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Title: Tuning of the spin pumping in yttrium iron garnet/Au bilayer system by fast thermal treatment

In this Letter, we investigated the influence of the fast thermal treatment on the spin pumping in ferromagnetic insulator yttrium iron garnet (YIG)/normal metal Au bilayer system. The YIG/Au bilayer thin films were treated by fast annealing process with different temperatures from 0 to 800 °C. The spin pumping was studied using ferromagnetic resonance. The surface evolution was investigated using a high resolution scanning microscopy and an atomic force microscopy. A strong thermal related spin pumping in YIG/Au bilayer system has been revealed. It was found that the spin pumping process can be enhanced by using fast thermal treatment due to the thermal modifications of the Au surface. The effective spin-mixing conductance of the fast thermal treated YIG/Au bilayer has been obtained.
Authors:
; ; ; ;  [1] ;  [2] ;  [3]
  1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology, Chengdu 610054 (China)
  2. Department of Electrical and Computer Engineering, University of Delaware, Newark, Delaware 19716 (United States)
  3. Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716 (United States)
Publication Date:
OSTI Identifier:
22273820
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 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; ANNEALING; ATOMIC FORCE MICROSCOPY; ELECTRIC CONDUCTIVITY; FERRITE GARNETS; FERROMAGNETIC RESONANCE; GOLD; INTERFACES; LAYERS; PUMPING; SPIN; SURFACES; TEMPERATURE DEPENDENCE; THIN FILMS; YTTRIUM COMPOUNDS