Effect of niobium substitution in stoichiometric lithium tantalate (SLT) single crystals

G. Ravi; R. Jayavel; S. Takekawa; M. Nakamura; K. Kitamura

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Effect of niobium substitution in stoichiometric lithium tantalate (SLT) single crystals

机译：铌取代对化学计量钽酸锂（SLT）单晶的影响

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Optical-quality near-stoichiometric lithium tantalate (SLT) crystals doped with Nb were grown by top seeded solution growth technique using induction-heating system. The crystalline wafers were subjected to optical transmittance studies and coercive field measurements. The optical transmittance spectra of doped crystals show a shift in the absorption edge towards longer wavelength side. A change in Curie temperatures with respect to doping concentrations of Nb has been observed. Hysteresis measurements reveal that the coercive field value increases for increasing niobium concentration. It has also been observed that there is a significant increase in the internal field value for Nb-doped SLT crystals.

机译：使用感应加热系统，通过顶部种子溶液生长技术，生长了掺有Nb的光学质量接近化学计量的钽酸锂（SLT）晶体。对晶体晶片进行光透射率研究和矫顽场测量。掺杂晶体的光学透射光谱显示出吸收边缘向较长波长侧的偏移。已经观察到居里温度相对于Nb的掺杂浓度的变化。磁滞测量结果表明，随着铌浓度的增加，矫顽场值会增加。还已经观察到，掺Nb的SLT晶体的内部场值显着增加。

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来源
《Journal of Crystal Growth》 |2003年第2期|p.146-151|共6页
作者
G. Ravi; R. Jayavel; S. Takekawa; M. Nakamura; K. Kitamura;
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作者单位

Advanced Materials Laboratory, National Institute for Materials Science (AML/NIMS) 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类晶体学;
关键词
A2. top seeded solution growth; B1. stoichiometric LiTaO_3; B2. ferroelectric material;

机译：A2。最高种子溶液生长;B1。化学计量的LiTaO_3;B2。铁电材料;

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Effect of niobium substitution in stoichiometric lithium tantalate (SLT) single crystals

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