Cation Disorder in Ferroelectric PbBi_2Nb_2O_9

V. SRIKANTH; H. IDINK; W. B. WHITE; E. C. SuBBARAO; H. RAJAGOPAL; A. SEQUEIRA

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Cation Disorder in Ferroelectric PbBi_2Nb_2O_9

机译：铁电PbBi_2Nb_2O_9中的阳离子异常

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The ferroelectric Curie temperature, Tc, of was found to shift from 833 K in samples slowly cooled from 1373 K to Tc's up to 883 K when the samples were quenched from various temperatures in the range 973-1373 K. The variation of Tc with heat treatment was fully reversible. Extra Raman modes appear and the width of some Raman bands change as a function of heat treatment. These results are interpreted in terms of cation order-disorder involving the Pb2+ and Bi3+ ions in the perovskite units and the B12O2 layer. Neutron Rietveld analyses of the structures (orthorhombic, A2m, Z = 4, A = 1.216) indicate a possible change in cationic order-disorder, with Pb2+ ions preferentially occupying the perovskite A-sites to the extent of 91(7) and 80(7)%, respectively, in the quenched and slowly cooled samples.

机译：当样品从973-1373 K范围内的各种温度淬火后，铁电居里温度Tc从缓慢冷却的样品中的833 K转变为从1373 K到Tc的最高883K。治疗是完全可逆的。出现额外的拉曼模式，某些拉曼谱带的宽度随热处理而变化。这些结果是根据涉及钙钛矿单元和B12O2层中Pb2 +和Bi3 +离子的阳离子有序无序来解释的。结构的中子Rietveld分析（斜方晶系，A2 am，Z = 4，A = 1.216）表明阳离子有序性可能发生变化，Pb2 +离子优先占据钙钛矿A-位，达到91（7）和淬火和缓慢冷却的样品分别为80（7）％。

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《Acta Crystallographica, Section B. Structural Science》 |1996年第3期|共8页
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V. SRIKANTH; H. IDINK; W. B. WHITE; E. C. SuBBARAO; H. RAJAGOPAL; A. SEQUEIRA;
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中图分类晶体学;
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1. Cation Disorder in Ferroelectric PbBi_2Nb_2O_9 [J] . V. SRIKANTH, H. IDINK, W. B. WHITE, Acta Crystallographica, Section B. Structural Science . 1996,第3期

机译：铁电PbBi_2Nb_2O_9中的阳离子异常
2. Cation disorder and phase transitions in the four-layer ferroelectric Aurivillius phases ABi(4)Ti(4)O(15) (A = Ca, Sr, Ba, Pb) [J] . Kennedy BJ, Zhou Q, Ismunandar, Journal of Solid State Chemistry . 2008,第6期

机译：四层铁电Aurivillius相ABi（4）Ti（4）O（15）中的阳离子无序和相变（A = Ca，Sr，Ba，Pb）
3. Cation disorder and phase transitions in the four-layer ferroelectric Aurivillius phases ABi(4)Ti(4)O(15) (A = Ca, Sr, Ba, Pb) [J] . Kennedy BJ, Zhou Q, Ismunandar, International Journal of Quantum Chemistry . 2008,第6期

机译：四层铁电Aurivillius相ABi（4）Ti（4）O（15）中的阳离子无序和相变（A = Ca，Sr，Ba，Pb）
4. An X-Ray Study on the Computer Elaboration of Structure Order/Disorder in Pb-Containing Complex Perovskites WITH THE RELAXOR FERROELECTRIC PROPERTIES at Low Temperatures [C] . A. R. Lebedinskaya, N. G. Kasparova International Conference on "Physics, Mechanics of New Materials and Their Applications" . 2018

机译：对含PB含有钙钙质的结构顺序/紊乱的计算机阐述，在低温下具有松弛剂铁电性能
5. Dipole ordering or disordering in selected perovskite ferroelectric systems. [D] . Friddle, Phillip A. 2005

机译：所选钙钛矿铁电系统中的偶极有序或无序。
6. The Effect of Cation Disorder on Ferroelectric Properties of SrxBa1−xNb2O6 Tungsten Bronzes [O] . Solveig S. Aamlid, Sverre M. Selbach, Tor Grande 2019

机译：阳离子紊乱对SrxBa1-xNb2O6钨青铜铁电性能的影响
7. The Effect of Cation Disorder on Ferroelectric Properties of SrxBa1−xNb2O6 Tungsten Bronzes [O] . Solveig S. Aamlid, Sverre M. Selbach, Tor Grande 2019

机译：阳离子紊乱对SRXBA1-XNB2O6钨铜铁电性能的影响
8. Pressure as a probe of the glassy state of ferroelectrics with random site disorder [R] . Samara, G. A., Hansen, L. V. 1998

机译：压力作为具有随机位点紊乱的铁电体的玻璃状态的探针

Cation Disorder in Ferroelectric PbBi_2Nb_2O_9

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