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Optimization of synthesis of the solid solution, Pb(Zr1–xTix)O3 on a single substrate using a high-throughput modified molecular-beam epitaxy technique

Optimization of synthesis of the solid solution, Pb(Zr1–xTix)O3 on a single substrate using a high-throughput modified molecular-beam epitaxy technique
Optimization of synthesis of the solid solution, Pb(Zr1–xTix)O3 on a single substrate using a high-throughput modified molecular-beam epitaxy technique
Synthesis of Pb(Zr1–xTix)O3 (PZT) on a single substrate using a high-throughput molecular-beam epitaxy technique was demonstrated.

In situ synthesis of crystalline PZT at elevated substrate temperatures could not be achieved, as reevaporation of Pb (PbO) occurred and the partial pressure of O2 was insufficient to prevent formation of a PbPtx phase during deposition.

Instead, ex situ postdeposition annealing was performed on PZT deposited at room temperature. Dense single phase PZT was prepared with a compositional range of 0.1 > x > 0.9, for film thicknesses up to 800 nm. Transmission electron microscopy revealed the grain size increased from 50 nm to ~0.5 µm with increasing Zr-concentration and became more columnar. Raman, x-ray diffraction, and scanning electron microscopy/energy dispersive spectroscopy results revealed a morphotropic phase boundary between rhombohedral and tetragonal phases occurred at x ~0.4 rather than at x = 0.47 in bulk ceramics. This was attributed to clamping arising from mismatch in thermal expansion between the film and substrate.
164-172
Anderson, P.S.
56245441-354c-4290-9311-13ef36bf396e
Guerin, S.
e185e0c2-85c6-4d1c-a2cf-cd2f410d346f
Hayden, B.E.
aea74f68-2264-4487-9d84-5b12ddbbb331
Han, Y.
7ff3e82b-2df8-40df-adb9-1e0afb985a86
Pasha, M.
6453e7f7-badd-44ee-bc87-fbd5b071d33e
Whittle, K.R.
543c3a8b-39c3-4ba6-84da-76d8fab170ab
Reaney, I.M.
cf9964df-bbfc-4057-8cf7-2dfa12eac58c
Anderson, P.S.
56245441-354c-4290-9311-13ef36bf396e
Guerin, S.
e185e0c2-85c6-4d1c-a2cf-cd2f410d346f
Hayden, B.E.
aea74f68-2264-4487-9d84-5b12ddbbb331
Han, Y.
7ff3e82b-2df8-40df-adb9-1e0afb985a86
Pasha, M.
6453e7f7-badd-44ee-bc87-fbd5b071d33e
Whittle, K.R.
543c3a8b-39c3-4ba6-84da-76d8fab170ab
Reaney, I.M.
cf9964df-bbfc-4057-8cf7-2dfa12eac58c

Anderson, P.S., Guerin, S., Hayden, B.E., Han, Y., Pasha, M., Whittle, K.R. and Reaney, I.M. (2009) Optimization of synthesis of the solid solution, Pb(Zr1–xTix)O3 on a single substrate using a high-throughput modified molecular-beam epitaxy technique. Journal of Materials Research, 24 (1), 164-172. (doi:10.1557/JMR.2009.0008).

Record type: Article

Abstract

Synthesis of Pb(Zr1–xTix)O3 (PZT) on a single substrate using a high-throughput molecular-beam epitaxy technique was demonstrated.

In situ synthesis of crystalline PZT at elevated substrate temperatures could not be achieved, as reevaporation of Pb (PbO) occurred and the partial pressure of O2 was insufficient to prevent formation of a PbPtx phase during deposition.

Instead, ex situ postdeposition annealing was performed on PZT deposited at room temperature. Dense single phase PZT was prepared with a compositional range of 0.1 > x > 0.9, for film thicknesses up to 800 nm. Transmission electron microscopy revealed the grain size increased from 50 nm to ~0.5 µm with increasing Zr-concentration and became more columnar. Raman, x-ray diffraction, and scanning electron microscopy/energy dispersive spectroscopy results revealed a morphotropic phase boundary between rhombohedral and tetragonal phases occurred at x ~0.4 rather than at x = 0.47 in bulk ceramics. This was attributed to clamping arising from mismatch in thermal expansion between the film and substrate.

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Published date: January 2009

Identifiers

Local EPrints ID: 159677
URI: https://eprints.soton.ac.uk/id/eprint/159677
PURE UUID: 6e095a35-7eea-490f-8891-fc731b31e7ca
ORCID for B.E. Hayden: ORCID iD orcid.org/0000-0002-7762-1812

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Date deposited: 05 Jul 2010 13:50
Last modified: 08 Oct 2019 00:56

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Contributors

Author: P.S. Anderson
Author: S. Guerin
Author: B.E. Hayden ORCID iD
Author: Y. Han
Author: M. Pasha
Author: K.R. Whittle
Author: I.M. Reaney

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