Spectroscopic and EPR study of cerium pentaphosphate

Journal Article · Sun May 01 04:00:00 EDT 1977 · Mater. Res. Bull.; (United States)

DOI:https://doi.org/10.1016/0025-5408(77)90110-6· OSTI ID:7086496

Blanzat, B ^[1]; Denis, J P; Pannel, C; Barthou, C

---

1. CNRS, Bellevue, France

Under ultraviolet excitation cerium pentaphosphate CeP/sub 5/O/sub 14/ shows emission with a quantum efficiency almost independent of the Ce/sup 3 +/ concentration and temperature. Energy transfer between the Ce/sup 3 +/ ions is not efficient. Decay measurements have been performed and Ce/sup 3 +/ decays with tau 1 = 13 10/sup -9/s and tau 2 = 41 10/sup -9/s independently of Ce/sup 3 +/ concentration and temperature. The electron spin resonance spectra of Gd/sup 3 +/ in Ce/sub 1-x/Gd/sub x/P/sub 5/O/sub 14/ twin-free crystals are reported and the angular variations of the absorption lines have been fitted to the spin Hamiltonian correspondng to Cs symmetry Twin-free crystals, selected by EPR measurements, exhibit only the tau 2 lifetime, tau 1 can be induced mechanically in the course of the crash of the initially twin-free crystal.

• OSTI ID: 7086496
• Journal Information: Mater. Res. Bull.; (United States), Journal Name: Mater. Res. Bull.; (United States) Vol. 12:5; ISSN MRBUA
• Country of Publication: United States
• Language: French

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ATOMIC IONS
CERIUM COMPOUNDS
CERIUM IONS
CERIUM PHOSPHATES
CHARGED PARTICLES
ELECTRON SPIN RESONANCE
EMISSION SPECTROSCOPY
ENERGY-LEVEL TRANSITIONS
EXCITATION
IONS
MAGNETIC RESONANCE
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
RARE EARTH COMPOUNDS
RESONANCE
SPECTRA
SPECTROSCOPY