Print Email Facebook Twitter Magnetic phase diagram and structural separation of La0.7(Ca1?ySry)0.3MnO3 thin films Title Magnetic phase diagram and structural separation of La0.7(Ca1?ySry)0.3MnO3 thin films Author Lee, Y.P. Park, S.Y. Park, J.S. Prokhorov, V.G. Komashko, V.A. Svetschnikov, V.L. Kang, J.H. Faculty Applied Sciences Date 2007-03-09 Abstract The structural, magnetic, and transport properties of La0.7(Ca1?ySry)0.3MnO3 films, deposited on a LaAlO3?(001) single crystalline substrate by rf-magnetron sputtering using “soft” (or powder) targets, have been investigated. It was found that at 0.3 ? y ? 0.5 both the rhombohedral (R3c) and the orthorhombic (Pnma) crystal phases in the form of nanoscale clusters are coexistent at room temperature. The observed structural clustering is accompanied by two-stage magnetic and electronic transitions, and governed by a nonuniform distribution of the lattice strain through the film. It was shown that for the films with 0 ? y ? 0.5 the nonlinear (almost parabolic) MR(H) dependence is typical while, for 0.65 ? y ? 1.0, the linear MR(H) behavior is observed at room temperature. The magnetotransport properties of films are explained within the framework of field-dependent activation-energy model. The magnetic phase diagram for La0.7(Ca1?ySry)0.3MnO3 thin-film system is also presented. Subject magnetic transitionslanthanum compoundscalcium compoundsstrontium compoundsthin filmsgalvanomagnetic effects To reference this document use: http://resolver.tudelft.nl/uuid:67028ebf-465b-4a37-ac71-b6730bee45ff DOI https://doi.org/10.1063/1.2435991 Publisher American Institute of Physics ISSN 0021-8979 Source http://link.aip.org/link/JAPIAU/v101/i5/p053708/s1 Source Journal of Applied Physics, 101 (5), 2007 Part of collection Institutional Repository Document type journal article Rights (c) 2007 The Author(s); American Institute of Physics Files PDF Svetchnikov_2007.pdf 406.28 KB Close viewer /islandora/object/uuid:67028ebf-465b-4a37-ac71-b6730bee45ff/datastream/OBJ/view