Growth, Optical, Mechanical, Dielectric and Theoretical Studies
on Potassium Pentaborate Tetrahydrate (KB5O8?4H2O) Single
Crystal by Modified Sankaranarayanan-Ramasamy Method

J. Mater. Sci. Technol. ›› 2009, Vol. 25 ›› Issue (06): 745-748.

所属专题：光电材料专辑

Growth, Optical, Mechanical, Dielectric and Theoretical Studies
on Potassium Pentaborate Tetrahydrate (KB₅O₈?4H₂O) Single
Crystal by Modified Sankaranarayanan-Ramasamy Method

S. JEROME DAS

收稿日期:2008-03-28 修回日期:2008-12-06 出版日期:2009-11-28 发布日期:2009-11-24
通讯作者: S. JEROME DAS

Growth, Optical, Mechanical, Dielectric and Theoretical Studies on Potassium Pentaborate Tetrahydrate (KB₅O₈?4H₂O) Single Crystal by Modified Sankaranarayanan-Ramasamy Method

C. Justin Raj¹⁾, S. Krishnan²⁾, S. Dinakaran³⁾, J. Mary Linet³⁾, R. Uthrakumar³⁾, R. Robert³⁾, S. Jerome Das³⁾

1) Department of Physics, FET, Saveetha University, Chennai-601206, India
2) Department of Physics, RMK Engineering College, Kavaraipettai-602105, India
3) Department of Physics, Loyola College, Chennai-600034, India

Received:2008-03-28 Revised:2008-12-06 Online:2009-11-28 Published:2009-11-24
Contact: S. Jerome Das

摘要/Abstract

Abstract:

A nonlinear optical single crystal of potassium pentaborate tetrahydrate (KB₅O₈?4H₂O) has been grown from aqueous solution by using unidirectional crystal growth method of Sankaranarayanan-Ramasamy (SR) with a due modification in the growth assembly. Potassium pentaborate crystal of 60 mm length and 10 mm diameter has been grown along (100) plane with a growth rate of 3 mm per day within a period of 20 days. The grown crystal was subjected to single crystal X-ray diffraction analysis to confirm that the crystal belongs to the orthorhombic system. Some fundamental data such as valance electron plasma energy, Penn gap, Fermi energy and electronic polarizability of the grown crystal were calculated. The presence of borate in the grown crystal was confirmed by Fourier transform infrared (FTIR) spectroscopy. The optical transmission property of the grown crystal was analyzed using ultra violet (UV) visible spectral analysis. Surface morphology of the growth plane was observed using scanning electron microscopy (SEM). The mechanical strength of the crystals was found out using Vickers microhardness test along the growth axis. Frequency dependent dielectric constant of the grown crystal was studied for various temperatures along (100) plane.

Key words: Crystal growth, Characterization, Nonlinear optic materials

S. JEROME DAS. Growth, Optical, Mechanical, Dielectric and Theoretical Studies
on Potassium Pentaborate Tetrahydrate (KB₅O₈?4H₂O) Single
Crystal by Modified Sankaranarayanan-Ramasamy Method[J]. J. Mater. Sci. Technol., 2009, 25(06): 745-748.

C. Justin Raj,S. Krishnan,S. Dinakaran,J. Mary Linet,R. Uthrakumar,R. Robert,S. Jerome Das. Growth, Optical, Mechanical, Dielectric and Theoretical Studies on Potassium Pentaborate Tetrahydrate (KB₅O₈?4H₂O) Single Crystal by Modified Sankaranarayanan-Ramasamy Method[J]. J Mater Sci Technol, 2009, 25(06): 745-748.

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Growth, Optical, Mechanical, Dielectric and Theoretical Studies
on Potassium Pentaborate Tetrahydrate (KB₅O₈?4H₂O) Single
Crystal by Modified Sankaranarayanan-Ramasamy Method

Growth, Optical, Mechanical, Dielectric and Theoretical Studies on Potassium Pentaborate Tetrahydrate (KB₅O₈?4H₂O) Single Crystal by Modified Sankaranarayanan-Ramasamy Method

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