Theoretical study of the Raman spectra of Zn1−xFexSe in magnetic field and at high pressure

Theoretical study of pressure shift for R line of Cr3+ ion in lanthanum lutetium gallium garnet

“…The orbitals of the molecular-orbital model are the linear combinations of the d-orbitals of Cr 3+ and the outermost s and p-orbitals of O in LLGG are given by [9,10] π π…”

“…It is especially interesting for Cr 3+ ions, since the low strength of the crystal field profoundly affects the luminescence properties of this dopant [1,2] where B and C are Racah parameters and Dq the cubic crystal-field parameter. Obviously, the increase of the strength of the crystal field, due to the increase of the pressure, reflected by the increase of the Dq parameter, should lead to an increase of the energy of the Recently, a series of theoretical studies [9,10] based on a molecular-orbital model deals well with the optical and magnetic experiments for Fe 2+ (3d…”