Synthesis of BiFeO3 thin films on single-terminated Nb : SrTiO3 (111) substrates by intermittent microwave assisted hydrothermal method

Synthesis of BiFeO3 thin films on single-terminated Nb : SrTiO3 (111) substrates by intermittent microwave assisted hydrothermal method

We report on a simple and fast procedure to create arrays of atomically flat terraces on single crystal SrTiO3 (111) substrates and the deposition of ferroelectric BiFeO3 thin films on such single-terminated surfaces. A microwave-assisted hydrothermal method in deionized water and ammonia solution s...

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Main Authors: Ivan Velasco-Davalos, Fabian Ambriz-Vargas, Gitanjali Kolhatkar, Reji Thomas, Andreas Ruediger
Format: Article
Language:English
Published: AIP Publishing LLC 2016-06-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4954695
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spelling doaj-358c248e907c4771aa934e7826fa9b7e2020-11-25T00:04:26ZengAIP Publishing LLCAIP Advances2158-32262016-06-0166065117065117-1110.1063/1.4954695066606ADVSynthesis of BiFeO3 thin films on single-terminated Nb : SrTiO3 (111) substrates by intermittent microwave assisted hydrothermal methodIvan Velasco-Davalos0Fabian Ambriz-Vargas1Gitanjali Kolhatkar2Reji Thomas3Andreas Ruediger4 Centre Énergie, Matériaux et Télécommunications, INRS, 1650 Lionel-Boulet, Varennes, Québec, J3X1S2, Canada Centre Énergie, Matériaux et Télécommunications, INRS, 1650 Lionel-Boulet, Varennes, Québec, J3X1S2, Canada Centre Énergie, Matériaux et Télécommunications, INRS, 1650 Lionel-Boulet, Varennes, Québec, J3X1S2, Canada Centre Énergie, Matériaux et Télécommunications, INRS, 1650 Lionel-Boulet, Varennes, Québec, J3X1S2, Canada Centre Énergie, Matériaux et Télécommunications, INRS, 1650 Lionel-Boulet, Varennes, Québec, J3X1S2, CanadaWe report on a simple and fast procedure to create arrays of atomically flat terraces on single crystal SrTiO3 (111) substrates and the deposition of ferroelectric BiFeO3 thin films on such single-terminated surfaces. A microwave-assisted hydrothermal method in deionized water and ammonia solution selectively removes either (SrO3)4− or Ti4+ layers to ensure the same chemical termination on all terraces. Measured step heights of 0.225 nm (d111) and uniform contrast in the phase image of the terraces confirm the single termination in pure and Nb doped SrTiO3 single crystal substrates. Multiferroic BiFeO3 thin films were then deposited by the same microwave assisted hydrothermal process on Nb : SrTiO3 (111) substrates. Bi(NO3)3 and Fe(NO3)3 along with KOH served as the precursors solution. Ferroelectric behavior of the BiFeO3 films on Nb : SrTiO3 (100) substrates was verified by piezoresponse force microscopy.http://dx.doi.org/10.1063/1.4954695
collection DOAJ
language English
format Article
sources DOAJ
author Ivan Velasco-Davalos
Fabian Ambriz-Vargas
Gitanjali Kolhatkar
Reji Thomas
Andreas Ruediger
spellingShingle Ivan Velasco-Davalos
Fabian Ambriz-Vargas
Gitanjali Kolhatkar
Reji Thomas
Andreas Ruediger
Synthesis of BiFeO3 thin films on single-terminated Nb : SrTiO3 (111) substrates by intermittent microwave assisted hydrothermal method
AIP Advances
author_facet Ivan Velasco-Davalos
Fabian Ambriz-Vargas
Gitanjali Kolhatkar
Reji Thomas
Andreas Ruediger
author_sort Ivan Velasco-Davalos
title Synthesis of BiFeO3 thin films on single-terminated Nb : SrTiO3 (111) substrates by intermittent microwave assisted hydrothermal method
title_short Synthesis of BiFeO3 thin films on single-terminated Nb : SrTiO3 (111) substrates by intermittent microwave assisted hydrothermal method
title_full Synthesis of BiFeO3 thin films on single-terminated Nb : SrTiO3 (111) substrates by intermittent microwave assisted hydrothermal method
title_fullStr Synthesis of BiFeO3 thin films on single-terminated Nb : SrTiO3 (111) substrates by intermittent microwave assisted hydrothermal method
title_full_unstemmed Synthesis of BiFeO3 thin films on single-terminated Nb : SrTiO3 (111) substrates by intermittent microwave assisted hydrothermal method
title_sort synthesis of bifeo3 thin films on single-terminated nb : srtio3 (111) substrates by intermittent microwave assisted hydrothermal method
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2016-06-01
description We report on a simple and fast procedure to create arrays of atomically flat terraces on single crystal SrTiO3 (111) substrates and the deposition of ferroelectric BiFeO3 thin films on such single-terminated surfaces. A microwave-assisted hydrothermal method in deionized water and ammonia solution selectively removes either (SrO3)4− or Ti4+ layers to ensure the same chemical termination on all terraces. Measured step heights of 0.225 nm (d111) and uniform contrast in the phase image of the terraces confirm the single termination in pure and Nb doped SrTiO3 single crystal substrates. Multiferroic BiFeO3 thin films were then deposited by the same microwave assisted hydrothermal process on Nb : SrTiO3 (111) substrates. Bi(NO3)3 and Fe(NO3)3 along with KOH served as the precursors solution. Ferroelectric behavior of the BiFeO3 films on Nb : SrTiO3 (100) substrates was verified by piezoresponse force microscopy.
url http://dx.doi.org/10.1063/1.4954695
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AT fabianambrizvargas synthesisofbifeo3thinfilmsonsingleterminatednbsrtio3111substratesbyintermittentmicrowaveassistedhydrothermalmethod
AT gitanjalikolhatkar synthesisofbifeo3thinfilmsonsingleterminatednbsrtio3111substratesbyintermittentmicrowaveassistedhydrothermalmethod
AT rejithomas synthesisofbifeo3thinfilmsonsingleterminatednbsrtio3111substratesbyintermittentmicrowaveassistedhydrothermalmethod
AT andreasruediger synthesisofbifeo3thinfilmsonsingleterminatednbsrtio3111substratesbyintermittentmicrowaveassistedhydrothermalmethod
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