首页期刊信息编委及顾问期刊发行联系方式使用帮助常见问题ENGLISH
位置:首页 >> 正文
Pr2Ti2O7织构陶瓷的等离子活化烧结
作者:高潇逸1 张联盟1 王传彬1 沈强1 姜敬陆2 
单位:1. 武汉理工大学 材料复合新技术国家重点实验室 武汉 430070 2. 湖北新华光信息材料有限公司 湖北 襄阳 441057 
关键词:钛酸镨陶瓷 织构化 等离子活化烧结 铁电性能 
分类号:TQ174.75
出版年,卷(期):页码:2017,45(2):323-326
DOI:10.14062/j.issn.0454-5648.2017.02.22
摘要:

采用等离子活化烧结技术,制备了具有(100)择优取向的钛酸镨(Pr2Ti2O7)织构陶瓷,研究了烧结工艺对其显微结构、织构化及铁电性能的影响。结果表明:经过两步等离子活化烧结后,Pr2Ti2O7晶粒呈片层状平行于样品表面规则排列,沿(100)晶面取向生长,其织构度因子为0.72且结构致密,外观完整规则。该织构化陶瓷具有较强的铁电各向异性,沿平行于(100)晶面生长方向具有更高的剩余极化强度。

 

 Textured Pr2Ti2O7 ceramics with the (100) preferred orientation were prepared via plasma activated sintering (PAS). The influence of PAS process on the microstructure, texturization and ferroelectric properties of the ceramics was investigated. The results indicate that the Pr2Ti2O7 ceramics prepared by the two-step PAS show a significant (100) preferred orientation with a great Lotgering factor of 0.72. The plate-like grains prefer to grow along the direction parallel to the samples’ surface, and the ceramics are dense and complete. The ferroelectric properties of the Pr2Ti2O7 ceramics are anisotropic due to the textured structure. The remanent polarization parallel to the (100)-plane direction is greater than that along other directions.

 
基金项目:
国家自然科学基金(51272195, 51521001);111 计划(B13035)
作者简介:
高潇逸(1992—),男,硕士研究生。
参考文献:

 [1]JOSEPH L K, DAYAS K R, DAMODAR S, et al. Photoluminescence studies on rare earth titanates prepared by selfpropagating high temperature synthesis method [J]. Spectrochim Acta, Part A, 2008, 74(4): 1281–1285.

[2]LICHTENBERG F, HERRNBERGER A, WIEDENMANN K, et al. Synthesis of perovskite-related layered AnBnO3n+2=ABO X type niobates and titanates and study of their structural, electric and magnetic properties [J]. Prog Solid State Chem, 2001, 29(1): 1–70.
[3]WILLIAMS T, SCHMALLE H, RELLER A, et al. On the crystal structures of La2Ti2O7 and La5Ti5O17: High-resolution electron microscopy [J]. J Solid State Chem, 1991, 93(2): 534–548.
[4]SCHEUNEMANN K, MULLER-BUSCHBAUM H K. Zur kristallstruktur von La2Ti2O7 [J]. J Inorg Nucl Chem, 1975, 37(9): 1879–1881.
[5]ZHANG F X, LIAN J, BECKER U, et al. Structural change of layered perovskite La2Ti2O7 at high pressures [J]. J Solid State Chem, 2007, 180(2): 571–576.
[6]LE Paven C, LU Y, NGUYEN H V, et al. Lanthanum titanium perovskite compound: Thin film deposition and high frequency dielectric characterization [J]. Thin Solid Films, 2014, 553: 76–80.
[7]KIMURA M, NANAMATSU S, KAWAMURA T, et al. Ferroelectric, electrooptic and piezoelectric properties of Nd2Ti2O7 single crystal [J]. Jpn J Appl Phys, 1974, 13(9): 1473–1476.
[8]YAN H, NING H, KAN Y, et al. Piezoelectric Ceramics with Super- High Curie Points [J]. J Am Ceram Soc, 2009, 92(10): 2270–2275.
[9]NANAMATS S, KIMURA M, YAMADA N. Ferroelectric properties of La2Ti2O7 crystal [J]. NEC Res Dev, 1974(34): 39–42.
[10]SUN L, JU L, QIN H, et al. Room-temperature magnetoelectric coupling in nanocrystalline nanocrystalline Pr2Ti2O7 [J]. Phys B, 2013, 431: 49–53. 
[11]ATUCHIN V V, GAVRILOVA T A, GRIVEL J C, et al. Electronic structure of layered ferroelectric high-k titanate Pr2Ti2O7 [J]. J Solid State Chem, 2012, 195: 125–131.
[12]KRISHNANKUTTY K, DAYAS K R. Synthesis and characterization of monoclinic rare earth titanates, RE2Ti2O7 (RE= La, Pr, Nd), by a modified SHS method using inorganic activator [J]. Bull Mater Sci, 2008, 31(6): 907–918.
[13]SHCHERBAKOVA L G, MAMSUROVA L G, SUKHANOVA G E. Lanthanide titanates [J]. Russ Chem Rev, 1979, 48(3): 228–242.  
[14]YU T. Some optical and electrophysical properties of complexly substituted phases based on A2B2O7 perovskite-like ferroelectrics [J]. Inorg Mater, 1985, 21(10): 1515–1519.
[15]YAMAMOTO J K, BHALLA A S. Piezoelectric properties of layered perovskite A2Ti2O7 (A= La and Nd) single-crystal fibers [J]. J Appl Phys, 1991, 70(8): 4469–4471.
[16]BRAHMAROUTU B, MESSING G L, Trolier-McKinstry S, et al. Templated grain growth of textured Sr2Nb2O7 [C]//Applications of Ferroelectrics, 1996 ISAF'96, Proceedings of the Tenth IEEE International Symposium on IEEE, 1996, 2: 883–886.
[17]LI X, ZHU Z, LI F, et al. Facile route to prepare grain-oriented multiferroic Bi7Fe3–x-CoxTi3O21 ceramics [J]. J Eur Ceram Soc, 2015, 35(13): 3437–3443.
[18]YAN H, REECE M J, LIU J, et al. Effect of texture on dielectric properties and thermal depoling of Bi4Ti3O12 ferroelectric ceramics [J]. J Appl Phys, 2006, 100(7): 6103(1-3). 
[19]ZHU M K, TTANG J L, KE N, et al. Annealing effect on relaxor behaviours of spark plasma sintered Pb(Sc1/2Nb1/2)O3 superfine ceramics [J]. Adv Appl Ceram, 2011, 110(2): 74–79.
[20]ANGERER P, NEUBAUER E, YU L G, et al. Texture and structure evolution of tantalum powder samples during spark-plasma-sintering (SPS) and conventional hot-pressing [J]. Int J Refract Met Hard Mater, 2007, 25(4): 280–285.
[21]ZHANG Y, ZHANG J, LU Q. Rapid synthesis of Ca2Co2O5 textured ceramics by coprecipitation method and spark plasma sintering [J]. J Alloy Compd, 2005, 399(1): 64–68.
GAO Z P, YAN H X, NING H P, et al. Piezoelectric and dielectric properties of Ce substituted La2Ti2O7 ceramics [J]. J Eur Ceram Soc, 2013, 33(5): 1001–1008.
服务与反馈:
文章下载】【加入收藏
中国硅酸盐学会《硅酸盐学报》编辑室
京ICP备10016537号-2
京公网安备 11010802024188号
地址:北京市海淀区三里河路11号    邮政编码:100831
电话:010-57811253  57811254    
E-mail:jccs@ceramsoc.com