Synthesis and Characterization of Single-Crystalline BaTi2O5 Nanowires
Synthesis and Characterization of Single-Crystalline BaTi2O5 Nanowires
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DOI：
10.1021/jp909898z
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发表时间：
2010-01
影响因子：
3.7
通讯作者：
Z. Deng;Ying Dai;Wen Chen;X. Pei
中科院分区：
文献类型：
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作者：
Z. Deng;Ying Dai;Wen Chen;X. Pei
以BaC2O4·H2O和TiO2粉体为前驱体，采用简单的熔盐法合成了大尺寸单晶BaTi2O5纳米线。采用X射线粉末衍射、扫描电子显微镜、透射电子显微镜和拉曼光谱对所制备的BaTi2O5纳米线进行了表征。结果表明，BaTi2O5纳米线为单晶，择优生长方向为[011]。研究了合成过程中的相演变。局部压电响应力的测量表明，BaTi2O5纳米线在室温下具有可切换的极化。
Large-scale single-crystalline BaTi2O5 nanowires were synthesized using BaC2O4·H2O and TiO2 powders as precursors by a simple molten salt method. The as-synthesized BaTi2O5 nanowires were characterized by powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and Raman spectroscopy. The results show that the BaTi2O5 nanowires are single crystalline with the preferred growth direction of [011]. The phase evolution of the synthesis process has been investigated. Local piezoresponse force measurements indicate that the BaTi2O5 nanowires have switchable polarization at room temperature.