Title of article :
Synthesis and microwave dielectric properties of Sr3Zn1−xMgxNb2O9 phases
Author/Authors :
Thirumal، نويسنده , , Meganathan and Jawahar، نويسنده , , Isuhak N. and Surendiran، نويسنده , , Kuzhichalil P. and Mohanan، نويسنده , , Pezholil and Ganguli، نويسنده , , Ashok K.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
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.
Keywords :
A. Ceramics , A. Electronic materials , A. Oxides , D. Dielectric properties , C. X-ray diffraction
Journal title :
Materials Research Bulletin
Journal title :
Materials Research Bulletin
