Title :
A theoretical study of the magnetic and magneto-optical properties of the Pr-substituted YIG
Author :
Jiehui Yang ; Zhang, Fang ; Xu, You ; Guillot, Maurice ; Le Gall, Henri
Author_Institution :
Dept. of Phys., Nanjing Univ., China
fDate :
9/1/1997 12:00:00 AM
Abstract :
The influence of Pr3+ substitution on the magnetic and magneto-optical properties of YIG is analyzed by using quantum theory. The temperature dependence of the Pr3+ magnetic moment is calculated in the 4.2-300 K temperature range. The Faraday rotation (FR) and Faraday ellipticity spectra at photon energies between 0.8 and 6 eV are determined as well. It is shown that the Pr3+ contributions to FR and to the magnetic moment depend strongly on the splitting of the 4f2 configuration induced by the crystal field and the Fe-Pr superexchange interaction. The resonance frequencies are mainly determined by the splitting of the 4f5d configuration. Good agreement between calculated and measured values of both the magnetic and magneto-optical properties proves the correctness of the model and of the parameters used
Keywords :
Faraday effect; crystal field interactions; garnets; infrared spectra; magnetic moments; magnetisation; praseodymium compounds; superexchange interactions; ultraviolet spectra; visible spectra; yttrium compounds; (PrY)3IG; 0.8 to 6 eV; 4.2 to 300 K; 4f5d configuration; 4f2 configuration splitting; Faraday ellipticity spectra; Faraday rotation; Fe-Pr superexchange interaction; PrxY3-xFe5O12; Pr3+ magnetic moment; Pr3+ substitution; PrYFe5O12; crystal field; magnetic properties; magneto-optical properties; photon energy range; quantum theory; resonance frequencies; temperature dependence; Magnetic analysis; Magnetic field measurement; Magnetic moments; Magnetic properties; Magnetic resonance; Photonic crystals; Quantum mechanics; Resonant frequency; Temperature dependence; Temperature distribution;
Journal_Title :
Magnetics, IEEE Transactions on
