Study of Hyperfine and Fine Interactions of Nd3+ and Ce3+ Ions in LaNbO4 and PrNbO4 Crystals by X-Band EPR at Liquid-Helium Temperatures
SK Misra, SI Andronenko - The Journal of Physical Chemistry B, 2004 - ACS Publications
SK Misra, SI Andronenko
The Journal of Physical Chemistry B, 2004•ACS PublicationsEPR studies on diamagnetic LaNbO4 and paramagnetic PrNbO4 crystals doped with the
Kramers ions Nd3+ and Ce3+ were carried out at X-band (9.61 GHz) in the 4− 30 K
temperature range. The principal values of Nd3+ and Ce3+ g̃ 2 and à 2 tensors, and the
orientations of their principal axes, were determined accurately from angular variations of
EPR line positions recorded for rotation of the external magnetic field in three mutually
perpendicular planes in the two crystals at 8 K. The larger EPR line widths of these ions in …
Kramers ions Nd3+ and Ce3+ were carried out at X-band (9.61 GHz) in the 4− 30 K
temperature range. The principal values of Nd3+ and Ce3+ g̃ 2 and à 2 tensors, and the
orientations of their principal axes, were determined accurately from angular variations of
EPR line positions recorded for rotation of the external magnetic field in three mutually
perpendicular planes in the two crystals at 8 K. The larger EPR line widths of these ions in …
EPR studies on diamagnetic LaNbO4 and paramagnetic PrNbO4 crystals doped with the Kramers ions Nd3+ and Ce3+ were carried out at X-band (9.61 GHz) in the 4−30 K temperature range. The principal values of Nd3+ and Ce3+ g̃2 and Ã2 tensors, and the orientations of their principal axes, were determined accurately from angular variations of EPR line positions recorded for rotation of the external magnetic field in three mutually perpendicular planes in the two crystals at 8 K. The larger EPR line widths of these ions in the paramagnetic PrNbO4 host crystal as compared to those in diamagnetic LaNbO4 are ascribed to their interaction with the host Pr3+ ions and presence of defects.
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