Na-Ni掺杂对Bi 2 (Zn 1/3 Nb 2/3 ) 2 O 7 陶瓷性能的影响
Source abstract
Abstract
采用传统固相反应法制备Bi 2 (Zn 1/3 Nb 2/3 ) 2 O 7 基陶瓷. 研究Na + 、Ni 2+ 分别替代Bi 3+ 、Nb 5+ 对Bi 2 (Zn 1/3 Nb 2/3 ) 2 O 7 陶瓷烧结特性和介电性能的影响. 替代后样品的烧结温度从960℃降低到870℃左右. 在-30℃~+130℃, 陶瓷样品的温谱中出现明显的介电弛豫现象, 弛豫峰所在温区较宽; 当Ni 2+ 替代量增加到0.2时出现双弛豫峰. 随着Ni 2+ 替代量增加, 弛豫峰值温度向高温移动, 弛豫激活能增加, 两弛豫峰之间距增加. 用缺陷偶极子和晶格畸变解释了Na-Ni掺杂Bi 2 (Zn 1/3 Nb 2/3 ) 2 O 7 的介电弛豫现象.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Microwave Dielectric Ceramics Synthesis · Ferroelectric and Piezoelectric Materials · Nuclear materials and radiation effects
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