Electron spin resonance and optical absorption spectra of Cu2+ ions in Na2SO4-ZnSO4 glasses |
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Authors: | G L Narendra B Sreedhar J Lakshmana Rao S V J Lakshman |
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Affiliation: | (1) Department of Physics, Sri Venkateswara University, 517 502 Tirupati, India |
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Abstract: | Electron spin resonance (ESR) and optical absorption spectra of Cu2+ ions in Na2SO4-ZnSO4 glasses have been studied. The ESR spectra of Cu2+ ion-doped glasses exhibited a pronounced peak atg=2.07 and a shallow quadruplet atg=2.35, the latter arising from the hyperfine splitting of g . ESR spectra of Cu2+ ion-doped glasses were also studied by varying the concentration of Cu2+ions, temperature and composition of the glasses. The optical absorption spectra exhibited a broad absorption band in the near infrared region, which is attributed to2B1g 2B2g transition. By correlating the ESR and optical absorption data, the bonding orbital coefficients 2 and
1
2
for Cu2+ ions have been evaluated. |
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