(111)p microtwinning in SrRuO3 thin films on (001)p LaAlO3

Y. Han, I. M. Reaney, D. S. Tinberg, S. Trolier-McKinstry

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4 Scopus citations


SrRuO3 (SRO) thin films grown on (001)p (p = pseudocubic) oriented LaAlO3 (LAO) by pulsed laser deposition have been characterized using transmission electron microscopy. Observations along the 〈100〉p directions suggests that although the SRO layer maintains a pseudocube-to-pseudocube orientation relationship with the underlying LAO substrate, it has a ferroelastic domain structure associated with a transformation on cooling to room temperature to an orthorhombic Pbnm phase (a - a - c + Glazer tilt system). In addition, extra diffraction spots located at ± 1/6(ooo)p and ± 1/3(ooo)p (where o indicates an index with an odd number) positions were obtained in 〈110〉p zone-axis diffraction patterns. These were attributed to the existence of high-density twins on {111} p pseudocubic planes within the SrRuO3 films rather than to more conventional mechanisms for the generation of superstructure reflections.

Original languageEnglish (US)
Pages (from-to)694-698
Number of pages5
JournalActa Crystallographica Section B: Structural Science
Issue number6
StatePublished - 2009

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)


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