Growth and properties of c-axis textured La0.7Sr0.3MnO3−δ films on SiO2/Si substrates with a Bi4Ti3O12 template layer
- 31 March 1997
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 70 (13), 1763-1765
- https://doi.org/10.1063/1.118649
Abstract
C -axis textured La 0.7 Sr 0.3 MnO 3−δ (LSMO) films were fabricated on SiO 2 /Si(001) substrates using a Bi 4 Ti 3 O 12 (BTO) template layer. Electrical and magnetic properties of LSMO were investigated. The LSMO/BTO layer of this structure has no in-plane alignment. Even though a ferromagnetictransition temperature, T C , is as high as that of the epitaxial LSMO film (360 K), a resistivity peak temperature, T P , is about 140 K lower than T C . The resistivity behavior as a function of temperature for LSMO/BTO/ SiO 2 /Si films is found to be dominated by grain boundary effects. Low field sensitive magnetoresistance which suggests spin tunneling through the grain boundaries is also observed at room temperature.Keywords
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