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CPM8.1 Task 6: evaluation of new functional materials.

Cain, M G; Stewart, M (2001) CPM8.1 Task 6: evaluation of new functional materials. NPL Report. MATC(A)58

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A PMN-PT relaxor electrstrictive and a single crystal PZN-4.5%PT have been evaluated using a range of high and low field piezoelectric characterisation techniques. The performance of electrostrictives under high AC fields gives similar output to a soft PZT. The single srystal exhibited piezoelectric activity 2-3 times that of a soft PZT composition, and the maximum achievable strain was almost an order of magnitude greater. A 95/5 PZT material exhibited a field induced phase transition from antiferroelectric to ferroelectric at around 3.5kV/mm and is associated with a strain of around 0.16%. The fields needed to achieve this dtrain are close to the breakdown strength of the material of around 8kV/mm.

Item Type: Report/Guide (NPL Report)
NPL Report No.: MATC(A)58
Keywords: functional material, single crystal, ferroelectric, piezoelectric, phase change, electrostrictives, metrology
Subjects: Advanced Materials
Advanced Materials > Functional Materials
Last Modified: 02 Feb 2018 13:17
URI: http://eprintspublications.npl.co.uk/id/eprint/2096

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