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Synthesis and microwave dielectric properties of Sr3Zn1−xMgxNb2O9 phases

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Author: Thirumal, Meganathan; Jawahar, Isuhak N; Surendiran, Kuzhichalil P; Mohanan, Pezholil; Ganguli, Ashok K

Advisor: Advisor

Date: 2002

Publisher:
Citation: Materials

Series/Report no.:
Item Type: Article

Keywords: Ceramics; Electronic materials; Oxides; X-ray diffraction; Dielectric properties

Abstract: Oxides of the type, Sr3Zn1−xMgxNb2O9 (0≤x≤1) have been obtained by the ceramic method. These oxides crystallize in the hexagonal cell corresponding to ordered triple perovskites. Sintered disks show nearly frequency-independent dielectric constant for all the compositions. Compositions sintered at 1425°C yield dielectric constant of 20–22 at 6 GHz, with quality factor ranging from 1300 to 1500. Sr3Zn0.5Mg0.5Nb2O9 shows a very low temperature coefficient of resonant frequency (τf) of +4 ppm/°C.
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Shankar B. Chavan
Computer Applications Division
Central Library, IIT Delhi
shankar.chavan@library.iitd.ac.in
NDLTD
Shodhganga
NDL
ePrints@IISc
etd@IISc
IR@IIT Bombay
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