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Manufacture and measurement of combinatorial libraries of dielectric ceramics - part II. dielectric measurements of Ba1-xSrxTiO3 libraries

Manufacture and measurement of combinatorial libraries of dielectric ceramics - part II. dielectric measurements of Ba1-xSrxTiO3 libraries
Manufacture and measurement of combinatorial libraries of dielectric ceramics - part II. dielectric measurements of Ba1-xSrxTiO3 libraries
Applying combinatorial methods to materials science offers the opportunity to accelerate the discovery of more efficient dielectric ceramics. High-throughput methods have the potential to investigate the effects of a wide range of dopants on the dielectric properties, and to optimise existing systems, encouraging the short innovation cycles that the communications technology industry requires. The London University Search Instrument (LUSI) is a fully automated, high-throughput combinatorial robot that has the potential capability to produce large numbers of sintered bulk ceramic samples with varying composition in 1 day, as combinatorial libraries on alumina substrates. Bat-xSrxTiO3 (BST) libraries were produced by LUSI as a proof-of-principle, with x= 0-1 in steps of 0.1, and fired to 1350 and 1400 °C for 1 h. Part I of this paper described the manufacture and physical characterisation of BST libraries, showing a regular change in composition with x across the libraries. In this second part, the dielectric properties of BST libraries produced by LUSI are assessed at frequencies between 100 Hz and 1 MHz, and at temperatures between 150 and 500 K. Local piezoelectric properties were also characterised by scanning probe microscope (SPM). All measurements showed evidence of a clear functional gradient varying with x across the library, with measured ?r corresponding to expected values for BST.
combinatorial high-throughput, batiO3 and titanates, dielectric properties, piezoelectric properties
0955-2219
4437-4443
Pullar, Robert C.
eb861cfb-a56c-4a02-9156-f6b469e232fe
Zhang, Yong
a398822e-74d7-424e-8efc-bf8307927312
Chen, Lifeng
5e67c8cc-4317-4ceb-9d78-74cbc4beb8cd
Yang, Shoufeng
e0018adf-8123-4a54-b8dd-306c10ca48f1
Evans, Julian R. G.
1e4ff64d-fdc6-460e-ae9f-f41746899f57
Petrov, Peter Kr.
41c39169-9194-4194-aeba-7e87642ca458
Salak, Andre N.
1e30c897-9114-4013-8710-dd89b90c2c6e
Kiselev, Dmitry A.
cdb7943c-064c-409f-952e-50e5aba498cf
Kholkin, Andrei L.
6fa6219b-9dd7-4497-8b83-473ee43ff364
Ferreira, Victor M.
b5769ef1-0b1c-472e-9949-cbbb32fa0692
Alford, Neil McN.
952831a8-1504-420d-a05a-85374f02a287
Pullar, Robert C.
eb861cfb-a56c-4a02-9156-f6b469e232fe
Zhang, Yong
a398822e-74d7-424e-8efc-bf8307927312
Chen, Lifeng
5e67c8cc-4317-4ceb-9d78-74cbc4beb8cd
Yang, Shoufeng
e0018adf-8123-4a54-b8dd-306c10ca48f1
Evans, Julian R. G.
1e4ff64d-fdc6-460e-ae9f-f41746899f57
Petrov, Peter Kr.
41c39169-9194-4194-aeba-7e87642ca458
Salak, Andre N.
1e30c897-9114-4013-8710-dd89b90c2c6e
Kiselev, Dmitry A.
cdb7943c-064c-409f-952e-50e5aba498cf
Kholkin, Andrei L.
6fa6219b-9dd7-4497-8b83-473ee43ff364
Ferreira, Victor M.
b5769ef1-0b1c-472e-9949-cbbb32fa0692
Alford, Neil McN.
952831a8-1504-420d-a05a-85374f02a287

Pullar, Robert C., Zhang, Yong, Chen, Lifeng, Yang, Shoufeng, Evans, Julian R. G., Petrov, Peter Kr., Salak, Andre N., Kiselev, Dmitry A., Kholkin, Andrei L., Ferreira, Victor M. and Alford, Neil McN. (2007) Manufacture and measurement of combinatorial libraries of dielectric ceramics - part II. dielectric measurements of Ba1-xSrxTiO3 libraries. Journal of the European Ceramic Society, 27 (16), 4437-4443. (doi:10.1016/j.jeurceramsoc.2007.04.008).

Record type: Article

Abstract

Applying combinatorial methods to materials science offers the opportunity to accelerate the discovery of more efficient dielectric ceramics. High-throughput methods have the potential to investigate the effects of a wide range of dopants on the dielectric properties, and to optimise existing systems, encouraging the short innovation cycles that the communications technology industry requires. The London University Search Instrument (LUSI) is a fully automated, high-throughput combinatorial robot that has the potential capability to produce large numbers of sintered bulk ceramic samples with varying composition in 1 day, as combinatorial libraries on alumina substrates. Bat-xSrxTiO3 (BST) libraries were produced by LUSI as a proof-of-principle, with x= 0-1 in steps of 0.1, and fired to 1350 and 1400 °C for 1 h. Part I of this paper described the manufacture and physical characterisation of BST libraries, showing a regular change in composition with x across the libraries. In this second part, the dielectric properties of BST libraries produced by LUSI are assessed at frequencies between 100 Hz and 1 MHz, and at temperatures between 150 and 500 K. Local piezoelectric properties were also characterised by scanning probe microscope (SPM). All measurements showed evidence of a clear functional gradient varying with x across the library, with measured ?r corresponding to expected values for BST.

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More information

Published date: 2007
Keywords: combinatorial high-throughput, batiO3 and titanates, dielectric properties, piezoelectric properties
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 165055
URI: http://eprints.soton.ac.uk/id/eprint/165055
ISSN: 0955-2219
PURE UUID: 1dbfb95e-2154-4976-86cd-34094bba4b13
ORCID for Shoufeng Yang: ORCID iD orcid.org/0000-0002-3888-3211

Catalogue record

Date deposited: 07 Oct 2010 08:49
Last modified: 14 Mar 2024 02:09

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Contributors

Author: Robert C. Pullar
Author: Yong Zhang
Author: Lifeng Chen
Author: Shoufeng Yang ORCID iD
Author: Julian R. G. Evans
Author: Peter Kr. Petrov
Author: Andre N. Salak
Author: Dmitry A. Kiselev
Author: Andrei L. Kholkin
Author: Victor M. Ferreira
Author: Neil McN. Alford

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