电子元件与材料2023，Vol.42Issue(11)：1308-1314,1319,8.DOI:10.14106/j.cnki.1001-2028.2023.0175
Gd、Ti共掺杂铁酸铋陶瓷中尺寸效应对电学性能的影响
Size effect on electrical properties of Gd and Ti co-doped bismuth ferrite ceramics
摘要
Abstract
Bi0.8 Gd0.2 Fe0.95 Ti0.05 O3(BGFT)ceramics were prepared by solid-state reaction and spark plasma sintering(SPS)methods.Their structure,micromorphology,dielectric,relaxation,impedance and energy storage properties were characterized.Experimental results show that the BGFT grain sizes of coarse-grained ceramics prepared by solid-state reaction and nanoceramics prepared by SPS are 2 μm and below 100 nm,respectively.Comparing to coarse-grained BGFT ceramics,BGFT nanoceramics exhibit typical relaxor ferroelectric properties with higher dielectric permittivity(～282)and lower dielectric loss(0.018).The fitting results of impedance spectrum show that the dominant defects in the coarse-grained BGFT ceramics and BGFT nanoceramics are oxygen vacancies.BGFT nanoceramics exhibit relaxor ferroelectric phases at grain boundaries due to the decreasing grain size,and their energy storage properties are significantly improved with energy storage density of 105 mJ/cm3,and energy storage efficiency of 80.2%.It also exhibit high temperature stability.关键词
Bi0.8 Gd0.2 Fe0.95 Ti0.05 O3/尺寸效应/正交相/弛豫铁电体/储能Key words
Bi0.8 Gd0.2 Fe0.95 Ti0.05 O3/size effect/orthorhombic phase/relaxor ferroelectrics/energy storage分类
通用工业技术引用本文复制引用
薛飞,田娅晖,郭芳芳,邱岚,汪炜军,刘美莲..Gd、Ti共掺杂铁酸铋陶瓷中尺寸效应对电学性能的影响[J].电子元件与材料,2023,42(11):1308-1314,1319,8.基金项目
国家自然科学基金(52162017) （52162017）
江西省青年科学基金(20202BABL214009) （20202BABL214009）
江西省教育厅科学技术研究项目(GJJ212001,GJJ190989,GJJ190990) （GJJ212001,GJJ190989,GJJ190990）
江西省大学生创新创业训练项目(202210846004) （202210846004）
