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Ferroelectric-relaxor crossover characteristics in Ba(ZrxTi1-x)O3 ceramics investigated by AFM-piezoresponse study (Articolo in rivista)

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Ferroelectric-relaxor crossover characteristics in Ba(ZrxTi1-x)O3 ceramics investigated by AFM-piezoresponse study (Articolo in rivista) (literal)

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Dan Ricinschi; Cristina Elena Ciomaga; Liliana Mitoseriu; Vincenzo Buscaglia; Masanori Okuyama (2010)
Ferroelectric-relaxor crossover characteristics in Ba(ZrxTi1-x)O3 ceramics investigated by AFM-piezoresponse study
in Journal of the European Ceramic Society; Elsevier Science Ltd., Oxford (Regno Unito)
(literal)

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Dan Ricinschi; Cristina Elena Ciomaga; Liliana Mitoseriu; Vincenzo Buscaglia; Masanori Okuyama (literal)

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In: Journal of the European Ceramic Society, vol. 30 (2) pp. 237 - 241. Electroceramics XI (Manchester, 1-3 September 2008). Elsevier, 2010. (literal)

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Osaka University, Graduate School of Eng. Science, Dept. of Systems Innovation, 1-3, Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan; Dept. of Solid State & Theor. Physics, Al. I. Cuza Univ., Bv. Carol I no. 11, Iasi 700506, Romania; CNR-IENI, Genova (literal)

Titolo

Ferroelectric-relaxor crossover characteristics in Ba(ZrxTi1-x)O3 ceramics investigated by AFM-piezoresponse study (literal)

Abstract

Ba(ZrxTi1-x)O3 ceramics with x = 0.10 and 0.18 prepared via solid state, with high-density, homogeneous microstructures and similar grain size were investigated. The dielectric data showed that the relaxor properties are induced by increasing the Zr vs. Ti fraction x, both compositions showing a combined relaxor-ferroelectric character. The AFM-piezoresponse experiments revealed a few interesting characteristics, as follows: (1) none of the samples could be totally poled or switched, like the normal ferroelectrics; (2) the samples locally present different types of responses (ferroelectric with a strong piezoresponse, field-induced ferroelectric, polar but non-switchable and non-polar regions); (3) both the regions with a natural strong piezoresponse and the ones obtained after poling are larger in size and more stable in time for the sample with x = 0.10 than for x = 0.18; (4) the sample having x = 0.18 has a smaller piezoresponse than the one with x = 0.10. The observed local features are confirming the ferroelectric-relaxor crossover with increasing x, as observed by the analysis of the dielectric data. (literal)

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