吉林大学学报(理学版)

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Fe3N纳米晶薄膜退火过程的结构演变及其磁性

王丽丽, 闫岩, 安涛, 卢歆, 谭芳, 王立杰, 邹林   

  1. 长春大学 理学院, 长春 130022
  • 收稿日期:2012-11-26 出版日期:2013-11-26 发布日期:2013-11-21
  • 通讯作者: 王丽丽 E-mail:llwang163@163.com

Investigation on Structure and Magnetic Properties of Nanocrystal Fe3N Thin Films

WANG Lili, YAN Yan, AN Tao, LU Xin, TAN Fang, WANG Lijie, ZOU Lin   

  1. College of Science, Changchun University, Changchun 130022, China
  • Received:2012-11-26 Online:2013-11-26 Published:2013-11-21
  • Contact: WANG Lili E-mail:llwang163@163.com

摘要:

采用直流磁控溅射方法, 在氮气分压为10%的条件下获得了单相纳米晶ε-Fe3N磁性薄膜, 先将薄膜样品在真空中分别于500,600,700,800 ℃退火, 再利用X射线衍射(XRD)和振动样品磁强计(VSM)表征不同退火温度样品的结构和磁学性能. 结果表明: ε-Fe3N样品在小于600 ℃可保持结构稳定; 在退火过程中, ε-Fe3N薄膜的比饱和磁化强度变化较小; 矫顽力先减小后增加; 经过500 ℃退火的ε-Fe3N样品软磁性能最佳.

关键词: &epsilon, -Fe3N薄膜, 晶格畸变, 磁性

Abstract:

The nanocrystal ε-Fe3N thin films were deposited at a N2 pressure of 10% by DC magnetron sputtering. The films were annealed at different temperatures of 500,600,700,800 ℃ in vaccum. The structure and magnetic properties of the films were characterized via an Xray diffractometer (XRD) and vibrating sample magnetometer (VSM). The results show that the structures of ε-Fe3N films were still stable under the annealing temperature of 600 ℃. The saturation magnetization (Ms) of the films  did not change significantly. The coercivity of the films decreased at first and then increased. The soft magnetic properties were the most optimal when the ε-Fe3N films were heattreated at 500 ℃.

Key words: &epsilon, -Fe3N thin film; lattice distortion; magnetic property

中图分类号: 

  • O484.1