Accession Number:

ADA030658

Title:

Rare Earth Ion-Host Lattice Interactions. 9. Lanthanides in YAsO4

Descriptive Note:

Technical rept.

Corporate Author:

HARRY DIAMOND LABS ADELPHI MD

Personal Author(s):

• Wortman, Donald E.
• Karayianis, Nick
• Morrison, Clyde A.

Report Date:

1976-08-01

Pagination or Media Count:

107.0

Abstract:

Phenomenological even-fold crystal field parameters, Bkm for D2d site symmetry are determined that yield a least-rms deviation of 6.7 cm between calculated and measured energy levels for Er3 in YAsO4. Crystal field components, Akm, are determined by a sum over the YAsO4 lattice, and Bkm are then calculated for the lanthanides in this material. These parameters are used to calculate Stark split energy levels and squared-matrix elements of the electric dipole operator between the energy states for the triply ionized lanthanides in YAsO4.

Descriptors:

• *ENERGY LEVELS
• *ARSENIC COMPOUNDS
• *YTTRIUM COMPOUNDS
• *RARE EARTH ELEMENTS
• *LASER MATERIALS
• NEODYMIUM
• PRASEODYMIUM
• ELECTRON TRANSITIONS
• ELECTROSTATIC FIELDS
• ERBIUM
• HOLMIUM
• THULIUM
• TERBIUM
• DYSPROSIUM
• TABLES(DATA)
• OXIDES
• CRYSTAL LATTICES
• INTERACTIONS
• IONS
• FLUORESCENCE

Subject Categories:

• Lasers and Masers
• Crystallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE