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Nanosized Barium Titanate Powder by Mechanical Activation
Author(s) -
Xue Junmin,
Wang John,
Wan Dongmei
Publication year - 2000
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2000.tb01179.x
Subject(s) - nanocrystalline material , barium titanate , crystallite , materials science , transmission electron microscopy , scherrer equation , perovskite (structure) , phase (matter) , particle size , chemical engineering , mineralogy , analytical chemistry (journal) , composite material , ceramic , crystallography , metallurgy , nanotechnology , chemistry , organic chemistry , engineering , chromatography
Mechanical activation, without any additional heat treatment, is used to trigger the formation of a perovskite BaTiO 3 phase in an oxide matrix that consists of BaO and TiO 2 in a nitrogen atmosphere. The resulting BaTiO 3 powder exhibits a well‐established nanocrystalline structure, as indicated by phase analysis using X‐ray diffractometry. A crystallite size of ∼14 nm is calculated, based on the half‐width of the BaTiO 3 (110) peak, using the Scherrer equation, and an average particle size of 20–30 nm is observed using transmission electron microscopy for the activation‐derived BaTiO 3 powder.