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Reversible Structural Transition in Epitaxial Manganite Film

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arxiv cond-mat/0112140 v2 pith:Q7ZWXMTA submitted 2001-12-08 cond-mat.str-el cond-mat.mtrl-sci

Reversible Structural Transition in Epitaxial Manganite Film

classification cond-mat.str-el cond-mat.mtrl-sci
keywords transitionelectronfilmdiffractionepitaxialreversiblestructuralattributed
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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A reversible structural transition of an epitaxial La2/3Sr1/3MnO3 film deposited on the LaAlO3 substrate has been investigated by means of in situ high-resolution transmission electron microscopy (HREM) and electron diffraction, combined with image and diffraction calculations. We observe that the crystallographic symmetry of the film can be lowered via electron beam irradiation, leading to a rhombohedral-monoclinic transition. This transition can be attributed to the cooperating effect of the mismatch stress and the irradiation-induced thermal-stress.

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