부산대학교 도서관

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.jallcom.2008.12.102 Byline: M. Venkata Subba Reddy (a), M. Sudhakara Reddy (b), C. Narayana Reddy (a), R.P.S. Chakradhar (c) Keywords: Amorphous materials; Melt quenching; Ultrosonics; Elastic moduli Abstract: This paper describes the sound velocity and the elastic properties of Na.sub.2O-B.sub.2O.sub.3-V.sub.2O.sub.5 glasses over a wide range of composition. Sound velocities (transverse and longitudinal) have been measured using a pulse echo superposition method at a frequency of 10MHz. The elastic moduli (L, G, K and E), Poisson's ratio (I) and Debye temperature (I[cedilla].sub.D) exhibit composition dependent trends. The variation of these parameters has been explained using a structural motifs present and the dimensionality of the glass network. Author Affiliation: (a) Department of Physics, PES Degree College, Bangalore 560050, India (b) Department of Physics, Sri Bhagavan Mahaveer Jain College, Bangalore 560027, India (c) Glass Technology Laboratory, Central Glass & Ceramic Research Institute, Council of Scientific & Industrial Research (CSIR), 196 Raja SC Mulik Road, Jadavpur, Kolkata 700032, India Article History: Received 19 June 2008; Revised 15 December 2008; Accepted 24 December 2008