Abstract
Epitaxial La 0.67Ca 0.33MnO 3:SrTiO 3 (LCMO:STO) composite thin films have been grown on single crystal LaAlO 3(001) substrates by a cost effective polymer-assisted deposition method. Both x-ray diffraction and high-resolution transmission electron microscopy confirm the growth of epitaxial films with an epitaxial relationship between the films and the substrates as (002) film(002) sub and [202] film[202] sub. The transport property measurement shows that the STO phase significantly increases the resistivity and enhances the magnetoresistance (MR) effect of LCMO and moves the metal-insulator transition to lower temperatures. For example, the MR values measured at magnetic fields of 0 and 3 T are -44.6 at 255 K for LCMO, -94.2 at 125 K for LCMO:3 STO, and -99.4 at 100 K for LCMO:5 STO, respectively.
Original language | English (US) |
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Article number | 082403 |
Journal | Applied Physics Letters |
Volume | 100 |
Issue number | 8 |
DOIs | |
State | Published - Feb 20 2012 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)