Strain-induced crystal structure change in ultrathin films of Pr0.7Sr0.3MnO3

MacLaren, I. , Wang, Z. L., Wang, H.S. and Li, Q. (2002) Strain-induced crystal structure change in ultrathin films of Pr0.7Sr0.3MnO3. Applied Physics Letters, 80(8), pp. 1406-1408. (doi:10.1063/1.1453482)

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Abstract

Ultrathin films (<30 nm) of Pr0.7Sr0.3MnO3Pr0.7Sr0.3MnO3 on LaAlO3LaAlO3 have been studied using transmission electron microscopy (TEM). It was shown that the films are highly uniform and defect-free, and that they are coherently strained to the smaller lattice parameter of the substrate, resulting in a tetragonal expansion perpendicular to the film plane and a change of crystal structure from the ordered orthorhombic of bulk materials to a simple tetragonal perovskite. The variation of the tetragonality with distance from the interface was also determined from high-resolution TEM images.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:MacLaren, Dr Ian
Authors: MacLaren, I., Wang, Z. L., Wang, H.S., and Li, Q.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Applied Physics Letters
Publisher:AIP Publishing
ISSN:0003-6951
ISSN (Online):1077-3118

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