Polar State in Li-Doped SrTiO3

被引：4
作者：
Sotnikov, A. V. [1 ,2 ]
Smirnova, E. P. [1 ]
Schmidt, H. [2 ]
Weihnacht, M. [2 ]
Lemanov, V. V. [1 ]
机构：
[1] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
[2] Leibniz Inst Solid State & Mat Res Dresden, D-01069 Dresden, Germany
来源：
FERROELECTRICS | 2010年 / 405卷
关键词：
DIELECTRIC-RELAXATION; PHASE-TRANSITIONS; QUANTUM; FERROELECTRICS; SR1-XCAXTIO3; SR1-XBAXTIO3; CLUSTER;
D O I：
10.1080/00150193.2010.482882
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of Li on the phase state of SrTiO3 was studied to clarify the predominant factors of induced polar state in incipient ferroelectrics. Dielectric, ultrasonic and polarization loops measurements were carried out in a temperature range of 3-350 K using ceramic samples of LixSr1-xTiO3-x/2 (0 x 0.05). The observed relaxor-like features are attributed to a possible polar state arising from off-centre Li+ ions in the perovskite SrTiO3 lattice. The transition from the thermally activated regime to quantum tunneling is observed at T 6 K.
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收藏
页码：13 / 19
页数：7
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