DC-bias and visible light effect on dielectric characteristics of La0.5Cr0.5TiO3+δ

DC-bias and visible light effect on dielectric

characteristics of La0.5Cr0.5TiO3+δ

Yan Chen;Yimin Cui;Jun-en Yao

【期刊名称】《自然科学进展（英文版）》 【年(卷),期】2017(027)005

【摘要】La0.5Cr0.5TiO3+δ ceramic sample was prepared via traditional solid-state reaction route. Frequency and temperature dependence of dielectric permittivity were studied in the range of 102 ~ 106 Hz and of 77 ~360 K, respectively. It was observed that extraordinarily high low-frequency dielectric constants appeared at room temperature, and dielectric relaxation peaks shifted to higher temperature with increasing frequency. In the dc-bias studies, it was also found that the dielectric permittivity had obviously dc-bias dependence in low frequency, but independence as the frequency above 14 kHz. Interestingly, the dielectric characteristics of the sample had obvious light dependence at room temperature within the measured frequency range. The results demonstrate that visible light improves the dielectric properties of the ceramic by means of I-V and complex impedance analysis. 【总页数】5页(593-597) 【关键词】

【作者】Yan Chen;Yimin Cui;Jun-en Yao

【作者单位】Key Laboratory of Micro-nano Measurement-Manipulation

and Physics (Ministry of Education), School of Physics, Beihang University, Beijing 100191, China;Key Laboratory of Micro-nano Measurement-Manipulation and Physics (Ministry of Education), School of Physics, Beihang University, Beijing 100191, China;Key Laboratory of Micro-nano Measurement-Manipulation and Physics (Ministry of Education), School of Physics, Beihang University, Beijing 100191, China 【正文语种】英文 【中图分类】 【文献来源】

https://www.zhangqiaokeyan.com/academic-journal-cn_progress-natural-sciencematerials-international_thesis/020121166520.html 【相关文献】

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