Sintesis dan Karakterisasi Aurivillius LaBi2TiNbO9 dan Bi3TiTaO9

Abstract

Oksida Aurivillius LaBi₂TiNbO₉ dan Bi₃TiTaO₉ telah berhasil disintesis dengan metode reaksi kimia padat, kedua senyawa berstruktur ortorombik. Pengaruh subsitusi kation A menyebabkan perubahan grup ruang A21am menjadi Fmmm dan nilai faktor toleransi perosvkit menurun dari ~ 0,96 menjadi ~ 0,89 pada oksida Aurivillius Bi₃TiTaO₉sehingga perovskit pada senyawa tersebut terdistorsi. Subsitusi pada kation B tidak merubah struktur dan grup ruang. Karakterisasi XRF Oksida Aurivillius LaBi₂TiNbO₉mempunyai komposisi berbeda dengan hasil teori sedangkan komposisi Aurivillius Bi₃TiTaO₉mendekati nilai sebenarya

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