材料科学
退火(玻璃)
纳米复合材料
电介质
多铁性
透射电子显微镜
煅烧
铁氧体(磁铁)
分析化学(期刊)
溶胶凝胶
化学工程
纳米技术
复合材料
铁电性
化学
色谱法
工程类
催化作用
生物化学
光电子学
作者
Poonam Uniyal,K. L. Yadav
标识
DOI:10.1016/j.jallcom.2009.10.275
摘要
Nanocomposites of xZnFe2O4–(1 − x)BiFeO3, x = 0.1, 0.2, 0.3, 0.4 have been prepared by sol–gel technique. The samples have been calcined at various temperatures ranging from 500 to 800 °C and then the effect of annealing temperature on dielectric and magnetic properties is studied. Transmission electron microscopy revealed the formation of powders of nano order size and the crystal size was found to be around 30 nm. The magnetic behavior is found to be strongly dependent upon concentration of Zn ferrite phase and annealing temperature. Enhancement of dielectric constant is observed for the samples with high ferrite concentration and antiferromagnetic Néel temperature is also evident for the samples with maximum ferrite concentration.
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