Role of Mn Doping on the Electromechanical Properties of [001] Domain Engineered Single crystals

Author

Guennou, M. ; Augier, C. ; Dammak, H. ; Thi, M. Pham ; Gaucher, P.

Author_Institution

Ecole Centrale Paris, Chatenay-Malabry

fYear

2006

fDate

July 30 2006-Aug. 3 2006

Firstpage

265

Lastpage

268

Abstract

We studied the influence of Mn doping on electromechanical properties of PZN-xPT with x = 7% and 9%. Single crystals oriented along the [111], [011] and [001] directions were poled by a "field cooling" process with an applied electric field of 1 kV/cm. It is shown that Mn doping has a significant influence on the single domain crystals in both cases. It modifies the phase symmetry of single domain PZN-7PT from orthorhombic to rhombohedral. It reduces permittivity perpendicular to polarization direction of single domain PZN-9PT by about 40%. This change in the properties of the bulk material is the main cause for the decrease of permittivity observed in [001] poled PZN-9PT crystals. Further effects of doping on the properties of [001] domain engineered crystals are a decrease of the piezoelectric coefficient, a hardening of the material and an increase of the mechanical quality factor.

Keywords

dielectric polarisation; doping; electric domains; lead compounds; manganese; permittivity; piezoelectricity; relaxor ferroelectrics; Mn doping influence; PbZrO₃NbO₃-PbTiO₃:Mn; electromechanical properties; hardening; mechanical quality factor; permittivity; phase symmetry; piezoelectric coefficient; polarization; poling; single domain crystals; Cooling; Crystalline materials; Crystals; Doping; Mechanical factors; Permittivity; Phase change materials; Piezoelectric materials; Piezoelectric polarization; Q factor; PZN-PT; domain engineering; manganese; piezoelectric; single crystal;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of ferroelectrics, 2006. isaf '06. 15th ieee international symposium on the

Conference_Location

Sunset Beach, NC

ISSN

1099-4734

Print_ISBN

978-1-4244-1331-7

Electronic_ISBN

1099-4734

Type

conf

DOI

10.1109/ISAF.2006.4387882

Filename

4387882