Magnetic studies on thin films of La$_{0.65}$Pb$_{0.35}$MnO$_{3}$

ORAL

Abstract

Magnetic and structural investigations on thin films of La$_{0.65}$Pb$_{0.35}$MnO$_{3}$ deposited on a LaAlO$_{3}$ substrate are reported. Transmission electron microscopy showed an almost epitaxial growth of the perovskite film, indicating fourfold symmetry for both substrate and thin film. Low Energy Electron Diffraction and Wide Angle X-Ray Scattering support transmission electron microscopy and scanning tunneling microscopy results. Magneto-optical Kerr effect data are consistent with the fourfold symmetry. Ferromagnetic Resonance experiments performed in the X band revealed a more complex structure. The angular dependence of the resonance line width, resonance line intensity, and double integral of the resonance line support a slightly distorted four-fold symmetry whereas the angular dependence of the resonance line position has a two-fold symmetry. This discrepancy was ascribed to the mismatch between the film and the substrate and it is considered as a proof of the sensitivity of ferromagnetic resonance.

*The research was funded by: NSF-MRSEC grant to the University of Nebraska-Lincoln and U.S. Army Research Office grant \#W911NF- 08-1-0353 awarded to the University of Texas Pan-American.

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Authors

  • Steven Tidrow

    • The University of Texas Pan American

  • Thomas Mion

    • The University of Texas Pan American

  • Magdalena Dorina Chipara

    • The University of Texas Pan American

  • Andrei Sokolov

    • University of Nebraska-Lincoln

  • Liou Sy-Hwang

    • University of Nebraska-Lincoln

  • Ralph Skomski

    • University of Nebraska-Lincoln
    • U. Nebraska

  • Peter Dowben

    • University of Nebraska-Lincoln
    • University of Nebraska

  • Shireen Adenwalla

    • University of Nebraska-Lincoln

  • Mircea Chipara

    • The University of Texas Pan American

  • David Sellmyer

    • University of Nebraska-Lincoln
    • Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, NE 68588.