Magnetotransport properties of fully strained epitaxial thin films of La2/3Ca1/3MnO3 grown on SrTiO3
作者： M. Bibes , M.-J. Casanove , Ll. Balcells , S. Valencia , B. Martı́nez
DOI: 10.1016/S0169-4332(01)00747-4
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摘要: Abstract In this paper, we show that under appropriate deposition conditions, epitaxial films of La2/3Ca1/3MnO3 can grow fully strained on SrTiO3 (STO) single-crystalline substrates up to thicknesses as large 180 nm. particular, the growth rate appears be a critical parameter. The microstructure different thickness values is analyzed by high-resolution transmission electron microscopy, showing sharp interfaces and no misfit dislocations. magnetotransport properties are studied function thickness. It found that, despite absence steric effects related strain relaxation, metal-to-insulator transition temperature reduced from 270 K for 180 nm some 100 K thinner thus revealing increasing influence interface film with substrate.
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