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Effect of Cooling Rate on Structure and Properties of Potassium Sodium Niobate-based Single Crystals Prepared by Seed-free Solid-state Crystal Growth Method
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Dedong LI, Minhong JIANG, Lin LI, Yaping XU, Xiaoyu YAO, Wendi LI, Shuangyang NI, Guanghui RAO
Journal of the Chinese Ceramic Society | 2020, 48(9) : 1446 - 1454
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Journal of the Chinese Ceramic Society | 2020, 48(9): 1446-1454
Effect of Cooling Rate on Structure and Properties of Potassium Sodium Niobate-based Single Crystals Prepared by Seed-free Solid-state Crystal Growth Method
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Dedong LI, Minhong JIANG, Lin LI, Yaping XU, Xiaoyu YAO, Wendi LI, Shuangyang NI, Guanghui RAO
Affiliations
  • Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, Guangxi, China

    • LI Dedong (1994-), male, Master candidate. E-mail:

About Author:

LI Dedong (1994-), male, Master candidate. E-mail:

Published: 2020-09-20 doi: 10.14062/j.issn.0454-5648.20200074
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The potassium sodium niobate (KNN) single crystal was successfully prepared by the seed-free solid-state crystal growth method, and the effect of cooling rate on the structure and electricity properties of KNN single crystal was systematically studied. The results show that optimizing the cooling rate can promote the growth of single crystals, and it is easy to grow single crystals with larger sizes; when the cooling rate is lower, the crystal surface is flatter and the quality of the crystal is higher; The effect of the crystal structure of the single crystal is small; when the temperature reduction rate is 2.0 ℃/min, the prepared potassium-sodium niobate piezoelectric single crystal exhibits excellent piezoelectric properties, and its positive piezoelectric coefficient d33 reaches 510 pC/N, the inverse piezoelectric coefficient d*33 is 1 425 pm/V, and the crystal also has a lower dielectric loss tanδ=0.02, a higher Curie temperature TC=416 ℃, and a larger remanent polarization Pr=20 μC/cm2. This shows that the potassium-sodium niobate-based single crystals grown by seed-free solid-state crystal growth method by optimizing the cooling rate is a promising piezoelectric ferroelectric single crystal material and has great potential application value.

sodium potassium niobate  /  piezoelectric single crystal  /  seed-free solid-state method  /  cooling rate  /  piezoelectric properties
李德东, 江民红, 李林, 许亚萍, 姚小玉, 李文迪, 倪双阳, 饶光辉. 降温速率对无籽固相法生长铌酸钾钠基单晶结构和性能的影响. 硅酸盐学报, 2020 , 48 (9) : 1446 -1454 . DOI: 10.14062/j.issn.0454-5648.20200074
Dedong LI, Minhong JIANG, Lin LI, Yaping XU, Xiaoyu YAO, Wendi LI, Shuangyang NI, Guanghui RAO. Effect of Cooling Rate on Structure and Properties of Potassium Sodium Niobate-based Single Crystals Prepared by Seed-free Solid-state Crystal Growth Method[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (9) : 1446 -1454 . DOI: 10.14062/j.issn.0454-5648.20200074
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Year 2020 volume 48 Issue 9
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Article Info
doi: 10.14062/j.issn.0454-5648.20200074
  • Receive Date：2020-02-15
  • Online Date：2026-10-29
  • Published：2020-09-20
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History
  • Received：2020-02-15
  • Revised：2020-03-15
Funding
Affiliations
    Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, Guangxi, China

Corresponding:

JIANG Minhong (1978-), male, 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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