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In present work, undoped and Co2O3-doped Ba4Eu2Fe2Nb8O30 ceramics were fabricated by routine solid state method. Wide temperature range measurement shows two kinds of dielectric peaks. The low-temperature peak attributes to ferroelectric-paraelectric phase transition. The high-temperature peak is affected greatly by Co2O3 additives. With increasing the content of Co2O3 dopant the second peak vanished,...
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