機能性セラミックスナノ結晶の創製と微構造制御

抄録

Nano-sized crystals were obtained for both (Y_0.95Eu_0.05)₂O₃ phosphor and Co₂Z ferrite (Ba₃Co₂Fe₂₄O₄₁) GHz noise absorber by the respective gel-combustion reactions, Nitrate aqueous mixtures were gelated by heating in a presence of glycine. (Y_0.95Eu_0.05)₂O₃ phosphor with crystallite size of 43nm was prepared from the glycine gel ignited at 300℃. For Co₂Z ferrite preparation, use of Fe(acac)₃ as an iron source was effective to obtain its nanocrystals in lower firing temperature of 1000℃ than that in solid state reaction.