Submillimeter EPR of non-Kramers impurity centers in synthetic forsterite

Gil'man S. Shakurov; Valery F. Tarasov

doi:10.1117/12.293456

1 November 1997 Submillimeter EPR of non-Kramers impurity centers in synthetic forsterite

Gil'man S. Shakurov, Valery F. Tarasov

Proceedings Volume 3176, Tunable Solid State Lasers; (1997) https://doi.org/10.1117/12.293456
Event: Tunable Solid State Lasers, 1996, Wroclaw, Poland

Abstract

Electron paramagnetic resonance of tow new paramagnetic centers, formed by non-Kramers ions of iron group in synthetic forsterite is studied at frequencies range 65-350 GHz. The measurements were performed at 4.2 K in magnetic fields up to 0.8 T. It was established that the first center is due to Ni²⁺ in the M1 position with inverse symmetry. The angles between projections of the principal magnetic axes of four magnetically non-equivalent centers and axis b of crystal lattice are +/- 49 degrees and +/- 7 degrees in the bs and ab planes respectively. The fine structure parameters of this center were measured to be D equals 230.5 Hz and E equals 4 GHz. For the second center the only resonance transition was observed with zero field splitting 96.5 GHz. We suppose that it is transition between +2 > and -2 > states of Fe(superscript 2+ ions in the M1 position. For this center magnetic axes are misaligned from the a axis on +/- 3.5 degrees and +/- 12.5 degrees in the ab and ac planes respectively. Direct measurement of the ZFS for non-Kramers ions in forsterite revealed additional signals at zero field.

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Gil'man S. Shakurov and Valery F. Tarasov "Submillimeter EPR of non-Kramers impurity centers in synthetic forsterite", Proc. SPIE 3176, Tunable Solid State Lasers, (1 November 1997); https://doi.org/10.1117/12.293456

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