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

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

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

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
Volume65
Issue number6
DOIs
StatePublished - Dec 3 2009

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Pulsed laser deposition
Transmission Electron Microscopy
Diffraction patterns
Lasers
Diffraction
Transmission electron microscopy
Cooling
Thin films
Temperature
Substrates
Direction compound

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

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title = "(111)p microtwinning in SrRuO3 thin films on (001)p LaAlO3",
abstract = "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.",
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(111)p microtwinning in SrRuO3 thin films on (001)p LaAlO3 . / Han, Y.; Reaney, I. M.; Tinberg, D. S.; Trolier-McKinstry, Susan E.

In: Acta Crystallographica Section B: Structural Science, Vol. 65, No. 6, 03.12.2009, p. 694-698.

Research output: Contribution to journalArticle

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