Epitaxial growth and electrical transport properties of La0.5Sr0.5Co03 thin films prepared by pulsed laser deposition
- 38 Downloads
- 2 Citations
Abstract
Epitaxial growth of the La0.5Sr0.5 3(LO) thin films has been realized on Lin3, SrTiC3 and MgO substrates by pulsed laser deposition. The epitaxial growth behavior and the electrical transport properties of these films were studied systematically. The temperature dependencies of the resistivity of the film have been determined. Studies indicate that close dependencies exist between the crystal structures and the electrical transport properties of the epitaxial LSCO films, and that the epitaxial thin films are of low resistivity and metallic conductive features. The epitaxial films deposited on the LaA103 substrates at about 700 °C possess the optimal properties compared with the others. Discussions of the dependencies and the mechanisms of the epitaxial structures on the electrical transport properties of the LSCO films have been made.
Keywords
epitaxial growth pulsed laser deposition La0.5Sr0.5Co03 thin film electrical transport propertiesPreview
Unable to display preview. Download preview PDF.
References
- 1.Scott, J. F., de Araujo, C. P. A., Ferroelectric memories,Science, 1989, 246: 1400.CrossRefGoogle Scholar
- 2.Cheung, J.T., Morgan, P.E.D., Lowndes, D.H. et al., Structural and electrical properties of Lag0.5 Sr0.5 CoO3 epitaxial films,Appl. Phys. Lett., 1993, 62(17): 2045.CrossRefGoogle Scholar
- 3.Ramesh, R., Gilchrist, H., Sands, T. et al., Ferroelectric La-Sr-Co-O/Pb-Zr-Ti-O/La-Sr-Co-O heterostructures on silicon via template growth,Appl. Phys. Lett., 1993, 63(26): 3592.CrossRefGoogle Scholar
- 4.Jonker, G.H. Van Santen, J.H., Magnetic compounds with perovskite structure ferromagnetic compounds of cobalt,Physica, 1953, 19: 120.CrossRefGoogle Scholar
- 5.Briceno, G., Chang Hauyee, Sun Xiaodong et al., A class of coblt oxide magnetresistance materials discovered with combinatorial synthesis,Science, 1995, 270: 273.CrossRefGoogle Scholar
- 6.Saenger, K. L., Pulsed laser deposition: Part I. A review of process characteristics and capabilities,Proc. Adv. Mat., 1993, 2: 1.Google Scholar
- 7.Li Meiya, Wang Zhonglie, Fan Shoushan et al., Growth of ferroelectric (K0.5Na0.5)0.2(Sr0.75Ba0.25)0.9Nb206 thin films by pulsed laser deposition,Solid State Communications, 1997, 103(5): 285.CrossRefGoogle Scholar
- 8.Walton, D., Nucleation of vapor deposits,J. Chem. Phys., 1962, 37: 2182.CrossRefGoogle Scholar
- 9.Hirata, A., Saiki, K., Koma, A. et al., Electronic structures of a SrO-terminated SrTiO3(100) surface,Surf. Sci., 1994, 319: 267.CrossRefGoogle Scholar
- 10.Wang, Z. L., Shapiro, A. J., Studies of LaA1031100 surfaces using RHEED and REM I: twins, steps and dislocations,Surf. Sci., 1995, 328: 141.CrossRefGoogle Scholar
- 11.De Germes, P. G., Effect of double exchange in magnetic crystals,Phys. Rev., 1960, 118: 141.CrossRefGoogle Scholar
- 10.Chrisey, D. B., Hubler, G. K.,Pulsed Laser Deposition of Thin Films, A Wiley-Interscience Publication, New York: John Wiley, 1994, 262.Google Scholar