Complex octahedral tilt phases in the ferroelectric perovskite system LixNa1−xNbO3
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چکیده
منابع مشابه
Birefringence and tilt angle in the antiferroelectric, ferroelectric, and intermediate phases of chiral smectic liquid crystals
M. Škarabot, Mojca Čepič, B. Žekš, R. Blinc, G. Heppke, A. V. Kityk,* and I. Muševič J. Stefan Institute, Jamova 39, 1111 Ljubljana, Slovenia Faculty of Education, Kardeljeva ploščad 16, 1000 Ljubljana, Slovenia Institute of Biophysics, Medical Faculty, Lipičeva 2, 1105 Ljubljana, Slovenia Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, Ljubljana, Slovenia Iwan-N-Stra...
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Group-theoretical methods are used to analyze perovskite structures where both ferroelectric cation displacements and simple tilting of octahedral units are present. This results in a list of 40 different structures, each with a unique space-group symmetry. The list is compared with that of Aleksandrov & Bartolomé [Phase Transit. (2001), 74, 255-335] and a number of differences are found. The g...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2018
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.97.224105