Structural and dielectric properties of Dy2(Ba0.5R0.5)2O7 (R = W, Mo) ceramics
Journal Title: Advanced Materials Letters - Year 2010, Vol 1, Issue 1
Abstract
The polycrystalline samples of the pyrochlore-type Dy[sub]2[/sub](Ba[sub]0.5[/sub]R[sub]0.5[/sub])[sub]2[/sub]O[sub]7[/sub] (R = W, Mo) compounds have been prepared by a hightemperature solid-state reaction technique. Preliminary X-ray diffraction (XRD) studies and scanning electron micrographs (SEM) of the compounds at room temperature suggested that compounds have single phase orthorhombic crystal structures and grain distribution throughout the surface of the samples was uniform. Dielectric studies (dielectric constant (e´) and tangent loss (tan δ) obtained both as a function of frequency (4 kHz-1 MHz) at room temperature (RT) and temperature (RT 320 [sup]0[/sup]C) at 20 kHz and 100 kHz suggest that compounds do not have dielectric anomaly in the said frequency and temperature range.
Authors and Affiliations
N. Singh, Pritam Kumar, Hemchand Kumar, Radheshyam Rai
Keywords
Related Articles
- EP ID EP102515
- DOI 10.5185/amlett.2010.3102
- Views 208
- Downloads 0
Bio- nanomaterials for versatile bio- molecules detection technology
Over the past few years, bionanomaterial research has emerged as a new exciting field and the importance of DNA, RNA and peptides in designing bionanomaterials for the fundamental development in biotechnology and nanomat...
Synthesis of highly soluble phthalocyanine from a new phthalonitrile under mild conditions
Novel syntheses of zinc phthalocyanine (ZnPc) are achieved by exploring our hexamethyldisilazane (HMDS) method. Reactions are clean and efficient by replacing harmful and strongly smelling triethylamine with HMDS. The co...
Deoxyribonucleic acid imprinted biosensor technology
In recent years, molecularly imprinted polymers (MIPs) have attracted much attention due to many of its potential applications including sensors, separation, catalysis, drug delivery and waste management. To prepare MIPs...
SHG relaxation behaviour in m-nitroaniline doped PMMA guest-host system
In present work, we have reported the second harmonic generation (SHG) property on the Guest-Host system based on optical grade poly(methyl methacrylate) (PMMA) and m-Nitroaniline (m-NA) for their use in optoelectr...
Biogenic synthesis of silver nanocubes and nanorods using sundried Stevia rebaudiana leaves
This work reports a novel biological method for the synthesis of rod shaped silver nanoparticles by exploiting sundried Stevia rebaudiana leaves at ambient conditions. On treatment of aqueous solutions of silver wi...