EZEALIGO, Blessing; ORRÙ, Roberto; ELISSALDE, Catherine; DEBÉDA, Hélène; CHUNG, U-Chan; MAGLIONE, Mario; CAO, Giacomo

doi:10.1016/j.ceramint.2020.09.210

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EZEALIGO, Blessing
Dipartimento di Ingegneria Meccanica, Chimica e dei Materiali

ORRÙ, Roberto
Dipartimento di Ingegneria Meccanica, Chimica e dei Materiali

ELISSALDE, Catherine
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Ceramics International. 2021, vol. 47, n° 3, p. 3614-3625

Elsevier

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In this work, structural and dielectric properties of BaTi(1-x)ZrxO3 (BTZ) ceramics prepared by Spark Plasma Sintering (SPS) from powders obtained via Self-propagating High-temperature Synthesis (SHS) are shown to be strongly affected by the sintering temperature. In addition, a post-annealing treatment in air of the as-prepared ceramics leads to a transition from the hexagonal to the tetragonal and cubic phases. The SPS ceramics corresponding to compositions 0.05 ≤ x ≤ 0.20 and obtained at a sintering temperature of 1200 °C exhibit a standard ferroelectric behavior. In contrast, a diffuse phase transition is observed for the case of ceramics sintered at higher temperatures. Finally, the BTZ ceramic containing 5 at.% of Zr displays the best dielectric permittivity and piezoelectric properties as compared to the other compositions taken into account.< Réduire

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Dielectric permittivity

Spark plasma sintering

Piezoelectric

Post-annealing

Self-propagating high-temperature synthesis

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Influence of the Spark Plasma Sintering temperature on the structure and dielectric properties of BaTi(1-x)ZrxO3 ceramics

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