Influence of the strain on dielectric and ferroelectric properties of 0.5BaZr0.2Ti0.8O3–0.5Ba0.7Ca0.3TiO3
Influence of the strain on dielectric and ferroelectric properties of 0.5BaZr0.2Ti0.8O3–0.5Ba0.7Ca0.3TiO3
复制标题
应变对0.5BaZr0.2Ti0.8O3～0.5Ba0.7Ca0.3TiO3介电和铁电性能的影响
DOI：
10.1111/jace.13677
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发表时间：
2015
影响因子：
3.9
通讯作者：
Zhiguo Liu
中科院分区：
文献类型：
--
作者：
Xijun Xu;Guoliang Yuan;Bo Xu;Jiang Yin;Junming Liu;Zhiguo Liu
在（0 0 1）srtio3衬底上制备了0.5BaZr0.2Ti0.8O3‐0.5 ba0.7 ca0.3 tio3陶瓷及其外延薄膜，比较了其介电性能和铁电性能。该陶瓷具有高介电常数、弱介电弛豫、低铁电居里温度（TC）（60℃）和快速极化弛豫。薄膜表现出较低的介电常数和轻微的介电弛豫。此外，40nm、100nm和200nm厚度的tof薄膜温度分别为155℃、110℃和60℃，因为外延应变随薄膜厚度的增加而减小。tcis越高，室温极化越稳定。
0.5BaZr0.2Ti0.8O3‐0.5Ba0.7Ca0.3TiO3ceramic and its epitaxial films on (0 0 1) SrTiO3substrate were prepared to compare their dielectric and ferroelectric properties. The ceramic has a high dielectric permittivity, a weak dielectric relaxation, a low ferroelectric Curie temperature (TC) of 60°C and a fast polarization relaxation. The films show much lower dielectric permittivities and mild dielectric relaxations. Furthermore, theTCof film with 40, 100, and 200 nm thickness is 155°C, 110°C, and 60°C, respectively, because the epitaxial strain decreases with the film thickness increasing. The higher theTCis, the more stable the room‐temperature polarization is.