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Title: EPR and optical absorption by Cu{sup 2+} ions in ZnO−Li{sub 2}O−Na{sub 2}O−K{sub 2}O−B{sub 2}O{sub 3} glasses

Electron Paramagnetic Resonance (EPR) studies at room temperature in the x-band frequencies on xZnO−10Li{sub 2}O−10Na{sub 2}O−10K{sub 2}O−(69−x)B{sub 2}O{sub 3}−1CuO (x=0,2,4,6 and 8 mole%) glass systems were reported. The non-linear variation of spin-Hamiltonian parameters with ZnO content indicated the change in the ligand field strength around Cu{sup 2+} ions in the host glass. The ground state of Cu{sup 2+} ions in the glass is designated as d{sub x{sup 2}−y{sup 2}} orbital ({sup 2}B{sub 1g}) while the observed symmetry around it is tetragonally distorted octahedral. The molecular orbital coefficients α{sup 2}, β{sup 2} and β{sub 1}{sup 2} are evaluated for Cu{sup 2+} doped samples. The non-linear variation in the values of parameters indicated mixed alkali effect in the glasses.
Authors:
; ;  [1] ;  [2]
  1. Department of Physics, Osmania University, Hyderabad-500007 (India)
  2. Department of Physics, Vasavi college of Engineering, Hyderabad-500031 (India)
Publication Date:
OSTI Identifier:
22271041
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BORON OXIDES; CONCENTRATION RATIO; COPPER IONS; DOPED MATERIALS; ELECTRON SPIN RESONANCE; GLASS; GROUND STATES; HAMILTONIANS; LIGANDS; LITHIUM OXIDES; MOLECULAR ORBITAL METHOD; NONLINEAR PROBLEMS; POTASSIUM OXIDES; SODIUM OXIDES; SPIN; TEMPERATURE RANGE 0273-0400 K; ZINC OXIDES