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Process of Formation of the Aurivillius Phase Bi 3 NbTiO 9 and Its Substitutes
Author(s) -
Missyul Alexander B.,
Kuzmova Tatiana G.,
Zvereva Irina A.
Publication year - 2011
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201000382
Subject(s) - aurivillius , isothermal process , substitution (logic) , phase (matter) , kinetics , materials science , crystallography , intermetallic , chemistry , thermodynamics , organic chemistry , metallurgy , computer science , physics , optoelectronics , quantum mechanics , dielectric , ferroelectricity , programming language , alloy
Two series of the magnetically substituted Aurivillius phases, Bi 3 NbTi 1– x Mn x O 9 and Bi 2 Ln NbTiO 9 ( Ln = Nd–Ho), were synthesized. The substitution was found to be limited in both cases. The formation mechanism of the unsubstituted compound Bi 3 NbTiO 9 was proposed on the basis of both isothermal and constant rate heating data. The stability of the derivatives of the intermediate compound Bi 4 Ti 3 O 12 appears to be responsible for the observed substitution limits. The kinetics of formation of Bi 3 NbTiO 9 from the binary oxides and the intermediate compounds were studied.