Core-Shell Composite Nanoparticles by Colloidal Chemistry: a Versatile Approach to the Synthesis of Ferroelectric Materials (INVITED LECTURE) (Comunicazione a convegno)

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  • Core-Shell Composite Nanoparticles by Colloidal Chemistry: a Versatile Approach to the Synthesis of Ferroelectric Materials (INVITED LECTURE) (Comunicazione a convegno) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Alternative label
  • Buscaglia V.; Buscaglia M. T.; Viviani M.; Mitoseriu L.; Alessio R.; Zhao Z.; Nanni P. (2007)
    Core-Shell Composite Nanoparticles by Colloidal Chemistry: a Versatile Approach to the Synthesis of Ferroelectric Materials (INVITED LECTURE)
    in 19th International Symposium of Integrated Ferroelectrics - ISIF 2007, Bordeaux, France
    (literal)
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  • Buscaglia V.; Buscaglia M. T.; Viviani M.; Mitoseriu L.; Alessio R.; Zhao Z.; Nanni P. (literal)
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  • In: 19th International Symposium of Integrated Ferroelectrics - ISIF 2007 (Bordeaux, France, 8-11 May 2007). Proceedings, pp. 10 - 10. ICMCB, 2007. (literal)
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  • Dielectric and ferroelectric materials have important commercial applications such as multilayer ceramic capacitors, tunable microwave devices, underwater transducers, actuators, random access memories, thermistors with positive temperature coefficient of resistivity. Devices have continued to evolve in two primary directions: increased performances (higher capacitance, lower dielectric losses, better tunability, new functionalities, etc.) and smaller size (miniaturization). Fabrication of next generations of devices will require the synthesis of well dispersed, small and uniform particles, the realization of tailored microstructures, the control of grain size and grain boundary properties, the development of graded and composite structures. The concept of core-shell particles can be efficiently used for the fabrication of different dielectric and ferroelectric materials with specific particle/grain size, composition and microstructure. Three examples will be discussed to illustrate the versatility of this approach. Synthesis of nanoparticles by solid-state reaction. The maximization of the contact surface between two solid reactants in the core-shell geometry and the concomitant decrease of the diffusion distance lead to a significant lowering of the temperature required for the solid-state reaction. Composite BaCO3@TiO2 particles (see Fig. 1), consisting of a BaCO3 core and a TiO2 shell, represent a convenient precursor for the synthesis of dense, tetragonal BaTiO3 nanopart (literal)
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  • Institute for Energetics and Interphases, National Research Council, via De Marini 6, I-16149 Genoa, Italy Department of Solid State and Theoretical Physics, Al. I. Cuza University, Bv. Carol I 11, 700506 Iasi, Romania Department of Chemistry and Process Engineering, University of Genoa, P.le Kennedy 1, I-16149 Genoa, Italy. Solvay Bario e Derivati, Via degli Oliveti 84, I-54100 Massa, Italy Department of Inorganic Chemistry, University of Stockholm, S106 91 Stockholm, Sweden, (literal)
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  • Core-Shell Composite Nanoparticles by Colloidal Chemistry: a Versatile Approach to the Synthesis of Ferroelectric Materials (INVITED LECTURE) (literal)
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