无机材料学报 ›› 2015, Vol. 30 ›› Issue (2): 135-140.DOI: 10.15541/jim20140278

• • 上一篇    下一篇

Er3+掺杂弛豫铁电材料PMNT的单晶生长与性能表征

向军涛1, 杜 鹏2, 罗来慧2, 方义权1, 赵学洋1, 胡旭波1, 陈红兵1   

  1. (宁波大学1. 宁波市新型功能材料及其制备科学国家重点实验室培育基地, 材料科学与工程研究所;  2. 理学院 物理系, 宁波 315211)
  • 收稿日期:2014-05-28 修回日期:2014-07-17 出版日期:2015-02-20 网络出版日期:2015-01-27
  • 作者简介:向军涛(1989–),男, 硕士研究生. E-mail: junot@sina.com
  • 基金资助:
    浙江省重大科技计划优先主题(2009C11144);国家自然科学基金(61378068);宁波大学王宽城幸福基金;浙江省压电频率电子元器件技术与应用创新团队(2009R50025);宁波市光电功能材料及器件创新团队(2009B21007)

Growth and Characterization of Er3+-doped Relaxor-based Ferroelectric Crystal PMNT

XIANG Jun-Tao1, DU Peng2, LUO Lai-Hui2, FANG Yi-Quan1, ZHAO Xue-Yang1, HU Xu-Bo1, CHEN Hong-Bing1   

  1. (1. State Key Base of Functional Material & Its Preparation Science, Institute of Materials Science & Engineering, Ningbo University, Ningbo 315211,China; 2. Physics Department, Faculty of Science, Ningbo University, Ningbo 315211, China)
  • Received:2014-05-28 Revised:2014-07-17 Published:2015-02-20 Online:2015-01-27
  • About author:XIANG Jun-Tao. E-mail: junot@sina.com
  • Supported by:
    Key Science and Technology Program of Zhejiang Province, China (2009C11144);National Natural Science Foundation of China (61378068);K.C.Wong Magna Fund in Ningbo University;Zhejiang Innovation Team of Technology and Application for Electronic Devices of Piezoelectric Frequency (2009R50025);Ningbo Innovation Team of Opto-electronic Functional Materials and Devices (2009B21007)

摘要:

按照0.71Pb(Mg1/3Nb2/3)O3-0.26PbTiO3-0.03Pb(Er1/2Nb1/2)O3化学式所示组分比例, 采用分步高温固相反应合成出Er3+掺杂PMNT多晶, 通过熔体坩埚下降法生长出尺寸φ25 mm×100 mm的Er3+掺杂PMNT晶体, Er3+离子以三元固溶体组元方式被掺杂进入钙钛矿相铁电体晶格; 测试了Er3+掺杂PMNT晶片的介电、压电与铁电性能以及上转换发光性能。结果表明, Er3+掺杂PMNT晶体呈现跟三方相纯PMNT晶体相近的介电、压电与铁电性能; 在980 nm激发光作用下, 该掺杂晶体呈现出Er3+离子特有的较强上转换荧光发射, 并且极化后掺杂晶体的上转换发光强度得到增强。

关键词: Er3+掺杂PMNT晶体, 单晶生长, 坩埚下降法, 电学性能, 上转换发光

Abstract:

According to the molar ratio of 0.71Pb(Mg1/3Nb2/3)O3-0.26PbTiO3-0.03Pb(Er1/2Nb1/2)O3, Er3+-doped PMNT polycrystalline material was prepared by two-step solid-state synthesis at elevated temperature. Er3+-doped PMNT relaxor-based ferroelectric crystal with size of φ25 mm × 100 mm was grown from the stoichiometric melts by vertical Bridgman method. In the ferroelectric crystal with perovskite structure, Er3+ ions were doped into the crystal lattice via one composition of the ternary solid solution compound. The dielectric, piezoelectric and ferroelectric properties and up-conversion emission performance of Er3+-doped PMNT crystal wafers were investigated systematically. It is verified that Er3+-doped PMNT crystal presents the similar electrical properties to those of undoped PMNT crystal. Under the excitation of 980 nm, the crystal also exhibits a strong up-conversion fluorescence emission characteristic to Er3+ ions doped in the medium, and the emission intensity will be enhanced after being poled.

Key words: Er3+-doped PMNT crystal, crystal growth, vertical Bridgman method, electrical properties, up-conversion emission

中图分类号: