Reduction and control of permalloy thin film damping factor under microwave irradiation
作者: S. AzadianM.M. TehranchiS. Morteza MohseniS. Majid Mohseni
作者单位: 1Laser and Plasma Research Institute, Shahid Beheshti University, G. C., Evin, Tehran, 19839, Iran
2Faculty of Physics, Shahid Beheshti University, G. C., Evin, Tehran, 19839, Iran
刊名: Journal of Alloys and Compounds, 2017, Vol.723 , pp.960-966
来源数据库: Elsevier Journal
DOI: 10.1016/j.jallcom.2017.06.331
关键词: MagnonicsFerromagnetic resonanceMagnetization dynamicSpin wavesGilbert damping factorMicrowave
原始语种摘要: Abstract(#br)Understand and control of the Gilbert damping, a fundamentally important magnetodynamic characteristic of magnetic materials is crucial for magnonics and high frequency applications. In this paper, we demonstrate the microwave irradiation as an easy and effective technique to control and reduce the damping factor of permalloy (Ni80Fe20) thin films deposited on SiO2 substrate. Based on different irradiation times, damping decreases by ∼16% in a short interval time of few minutes and increases within longer irradiation times. We found that within such short irradiation time, before significant changes occur in its structure, determined by XRD and probed by SEM, AFM, and conductivity measurements, the major influence on the damping factor is the “aspect” of the surface of the...
全文获取路径: Elsevier  (合作)
影响因子:2.39 (2012)

  • factor 因素
  • microwave 微波
  • Reduction 还原
  • damping 阻尼
  • permalloy 坡莫合金
  • irradiation 照射
  • control 控制
  • under 在下