plot are used to prove the exchange coupling between soft and hard magnetic phases.This paper introduces a potentially scalable electro-infiltration process to produce exchange-coupled hard magnetic nanocomposite thin films. Fe-Co/CoPt nanocomposite films are fabricated by deposition of CoFe2O4 nanoparticles onto Si substrate, followed by electroplating of CoPt. Samples are subsequently annealed under H2 to reduce the CoFe2O4 to magnetically soft Fe-Co and also induce L10 ordering in the CoPt. Resultant films exhibit 0.97 T saturation magnetization, 0.70 T remanent magnetization, 127 kA/m coercivity and 21.8 kJ/m3 maximum energy density. First order reversal curve (FORC) analysis and δM plot are used to prove the exchange coupling between soft and hard magnetic phases.