Properties of lanthanide containing Aurivillius phases Ln2Bi3FeTi3O15 (Ln = La, Pr, Nd, Sm, Gd)

被引：1

作者：

Mitrofanova, A., V ^{[1
]}

Fortalnova, E. A. ^{[1
]}

Safronenko, M. G. ^{[1
]}

Politova, E. D. ^{[2
]}

机构：

[1] RUDN Univ, Moscow, Russia

[2] Russian Acad Sci, Semenov Inst Chem Phys, Moscow, Russia

来源：

FERROELECTRICS | 2022年 / 590卷 / 01期

关键词：

Aurivillius phases; ferroelectric phase transition; layered perovskite-like structures; MAGNETIC-PROPERTIES; DIELECTRIC-PROPERTIES; TRANSITIONS;

D O I：

10.1080/00150193.2022.2037934

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The phase formation in the series Ln(2)Bi(3)FeTi(3)O(15) (Ln = La, Pr, Nd, Sm, Gd) was studied. It was found that the layered perovskite structure was formed after annealing at 1000 degrees C. Further increase in the synthesis temperature to 1100 degrees C did not affect the phase composition, excluding Gd-containing sample, where perovskite structure was partially destroyed to form the pyrochlore phase based on Bi2Ti2O7. Reversible anomalies obtained by differential thermal analysis indicate the phase transitions with a change in the crystal lattice symmetry in case of a perovskite-like phase and a transition of the order-disorder type in case of a pyrochlore structure.

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页码：9 / 16

页数：8

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