The structure evolution, dielectric properties, and tunable mechanism of (Ba0.91Ca0.09)(ZryTi1-y)O3 ceramics

被引：0
|
作者：
Yang, Pan [1 ]
Zhao, Le [2 ]
Shi, Shuai [1 ]
Zheng, Haoran [3 ,4 ]
Yu, Shihui [1 ]
机构：
[1] Luoyang Inst Sci & Technol, Dept Elect Engn & Automat, Luoyang 471023, Henan, Peoples R China
[2] Tianjin Univ, Sch Microelect, Tianjin 300072, Peoples R China
[3] Guangdong Commun Polytech, Sch Automot & Engn Machinery, Guangzhou 510000, Peoples R China
[4] Dongguan Univ Technol, Int Sch Microelect, Dongguan 523808, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2024年 / 35卷 / 19期
基金：
中国国家自然科学基金;
关键词：
RELAXOR BEHAVIOR; TUNABILITY; TEMPERATURE;
D O I：
10.1007/s10854-024-13051-z
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
(Ba0.91Ca0.09)(ZryTi1-y)O-3 (0.10 <= y <= 0.25) ceramics were prepared to study the influence of Zr4+ content on the structure evolution, dielectric properties, and tunable mechanism. XRD results and temperature-permittivity curves show that rhombohedral phase and tetragonal phase exist at room temperature for y = 0.10. While only cubic phase can be found at (Ba0.91Ca0.09)(ZryTi1-y)O-3 ceramics as y increases from 0.15 to 0.25. Moreover, Curie temperature T-m gradually shifts to low temperature with increasing Zr4+ content. The Curie temperature of (Ba0.91Ca0.09)(Zr0.2Ti0.8)O-3 ceramic is closed to room temperature, which makes it have a high tunability (66.9%) and low dielectric loss (0.00251) at similar to 6.70 kV/cm due to the influence of polar nano-regions. The excellent tunable performance achieved at low electric field makes (Ba0.91Ca0.09)(Zr0.20Ti0.80)O-3 ceramics have a great application in dielectric varactors.
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页数：10
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