Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1651032 | Materials Letters | 2008 | 4 Pages |
Abstract
New complex oxides having powellite (CaMoO4) type structure in the Ca–R–Nb–Mo–O system (R = Y, La, Nd, Sm or Bi) were prepared employing the method of solid state reaction between the component oxides at high temperature (1000–1100 °C). The new compounds, CaRNbMoO8 (R = Y, La, Nd, Sm, Bi) are colorless and electrical insulators. The dielectric constants (K at 1 MHz) of these compounds are in the range 14–33 and K shows very little variation in the temperature range 30–100 °C. Their temperature coefficient of dielectric constant (TCK) is negative, which varies from − 21 to − 220 ppm/°C.
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Authors
K. Ravindran Nair, P. Prabhakar Rao, S. Sameera, Vinitha S. Mohan, M.R. Chandran, Peter Koshy,