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Title: Observation of three crystalline layers in hydrothermally grown BiFeO{sub 3} thick films

We report the observation of three different crystalline layers in hydrothermally grown BiFeO{sub 3} (BFO) thick films on SrRuO{sub 3}/SrTiO{sub 3} substrates. High-resolution X-ray diffraction and transmission electron microcopy results suggest that compressively strained, partially relaxed epitaxial layers, and a mixture of polycrystalline and amorphous BFO layers, were successively formed from the bottom to the top of the films. The resistance and capacitance of the mixed layer were significantly lower than those of the epitaxial layers. The atomic concentrations of Bi and Fe in the mixed layer were fluctuating for each point. Based on the observed three crystalline layers, we have discussed the growth mechanism and the leakage current of hydrothermally grown BFO thick films.
Authors:
; ;  [1] ; ;  [2]
  1. Department of Physics, Inha University, Incheon 402-751 (Korea, Republic of)
  2. Department of Physics, Hallym University, Gangwondo 200-702 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22402671
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 19; 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; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CAPACITANCE; CONCENTRATION RATIO; EPITAXY; FILMS; LAYERS; LEAKAGE CURRENT; MIXTURES; POLYCRYSTALS; RESOLUTION; STRAINS; STRONTIUM TITANATES; SUBSTRATES; X-RAY DIFFRACTION