Optical properties of Pr-doped BaY{sub 2}F{sub 8}

Journal Article · Thu Aug 07 04:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4892111· OSTI ID:22314545

Mello, Ana C. S. de; Valerio, Mário E. G. ^[1]; Rezende, Marcos V. dos S. ^[2]; Baldochi, Sonia L. ^[3]

---

1. Physics Department, Federal University of Sergipe, 49100-000 São Cristovão, SE (Brazil)
2. Physics Department, Federal University of Sergipe, 49500-000 Itabaiana, SE (Brazil)
3. IPEN-CNEN/SP, CEP 11049, 05422-970 São Paulo, SP (Brazil)

Crystalline samples of Pr-doped BaY{sub 2}F{sub 8} (BaYF) were prepared by zone melting technique. The pure phase obtained was identified by X-ray diffraction measurement. Optical absorption result was evaluated and it showed that the formation of the absorption bands can be connected to color centers generated by radiation in the matrix. Radioluminescence emission measurements after excitation by X-ray showed that the material exhibited components responsible for long lasting phosphorescence. Short decay times were also evaluated, the measurements showed a fast component around 70 ns associated to the 4f{sup 1}5d{sup 1} → 4f{sup 2} transition of the Pr{sup 3+} ion. The Thermoluminescence (TL) results indicate the presence of two trapping centers.

• OSTI ID: 22314545
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 5 Vol. 116; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION
COLOR CENTERS
DOPED MATERIALS
OPTICAL PROPERTIES
PHOSPHORESCENCE
PRASEODYMIUM IONS
RADIOLUMINESCENCE
THERMOLUMINESCENCE
X RADIATION
X-RAY DIFFRACTION
ZONE MELTING