Transmission electron microscopic studies of LiNb0.5Ta0.5O3 films deposited on sapphire substrates by thermal plasma spray CVD (microstructure of LiNb0.5Ta0.5O3 films deposited by thermal plasma spray CVD)

Junko Shibata, Hironori Yamamoto, Sergei A. Kulinich, Takahisa Yamamoto, Kazuo Terashima, Toyonobu Yoshida, Yuichi Ikuhara

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Cross sections and plan views of LiNb0.5Ta0.5O3 films were investigated mainly by high-resolution transmission electron microscopy. These films were deposited on (0001) sapphire substrates by thermal plasma spray chemical vapor deposition method at various feeding rates of liquid raw materials. It was found that the crystallinity and the preferential orientation of the LNT films depend on the feeding rate. The LNT film formed at the feeding rate of 7 mL/min was epitaxially grown on the substrate, and the orientation relationship between the film and the substrate was (0001)LNT//(0001)sapphire, [112̄0]LNT//[112̄0]sapphire. The LNT films fabricated at the higher and the lower feeding rate were polycrystalline. These films included twin crystals and other phases such as Li(Nb, Ta)3O8. The calculations based on the coincidence of reciprocal lattice points revealed that the epitaxial orientation relationships observed by transmission electron microscopy satisfied the geometrically optimal coherency across the interface.

Original languageEnglish
Pages (from-to)1517-1524
Number of pages8
JournalMaterials Transactions
Volume43
Issue number7
DOIs
Publication statusPublished - Jul 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'Transmission electron microscopic studies of LiNb0.5Ta0.5O3 films deposited on sapphire substrates by thermal plasma spray CVD (microstructure of LiNb0.5Ta0.5O3 films deposited by thermal plasma spray CVD)'. Together they form a unique fingerprint.

Cite this