skip to main content

SciTech ConnectSciTech Connect

Title: Ferromagnetism and magneto-transport properties of Mn{sub 0.92}Ca{sub 0.08}As thin film grown on Al{sub 2}O{sub 3}(0001) substrate

The epitaxial Mn{sub 0.92}Ca{sub 0.08}As thin film was grown on Al{sub 2}O{sub 3}(0001) substrate by molecular beam epitaxy. The Curie temperature (T{sub C}) around 340 K was enhanced with the addition of Ca, compared to that of bulk MnAs (T{sub C} ∼ 318 K). The maxima magnetoresistance, ∼2.08% at 0.7 T, was observed near the critical magnetic transition temperature. Moreover, the giant magnetocaloric effect was found with the maximum magnetic entropy change, ∼200 J/kgK, around 330 K at 5 T.
Authors:
;  [1] ;  [2] ; ;  [1] ;  [3]
  1. Department of Physics, University of Ulsan, Ulsan 680-749 (Korea, Republic of)
  2. (Viet Nam)
  3. School of Materials Science and Engineering, China University of Geosciences, Beijing 100083 (China)
Publication Date:
OSTI Identifier:
22273768
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; ALUMINIUM OXIDES; CALCIUM COMPOUNDS; COMPARATIVE EVALUATIONS; CRYSTAL STRUCTURE; CURIE POINT; ENTROPY; FERROMAGNETISM; MAGNETIC PROPERTIES; MAGNETORESISTANCE; MANGANESE ARSENIDES; MOLECULAR BEAM EPITAXY; SUBSTRATES; TEMPERATURE DEPENDENCE; THIN FILMS