Growth and optical properties of partially transparent Eu doped CaF{sub 2} ceramic

Journal Article · Thu Apr 24 00:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4872685· OSTI ID:22269519

Ghosh, Manoranjan; Sen, Shashwati; Shinde, Seema

Partially transparent ceramic of 2 at.% Eu doped CaF{sub 2} have been grown preferentially towards [111] direction. For this purpose, Eu doped CaF{sub 2} nanoparticles (size∼12 nm) obtained by a low temperature solution growth method has been pressed at 1000°C under vacuum. The preferentially grown ceramic shows 15% transparency within the visible range of spectrum. As confirmed by the X-ray diffraction result, the hot pressed ceramic exhibits reduced lattice volume than the nanopowder. It indicates Eu{sup 3+} as the dominant substituting ions at the Ca{sup 2+} sites of CaF{sub 2} lattice in the hot pressed ceramic material. It is corroborated by the photoluminescence results of hot pressed ceramic which shows strong red emission corresponding to Eu{sup 3+} sites. However, photoluminescence of nanopowder exhibits intense peak in the blue region of the spectrum which is characteristics of Eu2+ sites.

• OSTI ID: 22269519
• Journal Information: AIP Conference Proceedings, Vol. 1591, Issue 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
CALCIUM FLUORIDES
CALCIUM IONS
CERAMICS
CRYSTAL GROWTH
DOPED MATERIALS
EMISSION SPECTRA
EUROPIUM COMPOUNDS
EUROPIUM IONS
NANOSTRUCTURES
OPACITY
PHOTOLUMINESCENCE
POWDERS
X-RAY DIFFRACTION