Growth and small polaron properties of epitaxial La1−xCaxMnO3 thin films

Autor:	T. H. Geballe, Daniel C. Worledge, L. Miéville
Rok vydání:	1998
Předmět:	Lattice constant Materials science Condensed matter physics Annealing (metallurgy) Electrical resistivity and conductivity Doping Analytical chemistry General Physics and Astronomy Conductivity Thin film Polaron Pulsed laser deposition
Zdroj:	Journal of Applied Physics. 83:5913-5916
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.367454
Popis:	We report on the epitaxial growth and properties of La1−xCaxMnO3 thin films deposited by pulsed laser ablation. We grew and characterized 11 thin films covering the entire doping range, from x=0 to x=1. A presence of oxygen during postdeposition annealing is shown to be required in order to reduce the resistivity of the samples and to obtain reproducible samples. The lattice constant and phonon frequency that appear in the Emin–Holstein, [D. Emin and T. Holstein, Ann. Phys. 53, 439 (1969).] adiabatic small polaron conductivity formula are reported. Resistivity data from 20 to 300 K are also reported.
Databáze:	OpenAIRE
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