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In this study, we determine that the electron paramagnetic resonance line-width (EPRLW) is axially symmetric about the c-axis and analyze the spin Hamiltonian with an isotopic g-factor of 1.9920 at a frequency of 9.5 GHz. It should be noted that the electron paramagnetic resonance signals are Lorentzian. Our findings show that the EPRLW decreases exponentially with an increase in the temperature; i.e., its temperature dependence in the range 300-400 K obeys Arrhenius behavior, this kind of temperature dependence indicates an off-center a motional narrowing of the spectrum when Mn 2+ impurity ions substitute for Nb 5+ ions. The specific heats follow a linear dependence suggesting a simple Debye T 3 behavior.

Thermal Properties of Mn-doped LiNbO3Crystals from Magneto-Optical Transitions

Thermal Properties of Mn-doped LiNbO₃Crystals from Magneto-Optical Transitions