Electromechanical properties of BST for acoustic imaging arrays

Author

Kulwicki, B.M.

Author_Institution

Texas Instrum. Inc., Attleboro, MA

Volume

1

fYear

2000

fDate

2000

Firstpage

491

Abstract

BST capacitors possess excellent dielectric and electromechanical properties near FE-PE phase transition under dc bias field. In this work we will present the field and temperature dependencies of the electromechanical properties of (Ba,Sr)TiO₃. Experimental observations will be compared to predictions from the phenomenological theory of ferroelectric phase transitions. Previously developed densely populated two-dimensional BST arrays will be described for potential applications in real time hand-held acoustic camera for underwater divers, medical imaging, and acoustic microscopy

Keywords

acoustic arrays; acoustic imaging; barium compounds; electromechanical effects; ferroelectric capacitors; ferroelectric transitions; strontium compounds; (BaSr)TiO₃; BST capacitor; DC bias field; acoustic microscopy; dielectric properties; electromechanical properties; ferroelectric phase transition; medical imaging; phenomenological theory; real-time hand-held acoustic camera; temperature dependence; two-dimensional acoustic imaging array; underwater diver; Acoustic applications; Acoustic arrays; Acoustic imaging; Binary search trees; Biomedical acoustics; Capacitors; Dielectrics; Ferroelectric materials; Temperature dependence; Underwater acoustics;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2000. ISAF 2000. Proceedings of the 2000 12th IEEE International Symposium on

Conference_Location

Honolulu, HI

ISSN

1099-4734

Print_ISBN

0-7803-5940-2

Type

conf

DOI

10.1109/ISAF.2000.941604

Filename

941604