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The analysis of the nonlinearity allows us to suggest higher density of domain walls and\/or their better mobility in graded structure.<\/jats:p>","DOI":"10.1063\/1.3040029","type":"journal-article","created":{"date-parts":[[2008,12,17]],"date-time":"2008-12-17T00:34:19Z","timestamp":1229474059000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":4,"title":["Dielectric nonlinearity in a compositionally graded lead zirconate titanate structure"],"prefix":"10.1063","volume":"104","author":[{"given":"A.","family":"Khodorov","sequence":"first","affiliation":[{"name":"University of Minho Department of Physics, , Campus de Gualtar, 4710-057 Braga, Portugal"}]},{"given":"S. A. 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