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Domain engineering in compositionally graded ferroelectric films for enhanced dielectric response and tunability
 

Summary: Domain engineering in compositionally graded ferroelectric films
for enhanced dielectric response and tunability
M. B. Okatan,1
A. L. Roytburd,2
J. V. Mantese,3
and S. P. Alpay1,a
1
Materials Science and Engineering Program and Institute of Materials Science, University of Connecticut,
Storrs, Connecticut 06269, USA
2
Department of Materials Science and Engineering, University of Maryland, College Park,
Maryland 20742, USA
3
United Technologies Research Center, East Hartford, Connecticut 06108, USA
Received 10 March 2009; accepted 3 May 2009; published online 10 June 2009
Functional materials with nonlinear dielectric response are ideally suited for telecommunications
applications and threat detection in beam-steering and frequency tuning devices. Developing the
theory of wedge domain in graded ferroelectrics, we present herein a quantitative model of domain
evolution and dielectric response of compositionally graded ferroelectric multilayers. We show that
the domain structure adapts itself to the applied electric field via domain modification. As the

  

Source: Alpay, S. Pamir - Department of Materials Science and Engineering, University of Connecticut

 

Collections: Materials Science