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Growth and interface engineering in thin-filmBa0.6Sr0.4TiO3/SrMoO3heterostructures

Radetinac, Aldin and Ziegler, Jürgen and Vafaee, Mehran and Alff, Lambert and Komissinskiy, Philipp (2017):
Growth and interface engineering in thin-filmBa0.6Sr0.4TiO3/SrMoO3heterostructures.
In: Journal of Crystal Growth, Elsevier Science Publishing, pp. 134-138, 463, ISSN 00220248,
DOI: 10.1016/j.jcrysgro.2017.02.015,
[Online-Edition: https://doi.org/10.1016/j.jcrysgro.2017.02.015],
[Article]

Abstract

Epitaxial heterostructures of ferroelectric Ba0.6Sr0.4TiO3 and highly conducting SrMoO3 were grown by pulsed laser deposition on SrTiO3 (0 0 1) substrates. Surface oxidation of the SrMoO3 film is suppressed using a thin cap interlayer of Ba0.6Sr0.4TiO3-δ grown in reduced atmosphere. As shown by X-ray photoelectron spectroscopy, the Mo4+ valence state of the SrMoO3 films is stable upon annealing of the sample in oxygen up to 600 °C. The described oxygen interface engineering enables utilization of the highly conducting material SrMoO3 in multilayer oxide ferroelectric varactors.

Item Type: Article
Erschienen: 2017
Creators: Radetinac, Aldin and Ziegler, Jürgen and Vafaee, Mehran and Alff, Lambert and Komissinskiy, Philipp
Title: Growth and interface engineering in thin-filmBa0.6Sr0.4TiO3/SrMoO3heterostructures
Language: English
Abstract:

Epitaxial heterostructures of ferroelectric Ba0.6Sr0.4TiO3 and highly conducting SrMoO3 were grown by pulsed laser deposition on SrTiO3 (0 0 1) substrates. Surface oxidation of the SrMoO3 film is suppressed using a thin cap interlayer of Ba0.6Sr0.4TiO3-δ grown in reduced atmosphere. As shown by X-ray photoelectron spectroscopy, the Mo4+ valence state of the SrMoO3 films is stable upon annealing of the sample in oxygen up to 600 °C. The described oxygen interface engineering enables utilization of the highly conducting material SrMoO3 in multilayer oxide ferroelectric varactors.

Journal or Publication Title: Journal of Crystal Growth
Volume: 463
Publisher: Elsevier Science Publishing
Uncontrolled Keywords: A1. Surfaces, A1. Interfaces, A3. Laser epitaxy, A3. Heterostrostructures, B1. Perovskite oxides
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Advanced Thin Film Technology
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 11 Dec 2017 12:07
DOI: 10.1016/j.jcrysgro.2017.02.015
Official URL: https://doi.org/10.1016/j.jcrysgro.2017.02.015
Funders: This work was supported by the DFG projects GRK 1037 (TICMO) and KO 4093/1.
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