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Preparation, Structure and Properties of MgO-doped Potassium Sodium Niobate Based Single Crystals
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Yaping XU, Minhong JIANG, Lingna LI, Dedong LI, Lin LI, Guanghui RAO
Journal of the Chinese Ceramic Society | 2020, 48(6) : 913 - 918
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Journal of the Chinese Ceramic Society | 2020, 48(6): 913-918
• Research Paper •
Preparation, Structure and Properties of MgO-doped Potassium Sodium Niobate Based Single Crystals
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Yaping XU, Minhong JIANG, Lingna LI, Dedong LI, Lin LI, Guanghui RAO
Affiliations
  • Guangxi Key Laboratory of Information Materials, School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, Guangxi, China

    • XU Yaping (1993-), female, Master candidate. E-mail:

About Author:

XU Yaping (1993-), female, Master candidate. E-mail:

Published: 2020-06-20 doi: 10.14062/j.issn.0454-5648.2020.06.20190630
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MgO-doped K0.5Na0.5NbO3-based lead-free piezoelectric single crystals were prepared by a seed-free solid-state crystal growth method. The effect of MgO doping on the growth, microstructure and piezoelectric ferroelectric properties of K0.5Na0.5NbO3-based crystals was investigated by X-ray diffractometer, scanning electron microscope and piezoelectric ferroelectric tester. The results show that MgO-doped K0.5Na0.5NbO3-based single crystals can be prepared by a seed-free solid-state crystal growth method. The MgO doping does not change the crystal structure of K0.5Na0.5NbO3-based single crystal, and MgO dissolves into the lattice of potassium sodium niobate to form a uniform solid solution. An appropriate MgO doping content is beneficial to improving the piezoelectric and ferroelectric properties of K0.5Na0.5NbO3-based single crystals and decreasing its dielectric loss. When the doping content of MgO is 0.6%, the piezoelectric constant of K0.5Na0.5NbO3-based single crystal (d33) is 203 pC/N, the dielectric loss (tanδ) is 0.028, the dielectric constant (ε) is 221, the coercive electric field (Ec) is 7 kV/cm, and the residual polarization intensity (Pr) is 36.5 μC/cm2.

potassium sodium niobate  /  piezoelectric single crystal  /  magnesium oxide doping  /  ferroelectric properties  /  seed-free solid-state crystal growth method
许亚萍, 江民红, 李玲娜, 李德东, 李林, 饶光辉. MgO掺杂铌酸钾钠基晶体材料的制备、结构及性能. 硅酸盐学报, 2020 , 48 (6) : 913 -918 . DOI: 10.14062/j.issn.0454-5648.2020.06.20190630
Yaping XU, Minhong JIANG, Lingna LI, Dedong LI, Lin LI, Guanghui RAO. Preparation, Structure and Properties of MgO-doped Potassium Sodium Niobate Based Single Crystals[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (6) : 913 -918 . DOI: 10.14062/j.issn.0454-5648.2020.06.20190630
Appendix
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Year 2020 volume 48 Issue 6
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Article Info
doi: 10.14062/j.issn.0454-5648.2020.06.20190630
  • Receive Date：2019-09-12
  • Online Date：2026-10-29
  • Published：2020-06-20
Article Data
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History
  • Received：2019-09-12
  • Revised：2019-09-18
Funding
Affiliations
    Guangxi Key Laboratory of Information Materials, School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, Guangxi, China

Corresponding:

JIANG Minhong (1978-), male, Ph.D., Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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