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Title: Looking for footprint of bulk metallic glass in electronic and phonon heat capacities of Cu{sub 55}Hf{sub 45−x}Ti{sub x} alloys

We report on the heat capacity investigation of Cu{sub 55}Hf{sub 45−x}Ti{sub x} metallic glasses. The most appropriate procedure to estimate low temperature electronic and phonon contributions has been determined. Both contributions exhibit monotonous Ti concentration dependence, demonstrating that there is no relation of either the electron density of states at the Fermi level or the Debye temperature to the increased glass forming ability in the Ti concentration range x = 15–30. The thermodynamic parameters (e.g., reduced glass temperature) remain better indicators in assessing the best composition for bulk metallic glass formation.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ; ;  [5] ;  [6] ;  [7] ;  [8] ;  [9]
  1. Institut Néel, Université Grenoble Alpes, F-38042 Grenoble (France)
  2. (France)
  3. CNRS, Institut Néel, F-38042 Grenoble (France)
  4. (Croatia)
  5. Institute of Physics, Bijenička c. 46, P.O. Box 304, HR-10001 Zagreb (Croatia)
  6. Department of Physics, Trg Lj. Gaja 6, HR-31000 Osijek (Croatia)
  7. Department of Physics, Faculty of Science, Bijenička c. 32, HR-10000 Zagreb (Croatia)
  8. Institute for Materials Research-UNAM, Ciudad Universitaria Coyoacan, C.P. 04510 Mexico D.F. (Mexico)
  9. Department of Engineering Materials, University of Sheffield, Sheffield S1 3JD (United Kingdom)
Publication Date:
OSTI Identifier:
22267704
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 17; 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; ABUNDANCE; CONCENTRATION RATIO; DEBYE TEMPERATURE; ELECTRON DENSITY; FERMI LEVEL; METALLIC GLASSES; PHONONS; SPECIFIC HEAT