Structural properties and phase formation of epitaxial PbVO

Seol Hee Oh, Hye Jin Jin, Hae Young Shin, Ran Hee Shin, Seokhyun Yoon, Yu Seong Seo, Jai Seok Ahn, William Jo

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

We report epitaxial synthesis of PbVO3 (PVO) thin films on LaAlO3 (LAO) (0 0 1) substrates under reduction atmosphere from a Pb2V2O7 sintered target over a wide range of temperatures using laser ablation. Polar magnetic PVO has a non-centrosymmetric structure (tetragonality c/a = 1.23). The effects of substrate temperature on structural properties and chemical composition of PVO thin films were studied by x-ray diffraction and energy-dispersive spectrometry. The c-axis of the PVO films was abnormally elongated as much as 5-7% on the well-lattice-matched LAO substrates. Using Raman scattering spectroscopy, single phase formation of PVO with the shift of phonon modes was confirmed and epitaxial growth of the PVO films was also confirmed with polarization-dependent measurements. The strained and epitaxial growth of the PVO films will lead to a new class of multiferroic materials with future electronic device applications.

Original languageEnglish
Article number245302
JournalJournal of Physics D: Applied Physics
Volume47
Issue number24
DOIs
StatePublished - 18 Jun 2014

Keywords

  • epitaxial growth
  • Lead vanadate
  • polar magnetic
  • pulsed laser deposition
  • thin film

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