ディップコーティング法によるナフテン酸塩からのMn系酸化物薄膜の調製

概要

論文の詳細を見る
Mn Co Ni O thin films with a metal atomic ratio of 3 : 2 : 1, which is expected to result in a negative tempera ture coefficient of resistance, have been prepared by me ans of dip coating in a toluene solution containing the corresponding metal naphthenates. An as prepared film was heated at temperatures between 500 and 900℃ for lh after calcining at 450℃ for 5 min. A complicated spinel phase was observed in the film heat treated at temperatures above 600℃, which was composed of the MnCO_2O_4 NiMn_2O_4 solid solution. The smooth surface of the dense film counposed of particles with diameter of about 0.1μm was obtained by heat treatment at 700℃ for lh. Furthermore, the electrical resistance of the film heat treated at temperatures above 600℃ was markedly reduced. The thermal characteristics of the resistance show that the film is a promising material for use as a thermistor.
社団法人日本セラミックス協会の論文
1994-07-01