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Incorporation of Antimony into the Barium Titanate Lattice
Author(s) -
Schmelz H.
Publication year - 1969
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19690310114
Subject(s) - antimony , barium titanate , electron microprobe , curie temperature , materials science , electrical resistivity and conductivity , lattice (music) , perovskite (structure) , solid solution , analytical chemistry (journal) , crystal structure , lattice constant , barium , crystallography , ceramic , microprobe , mineralogy , diffraction , condensed matter physics , chemistry , metallurgy , optics , physics , ferromagnetism , chromatography , quantum mechanics , acoustics
The interest in the incorporation of Sb into the BaTiO 3 lattice is based above all on the fact that small additions of Sb (below 0.2 wt% Sb 2 O 3 ) yield semiconducting ceramics with a resistivity anomaly at the Curie point. Larger amounts of Sb, however, result in insulating samples. This is caused by a different kind of incorporation. In the range of high concentration only a composition as BaO + (1 − x ) · TiO 2 + x · 1/2 Sb 2 O 3 (for x between 0 and 0.1) yields ceramics which show no crystalline phases other than the perovskite one. This and the structure factors determined by neutron diffraction provide a definite proof that Sb occupies Ti sites. By means of combined electron‐microprobe and X‐ray analysis it is also shown that in the case of excess TiO 2 in the BaTiO 3 solid solution, Sb partly substitutes Ba sites.