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The 1 MHz dielectric properties of Ca 5 Nb 2 TiO 12 and Ca 5 Ta 2 TiO 12 compounds were reported recently. Both compounds have a common characteristic dependence of the temperature coefficient of dielectric constant (TCK) and dielectric constant (ε r ) on sintering temperature. For both compounds a TCK<5 ppm/deg can be achieved by...
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