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FP5

PIRAMID Informe resumido

Project ID: G5RD-CT-2001-00456
Financiado con arreglo a: FP5-GROWTH
País: France

PMN-PT ceramics - Nanopowder by conventional method

PMN-PT powder, (x PbMg1/3Nb2/3O3 + (1-x) PbTiO3), with x ranging from 0.1 to 0.6 have been investigated by the mixed-oxide route.

The process consists to synthesis of the columbite phase in the first step, followed by a second step in which the columbite is reacted with PbO and TiO2 (and possibly various additives) to form the PMN-PT phase. This method allows preventing the formation of pyrochlore phases, which have a deleterious effect on the performances of the ferroelectric phase.

Micometer grain size was obtained by mixed oxide routes and nano powders were obtained either by continuous attrition milling.

Batch of 200g to 500g was prepared.

Reported by

Thales Goup
Domaine de Corbeville
91404 Orsay
France
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