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Title: Atomic scale understanding of magnetic properties in Ni{sub 50}Fe{sub 35}Co{sub 15}

Mössbauer spectroscopic studies have been carried out at different temperatures across ferromagnetic to paramagnetic transition in Ni{sub 50}Fe{sub 35}Co{sub 15} and the evolution of hyperfine parameters such as centre shift and magnetic hyperfine fields with temperature has been studied. Mössbauer spectrum obtained at 300 K in Ni{sub 50}Fe{sub 35}Co{sub 15} exhibiting fcc crystal structure is a six line pattern with the mean value of the hyperfine field close to 33 Tesla. Ferromagnetic to paramagnetic transition has been observed to occur in this system around 895 K matching with that of magnetization results. Debye temperature of this nickel rich alloy is deduced to be around 470 K matching with that of Ni. Effect of prolonged annealing at 750 K on the magnetic property is also investigated with respect to the thermal stability of the alloy.
Authors:
; ; ;  [1] ;  [2]
  1. Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam – 603102 (India)
  2. Materials Technology Division, Indira Gandhi Centre for Atomic Research, Kalpakkam – 603102 (India)
Publication Date:
OSTI Identifier:
22492426
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 6; Journal Issue: 2; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ABSORPTION SPECTROSCOPY; ANNEALING; COBALT ALLOYS; DEBYE TEMPERATURE; FCC LATTICES; FERROMAGNETIC MATERIALS; FERROMAGNETISM; HYPERFINE STRUCTURE; IRON ALLOYS; MAGNETIC PROPERTIES; MAGNETIZATION; MOESSBAUER EFFECT; NICKEL BASE ALLOYS; PARAMAGNETISM; PHASE TRANSFORMATIONS; TEMPERATURE DEPENDENCE