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Grain oriented PMN-PT and PMN-PZT

Title data

Richter, Thomas ; Schuh, Carsten ; Denneler, Stefan ; Suvaci, Ender ; Moos, Ralf:
Grain oriented PMN-PT and PMN-PZT.
Event: 10th International Conference and Exhibition of the European Ceramic Society , 17.-21.07.2007 , Berlin, Deutschland.
(Conference item: Conference , Other Presentation type)

Abstract in another language

For the performance optimization of piezoelectric ceramics, grain orientation by templated grain growth is a favourable way. Within this work the texturisation of lead based piezoelectric PMN-32PT and PMN-37PT-21PZ matrices was studied by using {001}-oriented SrTiO3 and BaTiO3 templates in order to enhance the dielectric and piezoelectric properties of the resulting ceramics. First, the growth potential of the ST and BT seeds was investigated in both matrices. Therefore, macroscopic {001}-oriented single crystals were embedded and the growth of single crystals in the matrix was promoted by hot pressing and a subsequent sintering step. Analyses of the microstructure showed a single crystal growth in the Pb(Mg1/3Nb2/3)0,68Ti0,32O3 matrix as well as in the Pb(Mg1/3Nb2/3)0,42Ti0,32Zr0,21O3 matrix. A pronounced crystal growth was observed in matrices with an excess 1.5 mol% lead oxide. For texturised ceramics the templates were aligned by tape-casting. The sintering parameters were based on the compiled optimum conditions for the growth of macroscopic single crystals. Because of the dissolution of ST-templates in both matrices the BT-templates are more appropriate for the texturising step. The piezoelectric characterisation showed that the strain of texturised samples was enhanced up to 100% compared to randomly oriented ones.

Further data

Item Type: Conference item (Other)
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 09 Jun 2015 06:46
Last Modified: 06 Apr 2016 08:17