溶胶-凝胶法制备CaCu3Ti4O12陶瓷及其介电性能研究

人工晶体学报, 2016, 45(3): 725-729.

溶胶-凝胶法制备CaCu3Ti4O12陶瓷及其介电性能研究

贾鹏博 ^1, , 王显威 ^2, , 王小二 ^3, , 王丽芳 ^4, , 刘清波 ^5,

1.河南师范大学物理与电子工程学院功能材料实验室,新乡453007;河南省光伏材料重点实验室,新乡453007

2.河南师范大学物理与电子工程学院功能材料实验室,新乡453007;河南省光伏材料重点实验室,新乡453007

3.河南师范大学物理与电子工程学院功能材料实验室,新乡453007;河南省光伏材料重点实验室,新乡453007

4.河南师范大学物理与电子工程学院功能材料实验室,新乡453007;河南省光伏材料重点实验室,新乡453007

5.河南师范大学物理与电子工程学院功能材料实验室,新乡453007;河南省光伏材料重点实验室,新乡453007

基金项目: 国家自然科学基金(5140209201,11304082,11404102) 国家级大学生创新训练计划项目(201410476037) 河南省前沿物理与清洁能源材料特色学科项目

关键词： CaCu3Ti4O12 , 烧结温度 , 保温时间 , 显微结构 , 介电性能

Preparation and Dielectric Properties of CaCu3Ti4O12 Ceramics by Sol-gel Method

Keywords： CaCu3Ti4O12 , sintering temperature , holding time , microstructure , dielectric property

通过溶胶-凝胶法制备CaCu3Ti4O12 (CCTO)粉体,经成型、烧结制成陶瓷,研究了烧结温度和保温时间对陶瓷显微结构和介电性能的影响.结果表明,在1050～1120℃下,随着烧结温度升高,陶瓷晶粒长大,致密度先增大后减小,经1100℃烧结所得陶瓷晶界清晰,晶粒较大且生长均匀;在1100℃下,随着保温时间的延长,陶瓷晶粒尺寸和致密度先增大后减小,经保温15 h烧结所得陶瓷具有最大的晶粒和致密度,其在1 kHz下的相对介电常数为1.77×104.

参考文献

[1]	Yanyan Li;Pengfei Liang;Xiaolian Chao.Preparation of CaCu_3Ti_4O_(12) ceramics with low dielectric loss and giant dielectric constant by the sol-gel technique[J].CERAMICS INTERNATIONAL,20137(7):7879-7889.
[2]	Veith, M;Ren, SH;Wittmar, M;Bolz, H.Giant dielectric constant response of the composites in ternary system CuO-TiO2-CaO[J].Journal of Solid State Chemistry,200910(10):2930-2936.
[3]	Cui, Shu-Zhen;Lu, Da-Yong;Sun, Xiu-Yun.Study of the solubility of La3+-Dy3+ defect complexes and dielectric properties of (Ba1-xLax)(Ti1-xDyx)O-3 ceramics[J].CERAMICS INTERNATIONAL,20152 Pt.A(2 Pt.A):2301-2308.
[4]	Xingxing Li;Xiaojun Wu;Jinlong Yang.Room-Temperature Half-Metallicity in La(Mn,Zn)AsO Alloy via Element Substitutions[J].Journal of the American Chemical Society,201415(15):5664-5669.
[5]	Sindam, Bashaiah;Raju, K. C. James.Influence of sintering temperature on microwave dielectric properties, structure and lattice modes of Ba(Zn1/3Ta2/3)O-3 resonators[J].Journal of Materials Science. Materials in Electronics,20156(6):3997-4004.
[6]	Adams TB;Sinclair DC;West AR.Characterization of grain boundary impedances in fine- and coarse-grained CaCu3Ti4O12 ceramics[J].Physical review, B. Condensed matter and materials physics,20069(9):4124-1-4124-9-0.
[7]	B.A. Bender;M.-J. Pan.The effect of processing on the giant dielectric properties of CaCu_3Ti_4O_(12)[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,20053(3):339-347.
[8]	Ran Jia;Xuetong Zhao;Jianying Li.Colossal breakdown electric field and dielectric response of Al-doped CaCu_3Ti_4O_(12) ceramics[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2014:79-85.
[9]	杨昌辉 .溶胶—凝胶法制备巨介电常数材料CaCu<,3>Ti<,4>O<,12>及其性能研究[D].浙江大学,2006.
[10]	Qiaoli Zhang;Tao Li;Zhenping Chen.The non-ohmic and dielectric behavior evolution of CaCu_3Ti_4O_(12) after heat treatments in oxygen-rich atmosphere[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,20122(2):168-172.

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