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Title: Textured metastable VO{sub 2} (B) thin films on SrTiO{sub 3} substrates with significantly enhanced conductivity

Textured metastable VO{sub 2} (B) thin films with a layered structure were grown on SrTiO{sub 3} (001) by pulsed laser deposition. The X-ray diffraction and transmission electron microscopy results indicate that VO{sub 2} (B) films exhibit c-axis out-of-plane, while the films have 4 possible in-plane matching relations. In addition, a small amount of VO{sub 2} (M) phase can co-grow in the VO{sub 2} (B) phase when the film thickness exceeds a threshold. The thick VO{sub 2} films on STO exhibit a sharp metal-insulator transition with an increase of electrical conductivity in two orders of magnitude. This study may provide an alternative approach to enhance the performance of insulating VO{sub 2} (B) based batteries with increased electrical conductivity by incorporating VO{sub 2} (M) phase in the VO{sub 2} (B) phase layered network.
Authors:
 [1] ;  [2] ; ;  [3] ; ; ;  [1]
  1. Department of Electrical and Computer Engineering, Texas A and M University, College Station, Texas 77843 (United States)
  2. (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
  3. Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
Publication Date:
OSTI Identifier:
22283114
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 7; 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; CRYSTAL STRUCTURE; ELECTRIC CONDUCTIVITY; ENERGY BEAM DEPOSITION; LASER RADIATION; PULSED IRRADIATION; STRONTIUM TITANATES; SUBSTRATES; TEXTURE; THIN FILMS; TRANSMISSION ELECTRON MICROSCOPY; VANADIUM OXIDES; X-RAY DIFFRACTION