Dielectric Properties of La2Ti2O7 Ceramics

被引：2
|
作者：
Swami, Ravina [1 ]
Sreenivas, K. [1 ]
机构：
[1] Univ Delhi, Dept Phys & Astrophys, Delhi 110007, India
来源：
ADVANCES IN BASIC SCIENCES (ICABS 2019) | 2019年 / 2142卷
关键词：
Solid State Reaction; X-ray diffraction; Dielectric property; Impedance spectroscopy; SPECTROSCOPY; IMPEDANCE;
D O I：
10.1063/1.5122350
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
La2Ti2O7 ceramics prepared by solid state reaction method have been studied for their structural and dielectric properties. At room temperature (25 degrees C), La2Ti2O7 ceramics exhibit intrinsic dielectric response with a dielectric constant similar to 41 and dielectric loss similar to 10(-2) at f = 1 MHz. Impedance spectroscopy in the frequency range 1Hz to 1 MHz reveals grain and grain boundary effects with estimated grain resistances (R-g similar to 1.01.106 Omega) and grain boundary resistance (R-gb similar to 5.4x10(6) Omega). The room temperature dc resistivity is estimated to be 5.615x10(7) Omega cm for La2Ti2O7 ceramics sintered at 1200 degrees C for 24 hours.
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页数：5
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