The progress update of relaxor piezoelectric single crystals

Author

Luo, Jun ; Hackenberger, Wesley ; Zhang, Shujun ; Shrout, Thomas R.

Author_Institution

TRS Technol., Inc., State College, PA, USA

fYear

2009

fDate

20-23 Sept. 2009

Firstpage

968

Lastpage

971

Abstract

A series of relaxor piezoelectric single crystals, including lead magnesium niobate-lead titanate (PMN-PT) and pure and manganese-doped lead indium niobate-lead magnesium niobate-lead titanate (PIN-PMN-PT and Mn: PIN-PMN-PT), have been developed by a modified Bridgman crystal growth process. These single crystals have been grown along both <001> and <110> with diameters up to 75 mm. PIN-PMN-PT possesses the similar electromechanical properties to PMN-PT, while rhombohedral-to-tetragonal phase transition temperature (T_rt) and coercive field (E_C) increased to higher than 120Â°C and 4.5kV/cm, respectively. By doping with Mn, mechanical quality factor (Q_M) increased above 700 in <001>-poled longitudinal mode without compromising electromechanical coupling (k₃₃), T_rt and E_C. This work demonstrated that by composition modification, the electromechanical properties of PMN-PT based crystals can be stabilized with respect to operating temperature and electric field.

Keywords

crystal growth from melt; dielectric polarisation; ferroelectric coercive field; indium compounds; lead compounds; manganese; piezoelectric materials; relaxor ferroelectrics; solid-state phase transformations; <001>-poled longitudinal mode; PMN-PbTiO₃; PbInNiO₃-PMN-PbTiO₃; PbInNiO₃:Mn-PMN-PbTiO₃; coercive field; electromechanical properties; lead magnesium niobate-lead titanate; manganese-doped lead indium niobate-lead magnesium niobate-lead titanate; mechanical quality factor; modified Bridgman crystal growth; relaxor piezoelectric single crystals; rhombohedral-to-tetragonal phase transition temperature; Bioceramics; Crystalline materials; Crystals; Dielectrics; Magnesium; Piezoelectric transducers; Q factor; Raw materials; Temperature; Titanium compounds; Mn:PIN-PMN-PT; PIN-PMN-PT; PMN-PT; piezoelectrics; single crystal;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2009 IEEE International

Conference_Location

Rome

ISSN

1948-5719

Print_ISBN

978-1-4244-4389-5

Electronic_ISBN

1948-5719

Type

conf

DOI

10.1109/ULTSYM.2009.5441884

Filename

5441884