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Title: Fabrication and characterization of Co{sub 40}Fe{sub 22}Ta{sub 8-x}Y{sub x}B{sub 30} (x = 0, 2.5, 4, 6, and 8) metallic glasses with high thermal stability and good soft magnetic properties

Atomic structure and thermal behavior of Co{sub 40}Fe{sub 22}Ta{sub 8-x}Y{sub x}B{sub 30} (x = 0, 2.5, 4, 6, and 8) metallic glasses with good soft magnetic properties have been investigated by high-energy synchrotron X-ray diffraction and differential scanning calorimeter, respectively. It has been shown that the extension of the supercooled liquid region first increases and reaches a large value of 95 K and subsequently decreases as a function of Y content. Analysis of the structure factors and pair correlation functions in the reciprocal-space and real-space have indicated that the addition of Y noticeably changes the atomic structure and reduces the degree of the medium-range order. Magnetic measurements have implied that the introduction of Y enhances both saturation magnetization and Curie temperatures of the ribbons, while keeping their coercivity very small. The underlying mechanisms for changes in the atomic structure, improving the thermal stability and magnetic properties upon Y addition have been discussed.
Authors:
 [1] ;  [2] ;  [3] ;  [2] ;  [4]
  1. Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz (Iran, Islamic Republic of)
  2. IFW Dresden, Institute for Complex Materials, Helmholtzstr. 20, 01069 Dresden (Germany)
  3. Deutsches Elektronen-Synchrotron DESY, Photon Science, Notkestraße 85, 22603 Hamburg (Germany)
  4. (Germany)
Publication Date:
OSTI Identifier:
22402644
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 18; 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; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CALORIMETERS; CORRELATION FUNCTIONS; CURIE POINT; FABRICATION; LIQUIDS; MAGNETIC PROPERTIES; METALLIC GLASSES; STABILITY; STRUCTURE FACTORS; X-RAY DIFFRACTION