Laboratory of Functional Materials, College of Physics and Materials Science, Henan Normal University, Xinxiang, 453007, China.
Henan Key Laboratory of Photovoltaic Materials, Xinxiang, 453007, China.
Sci Rep. 2017 Aug 17;7(1):8517. doi: 10.1038/s41598-017-09141-0.
In this work, the (YNb)TiO (x = 0.001, 0.01, 0.02, 0.04, 0.06 and 0.1) ceramics (as called YNTO) were fabricated by synthesized through a standard solid-state reaction. As revealed by the X-ray diffraction (XRD) spectra, the YNTOs exhibit tetragonal rutile structure. Meanwhile, the grain size of YNTO ceramics increased and then decreased with the increase of x value, and the largest value reached when x = 0.02. All the YNTO samples display colossal permittivity (~10-10) over a wide temperature and frequency range. Moreover, the optimal ceramic, (YNb)TiO, exhibits high performance over a broad temperature range from 20 °C to 180 °C; specifically, at 1 kHz, the dielectric constant and dielectric loss are 6.55 × 10 and 0.22 at room temperature, and they are 1.03 × 10 and 0.11 at 180 °C, respectively.
在这项工作中，通过标准的固态反应合成了（YNb）TiO（x=0.001、0.01、0.02、0.04、0.06 和 0.1）陶瓷（称为 YNTO）。X 射线衍射（XRD）谱表明，YNTO 具有四方金红石结构。同时，YNTO 陶瓷的晶粒尺寸随 x 值的增加先增大后减小，当 x=0.02 时达到最大值。所有 YNTO 样品在宽温度和频率范围内均表现出巨大的介电常数（~10-10）。此外，最佳陶瓷（YNb）TiO 在 20°C 至 180°C 的宽温度范围内表现出优异的性能；具体来说，在 1kHz 时，室温下的介电常数和介电损耗分别为 6.55×10 和 0.22，在 180°C 时分别为 1.03×10 和 0.11。
