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Title: Magnetic properties of single-phase MnBi grown from MnBi{sub 49} melt

The single-phase NiAs-type MnBi, embedded in Bi matrix, was grown from homogeneous MnBi{sub 49} melt at low temperatures to prevent the formation of Mn{sub 1.08}Bi. An abrupt magnetization change was observed at ∼240 K. The origin of this change was ascribed to the movement of the Mn atoms between the regular sites and the interstitial sites in the MnBi lattices. The splitting of the x-ray photoelectron lines of MnBi indicates the presence of two binding states of Mn atoms, one of which was ascribed to interstitial Mn atoms. A large coercivity up to 1.79 T at 400 K was observed in the as-grown bulk isotropic MnBi alloys.
Authors:
; ; ; ;  [1] ;  [2] ;  [3]
  1. Zhejiang Key Laboratory of Magnetic Materials, China Jiliang University, Hangzhou 310018 (China)
  2. Department of Physics, Hangzhou Normal University, Hangzhou 310036 (China)
  3. Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211 (China)
Publication Date:
OSTI Identifier:
22273753
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; 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; BISMUTH; COERCIVE FORCE; CRYSTAL GROWTH; CRYSTAL LATTICES; INTERMETALLIC COMPOUNDS; INTERSTITIALS; MAGNETIC PROPERTIES; MAGNETIZATION; MANGANESE; MATRIX MATERIALS; TEMPERATURE DEPENDENCE