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		题名	作者	年代	出处	被引量
	1	Effect of Constituent Core-sizes on Microstructure and Dielectric Properties of BaTiO_3@(0.6BaTiO_3-0.4BiAlO_3) Core-Shell Material显示文摘The fundamental characteristics of varied initial core-sizes of Ba Ti O3(BT) and its influential role on the morphology and dielectric properties of Ba Ti O3@0.6 Ba Ti O3-0.4 Bi Al O3(BT@0.6 BT-0.4 BA) ceramic samples were studied. Alkoxide sol-precipitation method was adopted as revised chemical route to synthesize the constituent 'core' BT powders in a dispersed phase, whereas the distinctive initial nano-sized particles were affected by the pre-calcination temperatures(600-900 ℃).The microstructure of the uncoated BT ceramics revealed an exaggerated grain growth with an optimized dielectric constant(ε_(max) >9 000) whilst the coated ceramics behaved otherwise(grain growth inhibited) when sintered at an elevated temperature. Regardless of the previously studied solubility limit(about 0.1%) of BT-BA samples, BT@0.6 BT-0.4 BA maintained a maximum dielectric constant(ε_(max)) ranging from 1 592 to 1 708 and tan δ less than 2% under a unit mole ratio at room temperature. In view of all these analyses, the initial nanometer sizes of the as-prepared BT-core powders combined with the increase effect of cation substitutions of Bi^(3+) and Al^(3+) in the shell content, induced the diffuse transition phase of BT@0.6 BT-0.4 BA composition.	APPIAH Millicent 郝华 CHEN Wenjin CHEN Cheng YAO Zhonghua CAO Minghe LIU Hanxing	2018	Journal of Wuhan University of Technology(Materials Science)2018，33，3：	1

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