Английская Википедия:Aurivillius phases

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Версия от 06:53, 4 февраля 2024; EducationBot (обсуждение | вклад) (Новая страница: «{{Английская Википедия/Панель перехода}} '''Aurivillius phases''' are a form of perovskite represented by the general formulae is (Bi<sub>2</sub>O<sub>2</sub>)(A<sub>''n''−1</sub>B<sub>''n''</sub>O<sub>3''n''+1</sub>) (where A is a large 12 co-ordinate cation, and B is a small 6 co-ordinate cation).<ref>{{Cite journal |last1=Frit |first1=B. |last2=Mercurio |first2=J. P. |date=1992-10-19 |title=The...»)
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Aurivillius phases are a form of perovskite represented by the general formulae is (Bi2O2)(An−1BnO3n+1) (where A is a large 12 co-ordinate cation, and B is a small 6 co-ordinate cation).[1]

Basically, their structure is built by alternating layers of [Bi2O2]2+ and pseudo-perovskite blocks, with perovskite layers that are n octahedral layers in thickness.[2][3] This crystal structure was first described in 1949 by Swedish chemist Bengt Aurivillius.[4] The first interest in Aurivillius phases arose from the observation of ferroelectricity even for the simplest member, Bi2WO6 (n=1) of this crystallographic family.[5] The Mo-homologous Aurivillius phase Bi2MoO6 was recently investigated as a potential LTCC material. Their oxide ion-conducting properties of Aurivillius phases were first discovered in the 1970s by Takahashi et al., and they have been used too for this purpose ever since.[6]

Aurivillius phase oxide materials are a class of lead-free ceramics.[7][8]

See also

References

Шаблон:Reflist

Шаблон:Oxide-mineral-stub