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Titolo:
Superconducting YBa2Cu3O7 films grown on TiO2 buffer layers derived from various processes
Autore:
Wu, KH; Lin, PI; Hsieh, CC; Liu, SJ; Juang, JY; Uen, TM; Lin, JY; Gou, YS;
Indirizzi:
Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 30050, Taiwan Natl Chiao Tung Univ Hsinchu Taiwan 30050 trophys, Hsinchu 30050, Taiwan Natl Chiao Tung Univ, Inst Phys, Hsinchu 30050, Taiwan Natl Chiao Tung Univ Hsinchu Taiwan 30050 st Phys, Hsinchu 30050, Taiwan
Titolo Testata:
PHYSICA C
fascicolo: 2, volume: 363, anno: 2001,
pagine: 119 - 129
SICI:
0921-4534(20011101)363:2<119:SYFGOT>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
PULSED-LASER DEPOSITION; RAY ABSORPTION-SPECTROSCOPY; TITANIUM-NITRIDE FILMS; ELECTRON-ENERGY-LOSS; THIN-FILMS; TIN; OXIDATION; MORPHOLOGY; PERFORMANCE; TRANSPARENT;
Keywords:
TiN films; TiO2 films; oxidation of TiN; pulsed laser deposition; YBCO/TiO2/STO bilayer structure; selective epitaxial growth technique; X-ray absorption spectroscopy;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Wu, KH Natl Chiao Tung Univ, Dept Electrophys, 1001 Ta Hsuch Rd, Hsinchu 30050, Taiwan Natl Chiao Tung Univ 1001 Ta Hsuch Rd Hsinchu Taiwan 30050 Taiwan
Citazione:
K.H. Wu et al., "Superconducting YBa2Cu3O7 films grown on TiO2 buffer layers derived from various processes", PHYSICA C, 363(2), 2001, pp. 119-129

Abstract

YBa2Cu3O7 (YBCO)/TiN and YBCO/TiO2 bilayer structures have been prepared on SrTiO3 (STO)(100) substrates by in situ pulsed laser deposition (PLD). The TiN films were originally intended to serve as the lower contact electrode for studying the c-axis transport properties of YBCO thin films. It was found that, under the optimum conditions of depositing YBCO thin films, the TiN(100) layer was oxidized and transformed into rutile TiO2(110) film. On the other hand, pure anatase TiO2(001) films were prepared by PLD using a rutile TiO2(110) substrate as the target. YBCO films grown on both phases ofTiO2 films show virtually the same transport properties of typical good quality singlelayer YBCO films. Comparative studies of depositing YBCO films directly onto a de-sputtered TiO2 template commonly used in the selective epitaxial growth process have, however, resulted in formation of a nonsuperconducting YBCO top layer. Experiments including interfacial X-ray absorption spectroscopy for determining the possible interactions occurring at the YBCO and TiO2 interface are reported. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 25/09/20 alle ore 22:54:18