Judd-Ofelt analysis and multiphonon relaxations of rare earth ions in fluorohafnate glasses

Journal Article · Fri Feb 01 04:00:00 EST 1991 · Journal of Solid State Chemistry; (USA)

DOI:https://doi.org/10.1016/0022-4596(91)90148-B· OSTI ID:5562661

Cases, R; Chamarro, M A ^[1]

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1. Universidad de Zaragoza (Spain)

The optical properties of fluorohafnate glasses doped with Pr{sup 3+}, Nd{sup 3+}, Sm{sup 3+}, Dy{sup 3+}, Ho{sup 3+}, Er{sup 3+}, and Tm{sup 3+} have been studied. From optical absorption measurements and using Judd-Ofelt theory, JO parameters {Omega}{sub 2}, {Omega}{sub 4}, and {Omega}{sub 6} have been obtained. The {Omega}{sub 2} values indicate that fluorohafnate glasses present a less ionic character than fluorozirconates. Multiphonon emission probabilities for several levels of Er{sup 3+} and Ho{sup 3+} ions were determined by the difference between the measured rates and the calculated radiative transition probabilities. The results are almost the same as those found in fluorozirconates. Multiphonon emission probabilities are in agreement with the energy-gap law followed by rare-earth ions in crystals and glasses.

• OSTI ID: 5562661
• Journal Information: Journal of Solid State Chemistry; (USA), Journal Name: Journal of Solid State Chemistry; (USA) Vol. 90:2; ISSN JSSCB; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ABSORPTION SPECTROSCOPY
CRYSTALS
DATA
DOPED MATERIALS
DYSPROSIUM
ELEMENTS
ERBIUM
EXPERIMENTAL DATA
GLASS
HAFNATES
HAFNIUM COMPOUNDS
HOLMIUM
INFORMATION
MATERIALS
MEASURING METHODS
METALS
NEODYMIUM
NUMERICAL DATA
OPTICAL PROPERTIES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRASEODYMIUM
RARE EARTHS
REFRACTORY METAL COMPOUNDS
SAMARIUM
SPECTROSCOPY
THULIUM
TRANSITION ELEMENT COMPOUNDS