Optical spectra and Zeeman effect for Pr3+ and Nd3+ in LuPO4 and YPO4

Abstract

Absorption spectra of Pr3+ and Nd3+ diluted in LuPO4 and YPO4 crystals have been measured from 4000 to 30 000 cm−1, at liquid He and N2 temperatures. Fluorescence was observed for Pr3+ and Nd3+ in YPO4, and Zeeman spectra were obtained in the visible region. The transitions were assigned and fit to a semiempirical Hamiltonian with adjustable parameters via a least squares procedure. Satisfactory fits and reasonable agreement between calculated and measured g values were obtained.

Study of the ground multiplet of Kramers rare earth ions in solid matrices by multifrequency electron paramagnetic resonance spectroscopy: Nd3+ in PbWO4 single-crystals

“…The analysis of the optical spectra shows that the four excited doublets of the ground multiplet 4 I 9/2 are located above the lowest-lying doublet at a few hundred cm −1 , the closest one being at about 100 cm −1 . 9 Similar ground CFS was found for Nd 3+ ions in scheelite and Zircon-type NMO 4 hosts, [10][11][12] or for other Re 3+ Kramers ions in solid matrices. [13][14][15] As a result, the EPR spectra of the Nd 3+ ions measured at high frequencies ͑3-10 cm −1 ͒ and low temperatures are expected to be well described by a spin Hamiltonian ͑SH͒ with an effective spin one-half.…”

“…The analysis of the optical spectra shows that the overall splitting of the ground multiplet of the Nd 3+ in different zircon or scheelite NMO 4 ͑N = Ca, Sr, Pb, Ba, Lu, Y; M =Mo, P͒-type matrices is about 400 cm −1 , [9][10][11][12]29,30 the closest one being at about 100 cm −1 . Although the CFS of the Nd 3+ ground multiplet in the above matrices is similar, the g-factors are very different.…”

Magnetic properties of the lanthanide phosphates

“…Similar measurements involved cerium, neodymium, dysprosium, erbium, ytterbium and uranium at low abundance in single crystals [7]. Optical studies were made by Hayhurst et al [8,9] on erbium, praseodymium and neodymium in the phosphates of yttrium and lutetium. The g-values for a number of ions with doublet ground states in these two phosphates are given in Table 1.…”

Coherent Transient and Holeburning Spectroscopy of Rare Earth Ions in Solids

“…The energy level structure was studied by Hayhurst et al (1982) using absorption and emission spectroscopy and a crystal field calculation was carried out which gave a generally good description of the observed levels ( fig. The energy level structure was studied by Hayhurst et al (1982) using absorption and emission spectroscopy and a crystal field calculation was carried out which gave a generally good description of the observed levels ( fig.…”

“…In zero field, optical pumping of the ground state hyperfine components of 141 Pr 3+ should not occur in rigorously axial symmetry because M 1 is a . In the ground state, the wave functions are not symmetry determined, but we use the eigenvector compositions of Hayhurst et al (1982) to determine the value of the enhanced nuclear moments with much better results than in 1 D 2 . These are almost exactly in the axial ratio of 1:2 showing that the site symmetry is extremely close to D 2d .…”