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Synthesis, Characterization, and Spectroscopic Analysis of Nd x Y 1− x TiNbO 6 Microwave Ceramics
Author(s) -
Joseph Shyla,
Suresh Madukayil Kunjoonju,
Thomas Jijimon Kumpukkatu,
John Annamma,
Solomon Sam
Publication year - 2010
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2009.02465.x
Subject(s) - materials science , temperature coefficient , ceramic , analytical chemistry (journal) , microwave , scanning electron microscope , calcination , sintering , dielectric , atmospheric temperature range , perovskite (structure) , diffraction , resonator , solid solution , crystallography , optics , thermodynamics , optoelectronics , composite material , metallurgy , physics , biochemistry , chemistry , chromatography , quantum mechanics , catalysis
Solid solutions of Nd x Y 1− x TiNbO 6 ceramics were prepared through the solid‐state ceramic route. The materials were calcined at 1250°C and sintered in the range 1400–1550°C. The structure of the system was analyzed using the X‐ray diffraction and vibrational spectroscopic analysis. The morphology and the sintering behavior of the samples were analyzed using scanning electron microscopy. The dielectric constant (ɛ r ), temperature coefficient of resonant frequency (τ f ), and the unloaded quality factor ( Q u ) were measured in the microwave frequency region using the cavity resonator method. The ɛ r and τ f increased with an increase in the concentration of Nd in the solid solutions. Nearly zero temperature coefficient of resonant frequency was obtained for the Nd 0.6 Y 0.4 TiNbO 6 ceramic. Samples are of high quality factor and are useful for microwave applications.