Enhancement of stability of growth, structural and NLO properties of KDP crystals due to additive along with seed rotation
Enhancement of stability of growth, structural and NLO properties of KDP crystals due to additive along with seed rotation
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DOI：
10.1002/crat.200811184
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发表时间：
2009-01
影响因子：
1.5
通讯作者：
P. Dhanaraj;N. Rajesh;P. Ramasamy;M. Jeyaprakasan;C. Mahadevan;G. Bhagavannarayana
中科院分区：
文献类型：
--
作者：
P. Dhanaraj;N. Rajesh;P. Ramasamy;M. Jeyaprakasan;C. Mahadevan;G. Bhagavannarayana
以乙酸钾（CH3COOK）和柠檬酸钾（K3C6H5O7）为新添加剂，以不同的摩尔比加入到磷酸二氢钾（KDP）溶液中。测定并比较了添加和不添加这些添加剂时的介稳区宽度和诱导期。采用传统的平行板电容器法对纯KDP晶体和掺杂KDP晶体在313 K至423 K范围内的不同温度下进行了介电测量，结果表明掺杂晶体中的介电常数值较低。高分辨XRD研究表明，CH_3COOK掺杂KDP晶体和K_3C_6H_5O_7掺杂KDP晶体不含任何内部结构晶界，结晶完整性很好。此外，这些钾添加剂的加入改善了晶体的质量，并产生具有良好限定特征的高度透明的晶体。研究了添加剂对薄膜生长、成核动力学、结构、非线性光学和光学性能的影响。（© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA，魏因海姆）
Potassium Acetate (CH3COOK) and Potassium Citrate (K3C6H5O7) as new additives were added into the potassium dihydrogen phosphate (KDP) solutions in different molar ratios. The metastable zone width and induction period with and without these additives were determined and compared. Dielectric measurements on pure and doped KDP crystals at various temperatures ranging from 313 to 423 K were carried out by the conventional parallel plate capacitor method which results low dielectric constant value dielectrics in doped crystals. The high resolution XRD studies show that CH3COOK doped KDP crystal and K3C6H5O7 doped KDP crystal do not contain any internal structural grain boundaries and indicates that the crystalline perfection is very good. Moreover, the addition of these potassium additives improves the quality of the crystal and yields highly transparent crystals with well defined features. The effect of additives on the growth, nucleation kinetics, structural, NLO and optical properties has been investigated. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)