Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevB.62.8976
Title: Effect of oxygen nonstoichiometry on electrotransport and low-field magnetotransport property of polycrystalline La0.5Sr0.5MnO3-δ thin films
Authors: Liu, J.-M.
Huang, Q.
Li, J. 
Ong, C.K. 
Wu, Z.C.
Liu, Z.G.
Du, Y.W.
Issue Date: 1-Oct-2000
Citation: Liu, J.-M., Huang, Q., Li, J., Ong, C.K., Wu, Z.C., Liu, Z.G., Du, Y.W. (2000-10-01). Effect of oxygen nonstoichiometry on electrotransport and low-field magnetotransport property of polycrystalline La0.5Sr0.5MnO3-δ thin films. Physical Review B - Condensed Matter and Materials Physics 62 (13) : 8976-8982. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.62.8976
Abstract: Polycrystalline La0.5Sr0.5MnO3-δ thin films deposited on quartz wafers at 680°C and various oxygen pressures P by pulsed laser deposition are prepared. The effects of oxygen nonstoichiometry on the microstructural, electrotransport and low-field magnetotransport property of the thin films are investigated in details. A structural distortion from the stoichiometric lattice is identified for the samples deposited at P 0.1 mbar. Oxygen overdeficiency at P≤0.1 mbar essentially prohibits the spin reordering. The temperature dependence of the electro- and magnetotransport properties is explained by the two-channel model where the insulating channels and metallic ones coexist in parallel.
Source Title: Physical Review B - Condensed Matter and Materials Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/96330
ISSN: 01631829
DOI: 10.1103/PhysRevB.62.8976
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