Adjustable dielectric properties of BaTiO3 containing MgO inclusions deformable under Spark Plasma Sintering

Romain Epherre (1) , Julien Lesseur (2) , Marjorie Albino (2) , Philippe Veber (2) , Alicia Weibel (1) , Geoffroy Chevallier (1) , Mario Maglione (2) , Dominique Bernard (2) , Catherine Elissalde (2) , Claude Estournès (1)

1 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux
2 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux

Spark Plasma Sintering (SPS) is an efficient technique to produce highly densified ferroelectric–dielectric composites with good control of the interfaces and microstructures. We present an effective approach based on precursor preparation to produce BaTiO3/MgO with adjustable hardness for the inclusions. The influence of their rigidity on the sintering composites was investigated and the possibility of being able to tailor the permittivity simply by changing the morphology of the MgO inclusions was demonstrated.

Domaines: Matériaux

Romain Epherre, Julien Lesseur, Marjorie Albino, Philippe Veber, Alicia Weibel, et al.. Adjustable dielectric properties of BaTiO3 containing MgO inclusions deformable under Spark Plasma Sintering. Scripta Materialia, 2016, 110, pp.82-86. ⟨10.1016/j.scriptamat.2015.08.006⟩. ⟨hal-01233631⟩