E.p.r. and optical absorption of Mn2+ions in ternary K2SO4−Na2SO4-ZnSO4glasses

✍ Scribed by R. Rama Kumar; A. Srinivasa Rao; B. C. Venkata Reddy

• Publisher: Springer
• Year: 1996
• Tongue: English
• Weight: 303 KB
• Volume: 21
• Category: Article
• ISSN: 0340-4285
• DOI: 10.1007/bf00140776

✦ Synopsis

Electron paramagnetic resonance (e.p.r.) and optical absorption measurements were performed on K2SO 4-NaeSO4-ZnSO4 glasses containing 1-10mol% of MnSO4"H20. The spectra of Mn2+-doped samples exhibit a sextet centred at g = 2.03. The e.p.r, signal clearly shows its dependence on the dopant ion concentration. The optical absorption spectrum at room temperature shows bands characteristic of Mn 2 + ions in octahedral symmetry. The crystal field (Dq) and the Racah interelectronic repulsion (B and C) parameters have been evaluated. E.p.r. and optical absorption studies reveal that the Mn 2+ ions go substitutionally to Zn ion sites and the site symmetry around the transition metal ion is octahedral.