A rapid-doping method for high-throughput discovery applied to thick- film PTCR materials
A rapid-doping method for high-throughput discovery applied to thick- film PTCR materials
A novel high-throughput combinatorial library preparation technique for ceramics requiring low levels of dopant is demonstrated and assessed for the case of donor-doped barium titanate (BT) materials with positive temperature coefficient of resistance (PTCR) materials. The droplet-doping process is performed by infiltrating liquid dopant precursors into porous BT disks and viewed by high speed camera. The resulting dopant distribution in the body of the disk shows high uniformity as assessed by energy dispersive (EDS) and wavelength dispersive (WDS) spectroscopies. X-ray diffraction (XRD) measurements and resistivity-temperature (?-T) curves show evidence of the changes in structure and PTCR profiles with change in composition and are closely matched to previously published data for samples made by conventional ceramic routes. The procedure, thus validated, has the potential to deliver dopant-doped BT-based PTCR libraries rapidly with a very wide range of dopant mixtures and concentrations for electrical property measurement and deserves to be applied to other low level dopant ceramic systems.
droplet doping, high throughput, PTCR, infiltration, barium titanate, droplet-printing
3748-3756
Chen, Yulong
c169c2b5-8f32-4857-8436-42acf15d9ce8
Evans, Julian RG
3bfd4eb9-7a29-4164-8966-937df60160cb
Yang, Shoufeng
e0018adf-8123-4a54-b8dd-306c10ca48f1
20 July 2011
Chen, Yulong
c169c2b5-8f32-4857-8436-42acf15d9ce8
Evans, Julian RG
3bfd4eb9-7a29-4164-8966-937df60160cb
Yang, Shoufeng
e0018adf-8123-4a54-b8dd-306c10ca48f1
Chen, Yulong, Evans, Julian RG and Yang, Shoufeng
(2011)
A rapid-doping method for high-throughput discovery applied to thick- film PTCR materials.
Journal of the American Ceramic Society, 94 (11), .
(doi:10.1111/j.1551-2916.2011.04667.x).
Abstract
A novel high-throughput combinatorial library preparation technique for ceramics requiring low levels of dopant is demonstrated and assessed for the case of donor-doped barium titanate (BT) materials with positive temperature coefficient of resistance (PTCR) materials. The droplet-doping process is performed by infiltrating liquid dopant precursors into porous BT disks and viewed by high speed camera. The resulting dopant distribution in the body of the disk shows high uniformity as assessed by energy dispersive (EDS) and wavelength dispersive (WDS) spectroscopies. X-ray diffraction (XRD) measurements and resistivity-temperature (?-T) curves show evidence of the changes in structure and PTCR profiles with change in composition and are closely matched to previously published data for samples made by conventional ceramic routes. The procedure, thus validated, has the potential to deliver dopant-doped BT-based PTCR libraries rapidly with a very wide range of dopant mixtures and concentrations for electrical property measurement and deserves to be applied to other low level dopant ceramic systems.
Text
drop_doping_30_09_2012_eprint.doc
- Accepted Manuscript
More information
Published date: 20 July 2011
Keywords:
droplet doping, high throughput, PTCR, infiltration, barium titanate, droplet-printing
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 187435
URI: http://eprints.soton.ac.uk/id/eprint/187435
ISSN: 0002-7820
PURE UUID: b60f7521-be1a-4eb6-8691-7ecdffaf5cf8
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Date deposited: 17 May 2011 12:07
Last modified: 14 Mar 2024 03:25
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Contributors
Author:
Yulong Chen
Author:
Julian RG Evans
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