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
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- EP ID EP102515
- DOI 10.5185/amlett.2010.3102
- Views 161
- Downloads 0
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