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 The authors acknowledge the funding provided by the Center for Dielectric and Piezoelectrics at NCSU. This material is based upon work supported by the National Science Foundation Graduate Research Fellowship for M.J. Burch under Grant No. DGE-0946818. The authors acknowledge the use of the Analytical Instrumentation Facility (AIF) at North Carolina State University. The authors are grateful to professor Marc De Graef for his many contributions to this work.