DIELECTRIC AND MECHANICAL PROPERTIES OF A NON LINEAR OPTICAL CRYSTAL: ANTIMONY POTASSIUM TARTRATE
| Author(s) | : | G.K.Priya Merline, M.Chitra, M.Chitra, G.K.Priya Merline |
| Institution | : | Crystal Growth Centre, Anna University, Chennai - 600 025, India. |
| Published In | : | Vol. 4, Issue 17 — January 2017 |
| Page No. | : | - |
| Domain | : | Engineering |
| Type | : | Research Paper |
| ISSN (Online) | : | 2348-4470 |
| ISSN (Print) | : | 2348-6406 |
Semi-Organic Antimony potassium tartrate (APT) single crystals were grown successfully from theaqueous solution by slow evaporation technique at room temperature. The dielectric behaviour of the sample was studiedover the frequency range from 50 Hz to 5 MHz at the temperatures 40°C, 50°C, 60°C, 70°C and 80°C. The values ofdielectric constant and dielectric loss decrease with the increase in frequency. Higher dielectric permittivity at lowfrequency with very low losses makes this crystal more attractive for optoelectronic and NLO applications. Vickersmicrohardness analysis was carried out to identify the mechanical stability of the grown crystal and the reverseindentation size effect was explained satisfactorily. The work hardening coefficient (Meyer’s index), yield strength andthe elastic stiffness constant were also calculated. This study confirms that the APT crystal belongs to soft materialcategory. The non-linear optical (NLO) test confirms the second harmonic signal generation in the grown sample.
G.K.Priya Merline, M.Chitra, M.Chitra, G.K.Priya Merline, “DIELECTRIC AND MECHANICAL PROPERTIES OF A NON LINEAR OPTICAL CRYSTAL: ANTIMONY POTASSIUM TARTRATE”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 4, Issue 17, pp. -, January 2017.
