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Dependence of the Crystal Structure on Particle Size in Barium Titanate
Author(s) -
Uchino Kenji,
Sadanaga Eiji,
Hirose Terukiyo
Publication year - 1989
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.1151-2916.1989.tb07706.x
Subject(s) - barium titanate , tetragonal crystal system , particle size , materials science , curie temperature , crystal structure , particle (ecology) , crystal (programming language) , atmospheric temperature range , condensed matter physics , mineralogy , crystallography , chemistry , composite material , ceramic , thermodynamics , physics , ferromagnetism , oceanography , computer science , programming language , geology
The effect of the sample particle size on the crystal structure and the Curie temperature of BaTiO 3 powder has been investigated in the particle size range 0.1 to 1.0 μm. The transformation from tetragonal to cubic symmetry occurs at a critical particle size of 0.12 μm at room temperature, and the Curie temperature drops below room temperature at the critical particle size.