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http://dx.doi.org/10.4283/JMAG.2012.17.4.255

Thermal Properties of Mn-doped LiNbO3 Crystals from Magneto-Optical Transitions  

Park, Jung-Il (Nano-Physics and Technology Laboratory, School of Physics and Energy Sciences, Kyungpook National University)
Publication Information
Journal of Magnetics / v.17, no.4, 2012 , pp. 255-260 More about this Journal
Abstract
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.
Keywords
electron paramagnetic resonance line-width (EPRLW); projection-isolation technique (PIT); magnetooptical transition; specific heat;
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