Abstract
Ground state energy levels of the Fe paramagnetic impurity ion in stoichiometric LiTaO3 and in congruent LiTaO3 single crystals were calculated with electron paramagnetic resonance constants. Energy levels between six energy levels were obtained with spectroscopic splitting parameter g and zero field splitting constant D for Fe ion. The energy diagrams of Fe ion were different from different magnetic field directions ([100], [001], [111]) when magnetic field increases. The calculated ZFS energies of Fe ion in stoichiometric and congruent LiTaO3 single crystals for |± 5/2> ↔ |± 3/2> and |± 3/2> ↔ |± 1/2> transitions were 12.300 GHz and 6.150 GHz, and 59.358 GHz and 29.679 GHz, respectively. It turns out that energy levels of Fe paramagnetic impurity in LiTaO3 crystal are different from different crystal growing condition.
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