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Title: The multiferroic properties of polycrystalline Bi{sub 1−x}Y{sub x}FeO{sub 3} films

Polycrystalline Bi{sub 1−x}Y{sub x}FeO{sub 3} films with varying x from 0 to 0.30 were prepared by pulsed laser deposition on surface oxidized Si (100) substrates with LaNiO{sub 3} as buffer layer. The influence of Y doping on the structure, ferroelectric properties, and exchange bias have been systematically investigated. X-ray diffraction and Raman spectroscopy studies revealed the structural transition from rhombohedral R3c to orthorhombic Pn2{sub 1}a with increasing x above 0.10. The leakage current density of BiFeO{sub 3} has been effectively suppressed by Y doping, and well saturated P–E loops have been observed in Bi{sub 1−x}Y{sub x}FeO{sub 3} (0.01 ≤ x ≤ 0.07). Exchange bias field with a 3.6 nm thick NiFe layer increases with increasing x to 0.01, then decreases with further increasing x.
Authors:
 [1] ; ;  [2] ;  [3] ;  [4] ;  [1] ;  [5]
  1. Department of Physics, Southeast University, Nanjing 211189, China and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 210096 (China)
  2. National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093 (China)
  3. Department of Materials Science and Engineering, Nanjing University, Nanjing 210008 (China)
  4. Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, P.O. Box 510119, Dresden 01314 (Germany)
  5. (China)
Publication Date:
OSTI Identifier:
22273876
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 COMPOUNDS; CONCENTRATION RATIO; ENERGY BEAM DEPOSITION; FERRITES; FERROELECTRIC MATERIALS; LANTHANUM COMPOUNDS; LASER RADIATION; LAYERS; LEAKAGE CURRENT; NICKELATES; ORTHORHOMBIC LATTICES; POLYCRYSTALS; PULSED IRRADIATION; RAMAN SPECTROSCOPY; SUBSTRATES; SURFACES; THIN FILMS; TRIGONAL LATTICES; X-RAY DIFFRACTION; YTTRIUM COMPOUNDS