Accession Number:

AD0628401

Title:

THE GROUND STATES AND RELATIVE STARK SPLITTINGS OF SOME TRIVALENT RARE EARTH IONS IN THE CUBIC CRYSTAL FIELD OF CALCIUM FLUORIDE,

Descriptive Note:

Corporate Author:

SOREQ RESEARCH ESTABLISHMENT ISRAEL ATOMIC ENERGY COMMISSION YAVNEH

Personal Author(s):

Report Date:

1964-05-01

Pagination or Media Count:

26.0

Abstract:

The ratios B4B6 of the cubic crystal field parameters are calculated from electron spin resonance on CaF2Nd3 and CaF2Dy3, and the results are used to show that the ratio A4A6 is not constant, as required by the point charge model. A linear expression of A4A6 as a function of Z is constructed from the available data. The integrals r4 and r6 of Freeman and Watson are used in deducing BrB6 for the trivalent rare earth ions. Eigenfunctions and eigenvalues of Lea, Leask and Wolf are employed in deducing the ground states and relative Stark splittings of the rare earth ions. The ground states are Pr3gamma-5 Nd3gamma-8 Pm3gamma-1 Tb3gamma-3 Dy3Gamma-8 Ho3gamma-3 Er3gamma-7 Tm3gamma-2 Yb3gamma-7. Optical spectra are discussed. Author

Subject Categories:

  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE