EPR observations of trivalent titanium in orthophosphate single crystals

Journal Article · Tue Jul 01 04:00:00 EDT 1986 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.451638· OSTI ID:5751672

Abraham, M M; Boatner, L A; Aronson, M A

The ground state spectroscopic properties of the 3d/sup 1/ electronic configuration ion Ti/sup 3 +/ have been investigated using EPR spectroscopy. Trivalent titanium was incorporated as a dilute impurity in single crystals of the tetragonal, zircon-structure hosts ScPO/sub 4/, YPO/sub 4/, and LuPO/sub 4/. The EPR spectrum of Ti/sup 3 +/ was observed in the as-grown orthophosphate crystals, and low temperature irradiations were not required to produce the trivalent state. The EPR results show that Ti/sup 3 +/ occupies a substitutional cation site in the host orthophosphate single crystals. Axial spin-Hamiltonian parameters were determined at 77 K, and these results are compared to those obtained previously for the 4d/sup 1/ and 5d/sup 1/ configuration ions Zr/sup 3 +/ and Hf /sup 3 +/ in the same host crystals. Titanium-doped orthophosphate crystals containing isotopically enriched /sup 47/Ti or /sup 49/Ti were also grown and employed in determinations of the hyperfine parameters. The g-values observed here for Ti/sup 3 +/, and determined previously for Zr/sup 3 +/ and Hf /sup 3 +/ are not accounted for by the published second-order expressions indicating that additional coupling mechanisms are operative.

• Research Organization: Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5751672
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 85:1; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202* -- Isotope Effects
Isotope Exchange
& Isotope Separation
ALLOYS
CHARGED PARTICLES
CRYSTALS
ELECTRON SPIN RESONANCE
EVEN-ODD NUCLEI
HYPERFINE STRUCTURE
IMPURITIES
INTERMEDIATE MASS NUCLEI
IONS
ISOTOPE EFFECTS
ISOTOPES
LUTETIUM COMPOUNDS
LUTETIUM PHOSPHATES
MAGNETIC RESONANCE
MANAGEMENT
MONOCRYSTALS
NUCLEI
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
RADIOACTIVE WASTE DISPOSAL
RARE EARTH COMPOUNDS
RESONANCE
SCANDIUM COMPOUNDS
SCANDIUM PHOSPHATES
STABLE ISOTOPES
TITANIUM 47
TITANIUM 49
TITANIUM ADDITIONS
TITANIUM ALLOYS
TITANIUM IONS
TITANIUM ISOTOPES
TRANSITION ELEMENT COMPOUNDS
WASTE DISPOSAL
WASTE MANAGEMENT
YTTRIUM COMPOUNDS
YTTRIUM PHOSPHATES