Growth and properties of PMN-PT single crystals

Citation
X. Jiang et al., Growth and properties of PMN-PT single crystals, PHYSICA C, 364, 2001, pp. 678-683
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
0921-4534 → ACNP
Volume
364
Year of publication
2001
Pages
678 - 683
Database
ISI
SICI code
0921-4534(200111)364:<678:GAPOPS>2.0.ZU;2-B
Abstract
Piezoelectric single crystals of Pb(Mg1/3Nb2/3)O-3-PbTiO3 (PMN-PT) show sup erior properties to piezoelectric ceramics and piezoelectric films in devic e applications. However., the applications of PMN-PT single crystals are li mited by the lack of a simple and reproducible fabrication technique. By st udying the effect of fabrication condition on the growth of PMN-PT single c rystals in the flux method, we successfully obtained PMN-PT single crystals . The size of the obtained crystals varied from I to 4 mm, mostly showing r egular cubic shape. X-ray diffraction technique identified the crystal phas e was PMN-PT. Electron diffraction spectroscope analysis indicated that the composition of the single crystals was closed to the designed solid soluti on. The (0 0 1) single crystals showed a dielectric constant peak of 15,200 at 42 degreesC. The crystals had a remnant polarization 16 muc/cm(2). a sp ontaneous polarization 22.1 muc/cm(2), and a coercive field 2.55 kV/cm. Our measurement indicated the temperature dependence and frequency dependence of the dielectric constant and dielectric loss of PMN-PT single crystals. T he results will be a great help for the applications of PMN-PT single cryst als. Published by Elsevier Science B.V.