Zeeman and laser site selective spectroscopy of C₁ point group symmetry Sm³⁺ centres in Y₂SiO₅: a parametrized crystal-field analysis for the 4f ⁵ configuration

Abstract

Parametrized crystal-field analyses are presented for both the six and seven fold coordinated, C1 symmetry Sm3+ centers in Y2SiO5, based on extensive spectroscopic data spanning the infrared to optical regions. Laser site-selective excitation and fluorescence spectroscopy as well as Zeeman absorption spectroscopy performed along multiple crystallographic directions has been utilised, in addition to previously determined g tensors for the 6H5/2Z1 and 4G5/2A1 states. The resultant analyses give good approximation to the experimental energy levels and magnetic splittings, yielding crystal-field parameters consistent with the few other lanthanide ions for which such analyses are available.

Zeeman spectroscopy and crystal-field analysis of low symmetry centres in Nd3+ doped Y2SiO5

“…Recently, crystal-field analyses have been performed for several different RE ions in the C 1 centres of Y 2 SiO 5 , including Ce 3+ , Sm 3+ , Ho 3+ , Er 3+ , and Yb 3+ [18][19][20][21][22][23]. In this work, we report on Zeeman absorption spectroscopy and parameterised crystal-field modelling of both Nd 3+ centres in Y 2 SiO 5 through the use of experimentally inferred crystal-field energy levels and Zeeman directional electronic g values as well as utilising the electron paramagnetic resonance (EPR) measured ground-state g tensor.…”