title: Optical characterization of Sm3+ and Dy3+:ZnO-PbO-B2O3 glasses.
abstract: Here, we present the results of the analysis of Sm(3+) or Dy(3+) (0.5 mol%) ions doped heavy metal oxide (HMO)-based zinc lead borate (ZLB) glasses. Optical measurements such as absorption, emission spectra, lifetimes, XRD, DSC profiles have been carried out. The emission spectrum of Sm(3+):ZLB has shown the emission transitions of (4)G(5/2)-->(6)H(5/2) (563 nm), (4)G(5/2)-->(6)H(7/2) (598 nm), (4)G(5/2)-->(6)H(9/2) (646 nm), (4)G(5/2)-->(6)H(11/2) (708 nm) with lambda(exc): 401 nm ((6)H(5/2)-->(4)F(7/2)). In the case of the Dy(3+):ZLB glass, emission transitions of (4)F(9/2)-->(6)H(15/2) (485 nm), (4)F(9/2)-->(6)H(13/2) (575 nm) and (4)F(9/2)-->(6)H(11/2) (664 nm) with lambda(exi): 447 nm ((6)H(15/2)-->(4)I(15/2)) have been identified. Energy level schemes relating to the emission mechanisms involved in Sm(3+) and Dy(3+) glasses have been given.
authors.affiliation: Department of Physics, Sri Venkateswara University, Tirupati 517 502, India.
authors.forename: A
authors.initials: A
authors.lastname: Thulasiramudu
authors.forename: S
authors.initials: S
authors.lastname: Buddhudu
mesh_terms: D001881:Borates / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning; D004419:Dysprosium / Q000737:chemistry*; D005470:Fluorometry; D005898:Glass / Q000737:chemistry*; D007477:Ions; D007854:Lead / Q000737:chemistry*; D008970:Molecular Weight; D010087:Oxides / Q000737:chemistry*; D012493:Samarium / Q000737:chemistry*; D013053:Spectrophotometry; D013696:Temperature; D013997:Time Factors; D014961:X-Ray Diffraction; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D001881:Borates; D007477:Ions; D010087:Oxides; D004419:Dysprosium; D007854:Lead; D012493:Samarium; D015034:Zinc Oxide