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Title: Nano-magnetism of magnetostriction in Fe{sub 35}Co{sub 65}

The nature of the large magnetostriction in body-centered Fe-based solid solutions has been widely discussed in the literature. Here, we use a combination of magnetostriction, magnetization, torque, and transmission electron microscopy measurements of specially annealed Co{sub 65}Fe{sub 35} to show that the magnetostriction is caused by coherent uniaxial nano-precipitates. We show further that these nano-precipitates lower the magnetocrystalline anisotropy in these alloys to K{sub 1} = −2.16 × 10{sup 4} J/m{sup 3}.
Authors:
 [1] ; ;  [2] ;  [3]
  1. Department of Physics, Morgan State University, Baltimore, Maryland 21251 (United States)
  2. Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742 (United States)
  3. Department of Materials Science and Engineering, University of California, Berkeley, California 94720 (United States)
Publication Date:
OSTI Identifier:
22283074
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 9; 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; 77 NANOSCIENCE AND NANOTECHNOLOGY; ANISOTROPY; ANNEALING; BCC LATTICES; COBALT ALLOYS; CRYSTALS; INTERMETALLIC COMPOUNDS; IRON ALLOYS; MAGNETISM; MAGNETIZATION; MAGNETOSTRICTION; NANOSTRUCTURES; PRECIPITATION; SOLID SOLUTIONS; TORQUE; TRANSMISSION ELECTRON MICROSCOPY