Stabilization of the perovskite phase in the Y-Bi-O system by using a BaBiO3 buffer Layer

Rosa Luca Bouwmeester; C.A.J. de Hond; Nicolas Gauquelin; Jo Verbeeck; G. Koster; Alexander  Brinkman

doi:10.1002/pssr.201800679

Stabilization of the perovskite phase in the Y-Bi-O system by using a BaBiO3 buffer Layer

Rosa Luca Bouwmeester (Corresponding Author), C.A.J. de Hond, Nicolas Gauquelin, Jo Verbeeck, G. Koster, Alexander Brinkman

Research output: Contribution to journal › Letter › Academic › peer-review

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Abstract

A topological insulating phase has theoretically been predicted for the thermodynamically unstable perovskite phase of YBiO3. Here, it is shown that the crystal structure of the Y–Bi–O system can be controlled by using a BaBiO3 buffer layer. The BaBiO3 film overcomes the large lattice mismatch of 12% with the SrTiO3 substrate by forming a rocksalt structure in between the two perovskite structures. Depositing an YBiO3 film directly on a SrTiO3 substrate gives a fluorite structure. However, when the Y–Bi–O system is deposited on top of the buffer layer with the correct crystal phase and comparable lattice constant, a single oriented perovskite structure with the expected lattice constants is observed.

Original language	English
Article number	1800679
Number of pages	8
Journal	Physica status solidi. Rapid research letters
Volume	13
Issue number	7
Early online date	6 Mar 2019
DOIs	https://doi.org/10.1002/pssr.201800679
Publication status	Published - 1 Jul 2019

Keywords

UT-Hybrid-D
Pulsed Laser Deposition (PLD)
Transmission Electron Microscopy (TEM)
Topological insulators
Buffer layers
Perovskite oxide
Scanning Transmission Electron Microscopy (STEM)
22/4 OA procedure

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10.1002/pssr.201800679

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title = "Stabilization of the perovskite phase in the Y-Bi-O system by using a BaBiO3 buffer Layer",

abstract = "A topological insulating phase has theoretically been predicted for the thermodynamically unstable perovskite phase of YBiO3. Here, it is shown that the crystal structure of the Y–Bi–O system can be controlled by using a BaBiO3 buffer layer. The BaBiO3 film overcomes the large lattice mismatch of 12% with the SrTiO3 substrate by forming a rocksalt structure in between the two perovskite structures. Depositing an YBiO3 film directly on a SrTiO3 substrate gives a fluorite structure. However, when the Y–Bi–O system is deposited on top of the buffer layer with the correct crystal phase and comparable lattice constant, a single oriented perovskite structure with the expected lattice constants is observed.",

keywords = "UT-Hybrid-D, Pulsed Laser Deposition (PLD), Transmission Electron Microscopy (TEM), Topological insulators, Buffer layers, Perovskite oxide, Scanning Transmission Electron Microscopy (STEM), 22/4 OA procedure",

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AU - Gauquelin, Nicolas

AU - Verbeeck, Jo

AU - Koster, G.

AU - Brinkman, Alexander

N1 - Wiley deal

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AB - A topological insulating phase has theoretically been predicted for the thermodynamically unstable perovskite phase of YBiO3. Here, it is shown that the crystal structure of the Y–Bi–O system can be controlled by using a BaBiO3 buffer layer. The BaBiO3 film overcomes the large lattice mismatch of 12% with the SrTiO3 substrate by forming a rocksalt structure in between the two perovskite structures. Depositing an YBiO3 film directly on a SrTiO3 substrate gives a fluorite structure. However, when the Y–Bi–O system is deposited on top of the buffer layer with the correct crystal phase and comparable lattice constant, a single oriented perovskite structure with the expected lattice constants is observed.

KW - UT-Hybrid-D

KW - Pulsed Laser Deposition (PLD)

KW - Transmission Electron Microscopy (TEM)

KW - Topological insulators

KW - Buffer layers

KW - Perovskite oxide

KW - Scanning Transmission Electron Microscopy (STEM)

KW - 22/4 OA procedure

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M3 - Letter

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JF - Physica status solidi. Rapid research letters

IS - 7

M1 - 1800679

ER -

Stabilization of the perovskite phase in the Y-Bi-O system by using a BaBiO3 buffer Layer

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