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Title: Mechanism of tailored magnetic anisotropy in amorphous Co{sub 68}Fe{sub 24}Zr{sub 8} thin films

The mechanism of tailored magnetic anisotropy in amorphous Co{sub 68}Fe{sub 24}Zr{sub 8} thin films was investigated by ferromagnetic resonance (FMR) on samples deposited without an applied magnetic field, with an out-of-plane field and an in-plane field. Analysis of FMR spectra profiles, high frequency susceptibility calculations, and statistical simulations using a distribution of local uniaxial magnetic anisotropy reveal the presence of atomic configurations with local uniaxial anisotropy, of which the direction can be tailored while the magnitude remains at an intrinsically constant value of 3.0(2) kJ/m{sup 3}. The in-plane growth field remarkably sharpens the anisotropy distribution and increases the sample homogeneity. The results benefit designing multilayer spintronic devices based on highly homogeneous amorphous layers with tailored magnetic anisotropy.
Authors:
; ;  [1] ;  [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [5]
  1. Fakultät für Physik and Center for Nanointegration Duisburg-Essen (CeNIDE), Universität Duisburg-Essen, 47057 Duisburg (Germany)
  2. (United States)
  3. (Germany)
  4. Department of Physics, Persian Gulf University, Bushehr 75169 (Iran, Islamic Republic of)
  5. Department of Physics and Astronomy, Uppsala University, Box 516 SE-75120 Uppsala (Sweden)
Publication Date:
OSTI Identifier:
22283126
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 7; 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; AMORPHOUS STATE; ANISOTROPY; COBALT BASE ALLOYS; COMPUTERIZED SIMULATION; ENERGY SPECTRA; FERROMAGNETIC RESONANCE; IRON ALLOYS; LAYERS; MAGNETIC FIELDS; THIN FILMS; ZIRCONIUM ALLOYS