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BaTiO3-(Ni0.5Zn0.5)Fe2O4 ceramic composites with ferroelectric and magnetic properties (Articolo in rivista)

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BaTiO3-(Ni0.5Zn0.5)Fe2O4 ceramic composites with ferroelectric and magnetic properties (Articolo in rivista) (literal)

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L. Mitoseriu; V. Buscaglia; M. Viviani; M.T. Buscaglia; I. Pallecchi; C. Harnagea; A. Testino; V. Trefiletti; P. Nanni; A.S. Siri (2007)
BaTiO3-(Ni0.5Zn0.5)Fe2O4 ceramic composites with ferroelectric and magnetic properties
in Journal of the European Ceramic Society; Elsevier Science Ltd., Oxford (Regno Unito)
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L. Mitoseriu; V. Buscaglia; M. Viviani; M.T. Buscaglia; I. Pallecchi; C. Harnagea; A. Testino; V. Trefiletti; P. Nanni; A.S. Siri (literal)

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In: Journal of the European Ceramic Society, vol. 27 (13-15) pp. 4379 - 4382. Electroceramics X : Tenth International Conference on Electroceramics (Toledo, Spain, 18-22 June 2006). Elsevier, 2007. (literal)

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Department of Solid State & Theoretical Physics, Al. I. Cuza University, Bv. Carol I no. 11, Iasi 700506, Romania; Department Chemical & Process Engineering, University Genoa, P-le Kennedy no. 1, Genoa I-16129, Italy; Institute for Energetics & Interphases-CNR, Via de Marini no. 6, Genoa I-16149, Italy; Physics Department & INFM, University of Genoa, Via Dodecaneso no. 33, Genoa I-16146, Italy; INRS-EMT, University Québec, 1650 Lionel-Boulet, Varennes, Que. J3X 1S2, Canada; Department of Material Science, University Milano Bicocca, Via R. Cozzi no. 53, Milano I-20126, Italy; Institute of Macromolecular Materials-CNR, Via De Marini no. 6, Genoa I-16149, Italy (literal)

Titolo

BaTiO3-(Ni0.5Zn0.5)Fe2O4 ceramic composites with ferroelectric and magnetic properties (literal)

Abstract

Di-phase ceramic composites 0.50BaTiO3-0.50Ni0.5Zn0.5Fe2O4 with limited reaction at interfaces prepared by two methods: (i) mixing BaTiO3 and Ni0.5Zn0.5Fe2O4 powders and (ii) co-precipitation of Fe, Ni, Zn salts in solutions containing BaTiO3 powders, are comparatively analysed. Homogeneous microstructures with higher density and better mixing of the two phases are obtained by the second method and consequently, better dielectric properties (tan delta < 5% and epsilon(tau) is an element of 300-800 for f > 10(4) Hz at room temperature) and higher magnetic moments. Some interface effects are playing important roles on the dielectric properties at low frequencies and high temperatures, mainly in the samples prepared following the method (i). Both the ferroelectric and magnetic phases preserve their basic properties in the bulk composite form and thus, these composites BT-NZF are good candidates as magnetoelectric materials. (literal)

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