Microhardness studies on 4-Dimethylamino-N-methyl 4-Stilbazolium Tosylate (DAST) |
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| Affiliation: | 1. Department of Physics, Ranippettai Engineering College, Walaja-632 513, India;2. School of Science and Humanities, Vellore Institute of Technology, Vellore-632 014, India;3. Indira Gandhi Centre for Atomic Research, Kalpakkam-603 102, India;1. School of Physics, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India;2. Department of Physics and Nanotechnology, SRM University, Chennai 603203, Tamil Nadu, India;1. Centre for Crystal Growth, VIT University, Vellore, Tamil Nadu, 632014, India;2. Laser Materials Development & Devices Division, Raja Ramanna Centre for Advanced Technology, Indore, 452013, India;1. Centre for Crystal Growth, VIT University, Vellore 632 014, Tamilnadu, India;2. Department of Physics, School of Advanced Sciences, VIT University, Vellore 632 014, Tamilnadu, India;3. School of Mechanical, Aerospace and Automotive Engineering, Coventry University, Priory Street, Coventry CV1 5FB, United Kingdom;4. Department of Mechanical and Materials Engineering, University of Cincinnati, OH 45221-0072, United States;1. School of Physics, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India;2. Aerosol and Air Quality Research Laboratory, Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA;1. School of Physics, Madurai Kamaraj University, Madurai, 625021, Tamil Nadu, India;2. Center for Materials for Information Technology (MINT), The University of Alabama, Box 870336, 250 Hackberry Lane, Tuscaloosa, AL, 35487-0336, USA;3. Electrochemical Materials Science Division, CSIR-Central Electrochemical Research Institute, Karaikudi, 630003, Tamil Nadu, India;4. Centre for Nanoscience and Nanotechnology, School of Physics, Bharathidasan University, Tiruchirappalli, 620024, Tamil Nadu, India;5. Department of Bio-Medical Engineering, Aarupadai Veedu Institute of Technology, Vinayaga Mission’s Research Foundation, Vinayaga Nagar, Paiyanoor, 603 104, Tamil Nadu, India |
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| Abstract: | The Vickers and Knoop microhardness studies were carried out on the (001) face of 4-Dimethylamino-N-methyl 4-Stilbazolium Tosylate (DAST) crystals grown by the slope nucleation technique. The Vickers microhardness number (Hv) and the Knoop microhardness number (Hk) were found to dwindle with increasing load. The Meyer's index number (n) and hardness were calculated from Hv. The fracture toughness, brittle index and yield strength were calculated. The Young's modulus was calculated using the Knoop hardness value. |
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