Point defects in crystalline zircon (zirconium silicate), ZrSiO 4 : electron paramagnetic resonance studies

Electron paramagnetic resonance study of rare-earth related centres in K2YF5:Tb3+ thermoluminescence phosphors

“…Extra confirmation of our identification of T1 and T2 as Tb 4+ centres comes from a limited number of literature reports on Tb 4+ in oxide crystals [18][19][20][21][22][23][24]. In these papers, the secondorder ZFS parameters for Tb 4+ centres were found to be typically an order of magnitude larger than those for Gd 3+ centres in the same (or very similar) environments.…”

The electron spin resonance study of Gd3+ in natural zircon

“…(1) were calculated from the resonance magnetic field positions in the ESR spectra by using the EPR-NMR program [10]. The obtained parameters are shown in Table 1 and the results are in good agreement with those of Hutton and Troup [5].…”

“…The crystal field splitting for Gd 3+ is generally smaller than that produced by the Zeeman interaction in the X-band ESR experiments. The ESR spectra can be described by a spin Hamiltonian incorporating with Zeeman interaction, hyperfine structure and crystal field operators [5,7,8] as given by equation:…”

“…Laruhin Tb 3+ from the ESR spectra [6]. Hutton and Troup, the first researcher group who reported the spin Hamiltonian analyses of Gd 3+ in natural single-crystal zircon at 77 and 290 K by using the X-and Q-band measurements on ESR spectrometer [5].…”

The Changed Crystal Filed of Gd3+ in Natural Zircon with Heat Treatment in Oxidizing and Reducing Atmosphere Monitor by ESR Spectroscopy

“…The state 8 S 7/2 splits into 2S+1 = 8 states, then the seven allowed transitions according to the selection rule, ∆M S = ±1, are obtained [2][3][4][5][6]. The ESR spectra can be described by a spin Hamiltonian incorporating with Zeeman interaction, hyperfine structure and crystal field operators [7][8][9] are given by equations:…”