Synthesis, growth, thermal, optical and mechanical properties of new organic NLO crystal: L-alanine DL-malic acid

被引：30

作者：

Jaikumar, D. ^{[2
]}

Kalainathan, S. ^{[1
]}

Bhagavanarayana, G. ^{[3
]}

机构：

[1] VIT Univ, Sch Sci & Humanities, Vellore 632014, Tamil Nadu, India

[2] Voorhees Coll, Dept Phys, Vellore 632001, Tamil Nadu, India

[3] Natl Phys Lab, CGC Sect, New Delhi 110012, India

来源：

JOURNAL OF CRYSTAL GROWTH | 2009年 / 312卷 / 01期

关键词：

Characterization; Solubility; X-ray diffraction; Seed crystals; Nonlinear optic materials; 266; NM; GENERATION; ADP;

D O I：

10.1016/j.jcrysgro.2009.09.056

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

A new organic nonlinear optical crystal, L-alanine DL-malic acid (LADLMA), has been grown from aqueous solution by the slow cooling technique. L-alanine and DL-MaliC acid were used in the ratio 2:1 for synthesis. Crystals of size 24 x 13 x 8 mm(3) have been obtained in 26 days. Characterizations were carried out to study the structural, optical and mechanical properties of the grown crystals. Single crystal X-ray diffraction analysis shows that they belong to the orthorhombic system. To study the crystalline perfection of the grown crystals, high-resolution X-ray diffraction (HR-XRD) study was carried out. The vibrational frequencies of various functional groups have been derived from FTIR spectrum. Thermal behaviour of the crystal was investigated by TG-DTA analyses. Transmission spectrum has been recorded in the solution state and the cut-off frequency has been determined. Nonlinear optical property of the crystal has been confirmed using the Kurtz powder technique and a study of its second harmonic generation efficiency in comparison with KDP has been made. Knoop hardness test was carried out and its Young's modulus was calculated. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：120 / 124

页数：5

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