The geological glass, obsidian was first used by men thousands of years ago to form knives, arrow tips, jewelers etc. Man made glass objects appeared to be first reported in the Mesopotamian region as early as 4500 BC. Surprisingly, these glasses have compositions very similar to those of modern soda lime silicate glasses. No doubt, the readily available soda ash from fires, limestone from seashells and silica sand from the beaches are the cause of this agreement. Earlier glass coated objects have been dated to as early as 12000 B.C. and are in the form of glazes and enamels on ceramic pottery, used presumably to improve the water tightness of various jugs, bottles and vases. The earliest written record of use and production of glass are some famous clay tablets, dating from around 650B.C. [1], but these are incompletely understood because we have no dictionary to explain the technical terms. Many centuries passed before written account of glass making contain any insight.
INTRODUCTION
• Introduction to Glasses
• History of Glasses
• Different Glasses
• Definition of Glass
• Chalcogenide Glass
• Chalcogenide Sub-Families
• Why Chalcogenide Glasses?
• Applications of Chalcogenide Glasses
• Literature Survey
• Proposed Aim of Work
• Chapter wise Work Distribution
• References
EXPERIMENTAL TECHNIQUES AND METHODS USED
• Introduction
• Material Preparation
• Rapid Cooling of Melt
• Sample Preparation
• Thin Film Preparation
• Palletpreparation
• X-ray diffraction characterization
• Diffraction Principle
• Experimental Setup
• Powder X-Ray Diffractometer
• Electrometer/High Resistance Meter (Keithley 6517A)
• UV-Vis Spectrophotometer (Ocean Optics USB 2000)
• References
ELECTRICAL MEASUREMENT OF GLASSES
• Introduction
• Electrical Measurement of Se-In-Sb Pallets
• Struvtural Characterization
• Palletpreparation (Bulk Sample)
• I-V Measurements
• Poole-Frenkel Conduction
• Electrical Measurement of Se-Te-Ag Pallets
• Structural Charactrization
• Pallet Preparation
• I-V Measurements
• Conclusion
• References
OPTICAL PROPERTIES OF GLASSES
• Introduction
• Direct and Indirect Band Gap
• Determination of Energy Band Gap (Eg)
• Band Gap Determination of Se-In-Sb System
• Se-In-Sb Thin Films
• XRD of Thin Films
• Absorptiion Spectra And Band GapDetermination
• Band Gap Determination of Se-Te-Ag System
• Se-Te-Ag Thin Films
• XRD of Thin Films
• Absorption Spectra and Band Gap Determination
• Approach of Density of State Model
• Conclusion
• References
CHALLENGES TO CHALCOGENIDE GLASSES AND SCOPE FOR FUTURE WORK
REFERENCES
Dr. Praveen Kumar (Dr. Praveen Kumar Saraswat)working as Associate professor & Head in post graduate department of physics, Narain College, Shikohabad affiliated to DR BHIM RAO AMBEDKAR UNIVERSITY, AGRA (Formerly known as AGRA UNIVERSITY, AGRA. He obtained his B.Sc. , M.Sc. & Ph.D. degree from DBRAU, AGRA in 1986,1988 & 1998 respectively. The specialization of his Ph.D. is condensed matter physics. He has teaching experience of more than 26 years of UG & PG classes, research experience of more than 18 years during which five (05) students were awarded & one (01) submitted thesis for award of Ph.D. from DBRAU, AGRA and two (02) students awarded with M.Phil. from PERIYAR UNIVERSITY, SALEM ( TAMILNADU). Also, he has published 15 papers in refereed journals and 11 papers has been presented in NATIONAL/ INTERNATIONAL seminar / conferences etc.. Besides all
Subject Covers:-
• Introduction
• Experimental Techniques and Methods used
• Electrical Measurement of Glasses
• Optical Properties of Glasses
• Challenges to Chalcogenide Glasses and Scope for Future work
• References
This Book Useful for the students of :-
• Bio
• Chemistry
