Temperature dependent Raman scattering of the epitaxial Sr1.9Ca0.1NaNb5O15 film

W. C. Liu, Chee Leung Mak, K. H. Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)

Abstract

Epitaxial ferroelectric Sr1.9Ca0.1NaNb5O15(SCNN) thin films have been fabricated successfully by pulsed laser deposition on (100)MgO substrates. Temperature dependency of the vibrational modes of these films was investigated for the first time using Raman scattering technique. For temperatures ranging between 50 °C and 450 °C, two strong and broad A1(TO) phonons around 238 and 608 cm- 1, and one weak B1(TO) phonon around 142 cm- 1were observed. Changes in the temperature dependency of the peak position, the full-width at half maximum and integrated intensity of the Raman modes were observed in different temperature ranges. These changes are attributed to the structural phase transitions between 200 °C and 325 °C for the SCNN films as well as their relaxor properties.
Original languageEnglish
Pages (from-to)4822-4825
Number of pages4
JournalThin Solid Films
Volume517
Issue number17
DOIs
Publication statusPublished - 1 Jul 2009

Keywords

  • Phase transition
  • Raman scattering
  • SCNN

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this