Continuous BaTi1−yZryO3 (0≤y≤1) nanocrystals synthesis in supercritical fluids for nanostructured lead-free ferroelectric ceramics
Language
en
Article de revue
This item was published in
Materials & Design. 2015, vol. 86, p. 354-360
Elsevier
English Abstract
This paper addresses for the first time two of the main challenges in the field of electroceramics. The first one is the development of a continuous, fast and reliable synthesis method for producing sub-20 nm barium titanate ...Read more >
This paper addresses for the first time two of the main challenges in the field of electroceramics. The first one is the development of a continuous, fast and reliable synthesis method for producing sub-20 nm barium titanate zirconate (BaTi1-yZryO3 with 0 ≤ y ≤ 1–BTZ) nanocrystals over the whole solid solution, while keeping a narrow size distribution. The second one concerns the processing of dense and nanostructured lead free electroceramics highlighting the size effect on the crossover from ferroelectric to relaxor, in the case of grains smaller than 100 nm. This was achieved combining the supercritical fluid technology to produce in continuous and at moderate temperature (400 °C) BTZ nanocrystals, with Spark Plasma Sintering (SPS) to prevent grain growth during the sintering.Read less <
English Keywords
Barium titanate zirconate (BTZ)
Supercritical fluid
Nanocrystal
Nanostructured ceramic
Lead free
Ferroelectric
Relaxor
ANR Project
Corrélations entre Architecture, Interfaces et Fonctionnalités dans les multi-matériaux Ferroélectriques :Frittage Flash et caractérisations multi-échelle 3D - ANR-12-BS08-0009
Origin
Hal imported