Jump to main content
Jump to site search


Stability of the polar faces in KTiOPO4 crystalline layers grown by liquid phase epitaxy

Author affiliations

Abstract

The polar faces, (001) and (00[1 with combining macron]), of the ferroelectric KTiOPO4 crystal are not equivalent by symmetry. The stability and the growth rate of both faces have been determined by growing thick crystalline layers by liquid phase epitaxy onto oriented crystalline commercial KTiOPO4 slabs. Growth solutions with different molar compositions in the system KTiOPO4–KPO3–KF and different supersaturation degrees end up with the same result. Whereas the (00[1 with combining macron]) faces are stable under all the experimental conditions used, the (001) ones are not stable and turn into (00[1 with combining macron]) faces. Head-to-head domains oriented along the [010] axis at |7 ± 1°| to the [001] axis propagate from the (001) surface of the seed to the as-grown crystalline layers. The final epitaxies obtained by this process show two (00[1 with combining macron]) polar end faces; so a twin-crystal along the c direction was grown.

Graphical abstract: Stability of the polar faces in KTiOPO4 crystalline layers grown by liquid phase epitaxy

Back to tab navigation

Publication details

The article was received on 28 Aug 2018, accepted on 18 Oct 2018 and first published on 19 Oct 2018


Article type: Paper
DOI: 10.1039/C8CE01453A
Citation: CrystEngComm, 2018, Advance Article
  •   Request permissions

    Stability of the polar faces in KTiOPO4 crystalline layers grown by liquid phase epitaxy

    A. Peña, B. Ménaert, J. Debray, C. Canalias and B. Boulanger, CrystEngComm, 2018, Advance Article , DOI: 10.1039/C8CE01453A

Search articles by author

Spotlight

Advertisements