Bulletin of Materials Science

, Volume 28, Issue 6, pp 589–592

Optical absorption and electron spin resonance studies of Cu2+ in Li2O-Na2O-B2O3-As2O3 glasses

  • N. Srinivasa Rao
  • Shashidhar Bale
  • M. Purnima
  • K. Siva Kumar
  • Syed Rahman
Article

Abstract

The local structure around Cu2+ ion has been examined by means of electron spin resonance and optical absorption measurements in xLi2O-(40-x)Na2O-50B2O3-10As2O3 glasses. The site symmetry around Cu2+ ions is tetragonally distorted octahedral. The ground state of Cu2+ isdx2y2.The glass exhibited broad absorption band near infrared region and small absorption band around 548 nm, which was assigned to the2B1g2Egtransition.

Keywords

Glass transition temperature ESR optical absorption bonding parameters 

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Copyright information

© Indian Academy of Sciences 2005

Authors and Affiliations

  • N. Srinivasa Rao
    • 1
  • Shashidhar Bale
    • 1
  • M. Purnima
    • 1
  • K. Siva Kumar
    • 1
  • Syed Rahman
    • 1
  1. 1.Department of PhysicsOsmania UniversityHyderabadIndia

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