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Transmission-electron-microscopy study of quasi-epitaxial tungsten-bronze (Sr2.5Ba2.5Nb10O30) thin film on perovskite (SrTiO3) single crystal

  • Dong Su (a1), Anna Infortuna (a1), Paul Muralt (a1), Nava Setter (a1) and Marco Cantoni (a2)...

Abstract

Strontium barium niobate (Sr2.5Ba2.5Nb10O30) thin films were deposited on (001) SrTiO3 single-crystalline substrates by pulsed laser deposition. The growth nature was investigated by transmission electron microscopy (TEM). Selected-area electron diffraction and high-resolution transmission electron microscopy revealed the existence of six types of grains. These grains grew on the substrate in a partially epitaxial fashion. Geometrical models were built, which were confirmed by TEM observations. Based on the TEM results and geometrical analysis, a crystallographic model was developed. The strain nature resulting from the growth columns is discussed in this report.

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a) Address all correspondence to this author. e-mail: nava.setter@epfl.ch

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Keywords

Transmission-electron-microscopy study of quasi-epitaxial tungsten-bronze (Sr2.5Ba2.5Nb10O30) thin film on perovskite (SrTiO3) single crystal

  • Dong Su (a1), Anna Infortuna (a1), Paul Muralt (a1), Nava Setter (a1) and Marco Cantoni (a2)...

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