摘要
用化学共沉淀法制备了ＹＦｅ１－ｙＣｏｙＯ３(０．０≤ｙ≤０．５０)固溶纳米晶微粉,并对其制备条件、物相组成、微结构、电导和气敏效应作了系统研究．结果表明:钴Ｂ位掺杂铁酸钇材料呈典型的Ｐ型半导体导电行为,同温下固溶体电导不仅大于纯相ＹＦｅＯ３的电导而且随湿度增加其电阻迅速下降;２４３℃下ＹＦｅ０．９Ｃｏ０．１Ｏ３传感器元件对乙醇有较高的灵敏度和良好的选择性．有望开发为一类新型Ｃ２Ｈ５ＯＨ信息敏感材料．
The nano-crystal powders of perovskite-type solid solution YFe1-yCoyO3 (0≤y≤0.50) were prepared by chemical coprecipitation. The preparation conditions, phase constituents, conductance and gas-sensing properties were investigated. The results demonstrated that YFe1-yCoyO3 shows p-type semiconducting properties and it has high sensitivity and good selectivity to C2H5OH when y=0.10.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第3期526-530,共5页
Journal of Inorganic Materials
基金
安徽省教育厅自然科学基金(2001kj183)
