Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/25542
Title: In situ oxygen control and high thermal stability of epitaxial (La1-xNdx)0.7Sr0.3MnO3 films fabricated by pulsed laser deposition
Authors: Wu, WB
Wong, KH
Choy, CL 
Zhang, YH
Keywords: Epitaxy
Heat treatment
Laser ablation
Resistivity
Issue Date: 2001
Publisher: Elsevier
Source: Thin solid films, 2001, v. 389, no. 1-2, p. 56-61 How to cite?
Journal: Thin solid films 
Abstract: In this work, epitaxial (La1-xNdx)0.7Sr0.3MnO3 (x = 0, 0.5 and 1) films have been grown on LaAlO3(001) substrates at an oxygen ambient of 400-10 mtorr by pulsed laser deposition. As a result, the oxygen contents and hence the metal-semiconductor transition temperature and the overall resistivity of the films were tuned systematically. The relationship between the transition temperature and the environmental oxygen pressure for film growth was compared with that for fabricating bulk manganate perovskites. It is found that the oxygen content of the epitaxial films is stable against post-deposition heat treatments. The electrical transport behavior of the as-deposited films remains unchanged even after in situ annealing at the deposition temperature and in oxygen pressure ranging from 2 × 10-6 to 760 torr. Our results suggest that the manganate films are very desirable for fabrication of the epitaxial all-perovskite-type oxide heterostructures.
URI: http://hdl.handle.net/10397/25542
ISSN: 0040-6090
EISSN: 1879-2731
DOI: 10.1016/S0040-6090(01)00905-1
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