Analysis of paramagnetic centers for threevalent iron in aluminosilicates

4th International Conference on Mathematical Modeling in Physical Sciences

物理学;数学

Apushkinskaya, D.^1 ; Apushkinskiy, E.^2 ; Popov, B.^2 ; Romanov, V.N.^2 ; Saveliev, V.^2 ; Sobolevskiy, V.^2

Department of Mathematics, Saarland University, Saarbrücken, Germany^1

St. Petersburg Polytechnical University, St.-Petersburg, Russia^2

关键词: Angular dependence;    Cubic symmetry;    Electron paramagnetic resonances (EPR);    EPR spectra;    High spin state;    Orthorhombic symmetry;    Paramagnetic centers;    Paramagnetic ions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/633/1/012115/pdf
DOI  :  10.1088/1742-6596/633/1/012115

来源: IOP

【 摘 要 】

We present the results of investigation of the defects in fluorine aluminosilicates from the Volyn-field Al2[SiO4][F,OH]2by the Electron Paramagnetic Resonance (EPR) method. The studies were carried out on the spectrometer Bruker ER 220D. Three types of EPR spectra of single centers were obtained. Their angular dependence was also investigated. The obtained EPR spectra correspond to the paramagnetic ion Fe3+in the high-spin state S = 5/2. Three types of paramagnetic centers were found: one with cubic-symmetry and two with orthorhombic- symmetries.