Dielectric and microwave reflection properties of M-phase LNT (Li-Nb-Ti-O) solid solutions in X-band frequency range

被引：9
|
作者：
Singh, Ranjeet [1 ]
Bahel, Shalini [1 ]
Narang, Sukhleen Bindra [1 ]
机构：
[1] Guru Nanak Dev Univ, Dept Elect Technol, Amritsar, Punjab, India
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 784卷
关键词：
EMI; X-band; Reflection; Wavelength; Loss tangent; Relative permittivity; TEMPERATURE; CERAMICS; B2O3; COATINGS; ZNO;
D O I：
10.1016/j.jallcom.2019.01.020
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The present paper reports the dielectric and microwave reflection properties of the M-phase Li1+xNb1-xTixO3 (x = 0.06, 0.10, 0.14, 0.18) solid solutions synthesized by solid state reaction method in the X-band (8.2 GHz-12.4 GHz) frequency range. The values of relative permittivity were obtained between 29.86 and 42.83 while loss tangent ranged between 0.034 and 0.091 with change in composition for X-band. Dielectric relaxation behaviour was not observed for all the studied samples in X-band. Composition with x = 0.14 has shown the reflection peak of -0.14782 dB (96.65% reflection) at sample thickness of 2.3 mm and frequency of 9.964 GHz. Compositions x = 0.14 (sample thickness = 2.3 mm) and x = 0.18 (sample thickness = 2.4 mm) show more than 90% reflection in entire X-band frequency range and are suitable candidates for Electromagnetic Interference (EMI) shielding materials or microwave reflectors. (C) 2019 Elsevier B.V. All rights reserved.
引用
收藏
页码：668 / 675
页数：8
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