| PSKNN铁电单晶及其激光法生长 |
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| 引用本文： | 蒋毅坚,R. Guo,A. S. Bhalla.PSKNN铁电单晶及其激光法生长[J].中国激光,2000,27(9):842-846. |
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| 作者姓名： | 蒋毅坚 R. Guo A. S. Bhalla |
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| 作者单位： | 1. 北京工业大学国家产学研激光技术中心,北京,100022
2. 宾夕法尼亚州立大学材料研究实验室,PA,16802,美国 |
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| 摘 要： | 采用改进的激光加热基座法 (LHPG)生长出了位于准同形相界附近的含有 Pb元素的钨青铜结构的铁电晶体 (1- x) Pb2 KNb5O15- x Sr2 Na Nb5O15(PSKNN)。通过调节激光功率和陶瓷源棒中 Pb O的含量 ,有效地控制和补偿了晶体生长过程中 Pb O的挥发。通过选择适当的籽晶 ,可以得到沿 0 0 1],10 0 ]和 110 ]方向生长的 PSKNN晶体。研究了所生长晶体的铁电、介电和压电性质 ,并对其准同形相界进行了初步的讨论。
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| 关 键 词： | PSKNN 铁电单晶 激光加热基座生长 |
| 收稿时间： | 1999/3/23 |
PSKNN Ferroelectric Single Crystals Grown by Laser Heated Pedestal Growth Technique |
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| Jiang Yijian,R. Guo,A. S. Bhalla.PSKNN Ferroelectric Single Crystals Grown by Laser Heated Pedestal Growth Technique[J].Chinese Journal of Lasers,2000,27(9):842-846. |
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| Authors: | Jiang Yijian R Guo A S Bhalla |
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| Abstract: | Single crystals of near morphotropic phase boundary compositions in the family of Pb-containing tungsten bronze ferroelectric oxide (1-x)Pb2KNb5O15-xSr2NaNb5O15 (PSKNN) have been grown, for the first time, using the modified Laser Heated Pedestal Growth technique. The lead volatility has been controlled and compensated through adjusting the laser power and the Pb-enriched target composition. Both ［001］, ［100］ and ［110］ direction oriented single crystals can be grown by using properly chosen seed crystals. The ferroelectric, dielectric and piezoelectric properties of the grown single crystals are studied, and the morphotropic phase boundary composition in this solid solution family is discussed as well. |
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| Keywords: | PSKNN ferroelectric single crystal LHPG |
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