ABSTRACT
Abstract ................................................................................................... 81 4.1 Introduction .................................................................................... 81 4.2 Theoretical Background ................................................................. 83 4.3 Experimental Techniques ............................................................... 92
2 Se
3 -(CuI)
RASHMI M. JOGAD1, P. S. R. KRISHNA2, G. P. KOTHIYAL3, and MAHANTAPPA S. JOGAD4,1*
1Department of Physics, Karnataka State Women’s University, Vijayapura, India
2Solid State Physics Division, Bhabha Atomic Research Center, Mumbai 400085, India
3Glass and Advanced Ceramics Division, Bhabha Atomic Research Center, Mumbai 400085 (Superannuated), India
4Department of Physics, School of Physical Sciences, Central University, Karnataka, Kadaganchi, Aland Road, Kalaburagi 585367, India
*Corresponding author. E-mail: jogad1952@rediffmail.com
4.4 Experimental Results ..................................................................... 97 4.5 Discussion .................................................................................... 104 4.6 Conclusions .................................................................................. 108 Acknowledgments ................................................................................. 108 Keywords .............................................................................................. 109 References ............................................................................................. 109
ABSTRACT
Halide and chalcogenide glasses have received a great deal of interest as potential candidates for infrared transmitting materials. Chalcohalide glasses such as Sb2Se3-(CuI) are good candidates for application in CO2 laser fibers and infrared windows. We report here the preparation of chalcohalide xSb2Se3-(1 – x)CuI glass (where x is varied from 0.7 to 0.3) in vacuum by melt quench technique. These glasses have been characterized using X-ray diffraction (XRD), neutron diffraction (ND), Fouriertransform infrared spectroscopy (FTIR), Field emission scanning electron microscope (FESEM), etc. Glassy nature was confirmed by XRD while the presence of nanoparticles/nano-strips in the glassy matrix was identified by FESEM. FTIR measurement on these glasses exhibited a high transmission of about 75% in the range 10-30 µm. Neutron diffraction was studied on the sample 0.4Sb2Se3-0.6CuI glass to understand the short-range order (SRO) and the bonding nature. Magnetically controlled growing rod (MCGR) technique was employed for analysis of neutron diffraction patterns. We concluded the presence of intermediate range order (IRO) in 0.4Sb2Se3-0.6CuI glass by the use of neutron diffraction in combination with X-ray measurements. In addition, glasses were found to be consisting of mainly Sb─Se as well as Cu─Se bonds. Some investigations on the electrical switching memory for chalcohalide glasses of 0.4Sb2Se3-0.6CuI and 0.6Sb2Se3-0.4CuI composition were also carried out and the results are discussed.
