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Title: Tuning of the microwave magnetization dynamics in CoZr-based thin films by Nd-doping

To enhance the damping of microwave magnetization dynamics, we investigate the effect of Nd-doping (0–3.0 at. %) into CoZr thin films. The saturation magnetization decreases with Nd-doping. The coercivities generally decrease in the case of 1.5 at. % Nd-doping, while increase in the case of 3.0 at. % Nd-doping. The magnetization dynamics is characterized with the permeability spectra, which are determined by the ferromagnetic resonance behavior at the microwave range. The permeability spectra are analyzed through the fittings with Landau-Lifshitz-Gilbert equation. From the fittings, both the dynamic magnetic anisotropy field and the damping factor increase, due to the enhanced spin-orbital coupling by Nd-doping.
Authors:
; ;  [1] ;  [2] ;  [3] ;  [4]
  1. School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094 (China)
  2. Physics Department, Southeast Univerisity, Nanjing 211189 (China)
  3. School of Physics, Nanjing University, Nanjing 210093 (China)
  4. College of Physics, Qingdao University, Qingdao 266071 (China)
Publication Date:
OSTI Identifier:
22403030
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; COBALT; COBALT BASE ALLOYS; COERCIVE FORCE; CONCENTRATION RATIO; DAMPING; DIFFERENTIAL EQUATIONS; FERROMAGNETIC RESONANCE; L-S COUPLING; MAGNETIZATION; MICROWAVE RADIATION; NEODYMIUM ADDITIONS; PERMEABILITY; THIN FILMS; ZIRCONIUM BASE ALLOYS