title: Study on Tb3+ containing high silica and low silica calcium aluminate glasses: Impact of optical basicity.
abstract: Two series of glasses based on high silica (CAS) and low silica calcium aluminates (LSCA) have been investigated for their structural, optical and Tb(3+) luminescence properties. The compositional modification reduces host phonon energy in LSCA glasses. Still, LSCA glasses exhibit Tb(3+) green luminescence quenching, whereas no quenching observed in CAS glasses. Material property influence on this behaviour has been discussed with an insight into the redox state of active ions.
authors.affiliation: Glass Science and Technology Section, CSIR-Central Glass and Ceramic Research Institute, 196 Raja S. C. Mullick Road, Kolkata 700032, India.
authors.forename: Atul D
authors.initials: AD
authors.lastname: Sontakke
authors.forename: K
authors.initials: K
authors.lastname: Annapurna
mesh_terms: D000042:Absorption; D017607:Aluminum Compounds / Q000737:chemistry*; D017610:Calcium Compounds / Q000737:chemistry*; D004583:Electrons; D005898:Glass / Q000737:chemistry*; D007477:Ions; D008970:Molecular Weight; D055620:Optical Phenomena; D012031:Refractometry; D012822:Silicon Dioxide / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D017550:Spectroscopy, Fourier Transform Infrared; D013725:Terbium / Q000737:chemistry*
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D007477:Ions; D013725:Terbium; C035219:calcium aluminate; D012822:Silicon Dioxide