-
- Home
- Journals
- Bulletin of Materials Science
- Volume 34
- Issue 4
-
Energy transfer and thermal studies of Pr3+ doped cerium oxalate crystals
R Pragash Gijo Jose N V Unnikrishnan C Sudarsanakumar
Volume 34 Issue 4 July 2011 pp 955-961
-
-
Fulltext
Click here to view fulltext PDF
Permanent link:
https://www.ias.ac.in/article/fulltext/boms/034/04/0955-0961 -
Keywords
Optical materials ;crystal growth ;optical spectroscopy ;thermal analysis. -
Abstract
Energy transfer process at room temperature for cerium (sensitizer) oxalate single crystals doped with different concentrations (10, 13, 15, 17 and 20%) of praseodymium ions (activator) grown by hydro silica gel method has been evaluated. The analysis of energy level diagrams of cerium and praseodymium ions indicates that the energy gap between the sensitizer and the activator ions varies in a small range suggesting a possible energy transfer from the Ce3+ to Pr3+. The emission and absorption spectra of these crystals were recorded. The overlapping of the absorption spectra of Pr3+ and emission spectra of Ce3+ at wavelengths 484 and 478 nm, respectively, strongly supports the possible energy transfer process in this system. From the absorption spectra, oscillator strength, electric dipole moment, branching ratio and Judd–Ofelt parameters of this system were evaluated by least square programming. The quantum efficiency, energy transfer probabilities and thermal properties have been studied.
-
Author Affiliations
R Pragash1 Gijo Jose1 N V Unnikrishnan1 C Sudarsanakumar1
- School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam, India
-
Dates
- Published
- July 2011
- Manuscript received
- 7 December 2009
- Manuscript revised
- 12 August 2010
-
-
Bulletin of Materials Science
Volume 44, 2021
All articles
Continuous Article Publishing mode
-
Bulletin of Materials Science | News
-
Dr Shanti Swarup Bhatnagar for Science and Technology
Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020 -
Editorial Note on Continuous Article Publication
Posted on July 25, 2019Click here for Editorial Note on CAP Mode
-