Er3+掺杂弛豫铁电材料PMNT的单晶生长与性能表征

doi:10.15541/jim20140278

无机材料学报 ›› 2015, Vol. 30 ›› Issue (2): 135-140.DOI: 10.15541/jim20140278 CSTR: 32189.14.10.15541/jim20140278

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

(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. 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/Abstract

摘要：

按照0.71Pb(Mg_1/3Nb_2/3)O₃-0.26PbTiO₃-0.03Pb(Er_1/2Nb_1/2)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(Mg_1/3Nb_2/3)O₃-0.26PbTiO₃-0.03Pb(Er_1/2Nb_1/2)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:

向军涛, 杜鹏, 罗来慧, 方义权, 赵学洋, 胡旭波, 陈红兵. Er³⁺掺杂弛豫铁电材料PMNT的单晶生长与性能表征[J]. 无机材料学报, 2015, 30(2): 135-140.

XIANG Jun-Tao, DU Peng, LUO Lai-Hui, FANG Yi-Quan, ZHAO Xue-Yang, HU Xu-Bo, CHEN Hong-Bing. Growth and Characterization of Er³⁺-doped Relaxor-based Ferroelectric Crystal PMNT[J]. Journal of Inorganic Materials, 2015, 30(2): 135-140.

图/表 9

图1 前驱体MgNb2O6(a)和ErNbO4(b)的XRD图谱

Fig. 1 XRD patterns of the precursors MgNb2O6 (a) and ErNbO4 (b)

图2 Er3+掺杂PMNT多晶的XRD图谱

Fig. 2 XRD pattern of Er3+-doped PMNT poly-crystalline material

图3 Er3+掺杂PMNT的单晶毛坯(a)和晶片(b)

Fig. 3 Single crystal boule (a) and wafers (b) of Er3+-doped PMNT

图4 Er3+掺杂PMNT晶片的介电温谱

Fig. 4 Temperature dependance of dielectric permittivity and dielectric loss of Er3+-doped PMNT crystal wafer

图5 Er3+掺杂PMNT晶片的电滞回线

Fig. 5 Polarization hysteresis loops of Er3+-doped crystal wafer

图6 Er3+掺杂PMNT晶片的室温吸收光谱

Fig. 6 Room temperature absorption spectrum of Er3+-doped crystal wafer

图7 Er3+掺杂PMNT晶片室温下极化前后的透射光谱

Fig. 7 Optical transmission spectra of poled and unpoled Er3+-doped PMNT crystal wafer

图8 Er3+掺杂PMNT晶片极化前后的上转换发射光谱

Fig. 8 Upconversion emission spectra of unpoled and poled Er3+-doped crystal wafer

图9 Er3+离子掺杂介质的上转换发射的能级示意图

Fig. 9 Energy diagrams for up-conversion emission in Er3+ ions doped medium

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Er³⁺掺杂弛豫铁电材料PMNT的单晶生长与性能表征

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

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