Bulk growth, crystalline perfection and optical characteristics of inversely soluble lithium sulfate monohydrate single crystals grown by the conventional solvent evaporation and modified Sankaranarayanan–Ramasamy method. Issue 12 (24th February 2016)

• Record Type: Journal Article
• Authors: Silambarasan, A.; Rao, E. Nageswara; Rao, S. Venugopal; Rajesh, P.; Ramasamy, P.
• Is Part Of: CrystEngComm. Volume 18:Issue 12(2016)
• Page Start: 2072
• Page End: 2080
• Publication Date: 2016-02-24
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c6ce00012f
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : Lithium sulphate monohydrate crystals have been grown by the modified Sankaranarayanan–Ramasamy method. Abstract : Good quality bulk size single crystals of inverse soluble lithium sulphate monohydrate (LSMH) have been grown by the modified Sankaranarayanan–Ramasamy (SR) method. A growth rate as high as 3 mm per day has been obtained for LSMH growth without substantially degrading the optical quality. The rocking curve recorded using the high resolution X-ray diffraction (HRXRD) technique reveals that the crystals grown by this method have a high degree of crystalline perfection. The optical quality of the crystals was studied using an UV-vis-NIR spectrum and the optical constants of the LSMH crystals were calculated. The laser damage threshold value of the grown crystals has been determined using a nanosecond Nd:YAG laser operating at 532 nm. Photoconductivity studies of the grown LSMH crystals reveal a positive photoconductivity behaviour of the grown crystals. The photoluminescence spectrum of the LSMH crystals shows a prominent emission peak at 373 nm. The third order non-linear optical properties of the LSMH crystals were investigated in detail by the Z-scan technique using a He–Ne laser operating at 632.8 nm. The non-linear refractive index ( n 2 ), non-linear absorption coefficient ( β ) and third order non-linear susceptibility ( χ (3) ) of the LSMH crystals were calculated.