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Exploring Nanocrystalline Europium Titanium Niobate as a Dielectric Resonator

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Title Exploring Nanocrystalline Europium Titanium Niobate as a Dielectric Resonator
 
Creator John, Fergy
 
Subject Orthorhombic aeschynite structure
Dielectric resonator
Nanocrystalline ceramic
Combustion technique
Dielectric properties
 
Description 544-548
High dielectric constant and low loss nanocrystalline EuTiNbO6 ceramic was synthesized through a combustion
technique. Phase purity, structure and particle size were examined using X-Ray diffraction, Fourier Transform Raman,
Infrared spectroscopy and transmission electron microscopic techniques. The X-Ray diffraction study reveals that the
sample crystallizes in orthorhombic aeschynite structure without any impurity. The non-agglomerated particles with narrow
particle size distribution were observed in the transmission electron micro graph and the average particle size was found to
be 25 nm. The sample attained the 98 % of theoretical density when it was sintered at 1150 ºC. The scanning electron
micrograph of the sample exhibits non uniform distribution of grains nearly in spherical shape throughout the surface.
The Energy dispersive spectrum analysis confirms that the constituent elements are nearly the same atomic percentage as
per the chemical formula of the sample. The dielectric properties of the sintered sample were measured in the radio
frequency and micro frequency region. The dielectric constant and quality factor of the sample at room temperature are
35 and 23370, respectively. The dielectric studies revealed that the nanocrystalline EuTiNbO6 Ceramic is a promising
material for dielectric resonator applications.
 
Date 2021-08-23T11:40:22Z
2021-08-23T11:40:22Z
2021-08
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscair.res.in/handle/123456789/57940
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJPAP Vol.59(08) [August 2021]