Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.122080
Title: The large magnetoresistance property of La0.5Sr0.5CoO3-x thin films prepared by pulsed laser deposition
Authors: Liu, J.-M. 
Ong, C.K. 
Issue Date: 1998
Citation: Liu, J.-M., Ong, C.K. (1998). The large magnetoresistance property of La0.5Sr0.5CoO3-x thin films prepared by pulsed laser deposition. Applied Physics Letters 73 (8) : 1047-1049. ScholarBank@NUS Repository. https://doi.org/10.1063/1.122080
Abstract: High-quality (001) thin film La0.5Sr0.5CoO3-x (LSCO) has been prepared on (001) SrTiO3 substrates by pulsed laser deposition under different oxygen pressures with and without postannealing. C-axis expansion of the LSCO with reducing oxygen pressure was revealed. The electrical resistivity increased over five orders of magnitude when oxygen pressure varied from 1.0 mbar (plus postannealing) to 10-3 mbar. The negative magnetoresistance (n-MR) property as a function of temperature and oxygen pressure was investigated. Linear dependence of the n-MR ratio on magnetic field and temperature was found and significant effect of oxygen stoichiometry on the n-MR was demonstrated. The film prepared at 650°C and 0.1 mbar oxygen shows a n-MR ratio of -16% at 81 K under a field of only 0.2 T. © 1998 American Institute of Physics.
Source Title: Applied Physics Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/98291
ISSN: 00036951
DOI: 10.1063/1.122080
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