Polarization State Studies on PZT Ceramics Using Ultrasonic Velocimetry Methods

Durruthy-Rodríguez, M. D.; Moreno-Hernández, E.; Pérez-Fernández, Leslie D.; Peláiz‐Barranco, A.; Calderón-Piñar, F.; Salas, Lorenzo Leija

doi:10.1080/00150190600695206

Cited by 1 publication

(1 citation statement)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At 1 kHz, the value of the dielectric constant is 546. The dielectric constant of the material which consists of two phase connected in parallel can be given by the equation below:

ε = ε_{PZT} V_{PZT} + ε_{polymer} V_{polymer},

where ε PZT = 1741 12 is the dielectric constant of PZT-5A ceramic and ε polymer = 15 is the dielectric constant of Epoxy 301; V PZT and V polymer denote the volume ratios of PZT-5A and Epoxy 301 in the composite, respectively. Moreover, the mathematic relationship of V PZT and V polymer can be described as the following expression:

V_{PZT} + V_{polymer} = 1 .

Through simultaneous Eqs.…”

Section: Resultsmentioning

confidence: 99%

Novel Lead Zirconate Titanate Composite via Freezing Technology for High Frequency Transducer Applications

Zhu

Zhou

et al. 2011

J. Adv. Dielect.

View full text Add to dashboard Cite

Novel PZT-5A ceramic-polymer composite was prepared via freezing technology. This composite exhibited good dielectric and ferroelectric behaviors. At 1 kHz, the dielectric constant and the dielectric loss were 546 and 0.046, respectively, while the remnant polarization was 13.0 μC/cm2 at room temperature. The electromechanical coupling coefficient (kt) of PZT-5A composite was measured to be 0.54, which is similar to that of PZT piezoelectric ceramic. The piezoelectric coefficient (d33) of PZT-5A composite was determined to be ~250 pC/N. Using this composite, a 58MHz single element transducer with the bandwidth of 70% at −6dB was built, and the insertion loss was tested to be −29dB around the central frequency.

show abstract

“…At 1 kHz, the value of the dielectric constant is 546. The dielectric constant of the material which consists of two phase connected in parallel can be given by the equation below: