The structural mechanisms of pressure-induced phase transitions in the Carpy-Galy phase layered perovskites

被引：0
|
作者：
Asadov, A. G. [1 ,2 ,3 ]
Kozlenko, D. P. [2 ]
Mammadov, A. I. [1 ]
Mehdiyeva, R. Z. [1 ]
Lukin, E., V [2 ]
Kichanov, S. E. [2 ]
机构：
[1] Minist Sci & Educ Republ Azerbaijan, Inst Phys, Baku AZ-1143, Azerbaijan
[2] JINR, Frank Lab Neutron Phys, Joliot Curie str 6, Dubna 141980, Moscow, Russia
[3] Khazar Univ, AZ-1096 Baku, Azerbaijan
来源：
SOLID STATE SCIENCES | 2024年 / 156卷
关键词：
LN(2)TI(2)O(7) LN; CRYSTAL-STRUCTURE; FERROELECTRICITY; TEMPERATURE; PR; ND;
D O I：
10.1016/j.solidstatesciences.2024.107676
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
In layered perovskites with the Carpy-Galy structural type, similar structural phase transitions occur under high pressure. These structural changes, which are crucial for the pressure-induced phase transition in layered perovskite, were analyzed based on experimental X-ray diffraction data. The tilting of the Ti-O6 6 octahedra and the distortion of the arrangement of rare-earth atoms were studied in detail. Changes in these structural features in layered perovskite serve as common indicators of the phase transition to the monoclinic phase that occurs under high pressure application.
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页数：6
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