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Processing and characterization of 〈001〉-textured Pb(Mg1/3Nb2/3)O3–Pb(Yb1/2Nb1/2)O3–PbTiO3 ceramics

Published online by Cambridge University Press:  29 May 2017

Cihangir Duran*
Affiliation:
Metallurgical and Materials Engineering Department, Ankara Yıldırım Beyazıt University, Ankara 06010, Turkey
Salih Cengiz
Affiliation:
Metallurgical and Materials Engineering Department, Ankara Yıldırım Beyazıt University, Ankara 06010, Turkey
Nazım Ecebaş
Affiliation:
Metallurgical and Materials Engineering Department, Ankara Yıldırım Beyazıt University, Ankara 06010, Turkey
Sinan Dursun
Affiliation:
Materials Science and Engineering Department, Gebze Technical University, Gebze, Kocaeli 41400, Turkey
Erdem Akça
Affiliation:
Metallurgical and Materials Engineering Department, Cumhuriyet University, Sivas 58140, Turkey
*
a) Address all correspondence to this author. e-mail: cduran@ybu.edu.tr
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Abstract

0.62[0.75(Pb(Mg1/3Nb2/3)O3)–0.25(Pb(Yb1/2Nb1/2)O3)]–0.38(PbTiO3) ceramics were successfully textured in [001] via the template grain growth method using 1–7 vol% platelike BaTiO3 (BT) templated (the Lotgering factor of 0.91 at 5 vol% BT). Dielectric spectra indicated a normal ferroelectric behavior without any frequency dispersion and no low-temperature phase transition. The chemically stable BT phase within the matrix gave rise to a composite effect and its relatively inferior properties affected the dielectric and electromechanical properties. The lower T C of the BT decreased the Curie temperature from 226 to 213 °C (with a depolarization temperature of 204 °C). Significantly higher levels of strain (0.33%), narrower hysteresis level (7.7%), higher piezoelectric strain coefficient (660 pm/V), and low-field (<5 kV/cm) piezoelectric strain coefficient (1340 pm/V) at 50 kV/cm were achieved at 5 vol% BT addition. These results are very promising for the fabrication of high performance transducer and actuator applications without severe temperature limitations.

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Copyright © Materials Research Society 2017 

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