EPR and optical studies of VO2+ doped diglycine calcium chloride tetrahydrate single crystals

Theoretical investigation of EPR and optical spectra of Mo(V) in [Mo6O19][N(C4H9)4]3 salt

“…In the present work, two bands (11,600 and 20,400 cm À 1 ) of the assignments are, respectively, 2 B 2g -2 B 1g and 2 B 2g -2 A 1g transitions. The d-d transitions obtained from the above calculations are consistent with many research results for a d 1 ion in tetragonally compressed octahedron [18][19][20][21] and can be regarded as rational. g factors varied with the R J as shown in Fig.…”

“…1, the effect of an Table 2 octahedral environment on the d orbitals of a TM ion may be treated as a splitting of the original group of five orbitals into three lower 2 T 0 2g and two upper 2 E 0 g orbitals under cubic field. There are many reports on the C 4v crystal field [18][19][20][21], the 2 T 2g level is further split into 2 B 2g (9d xy S) and 2 E g (9d xz S, 9d yz S) levels, and 2 E 0 g level into 2 B 1g (9d x 2 Ày 2 S)and 2 A 1g (9d z 2 S) levels. Thus, the assigned transitions of the literature [6] may be inaccurate.…”

Synthesis and structural characterization of a new SbPO4-GeO2 glass system

“…The +5 (diamagnetic) and the +4 (paramagnetic) are the most frequent valence states of vanadium in oxide glasses [23,24]. In these glasses, the V 4+ ion appears almost exclusively as a vanadyl form, VO 2+ [25][26][27]. EPR has been successfully employed in glass research because the VO 2+ EPR spectra is easily observable until room temperature and the spin-Hamiltonian parameters, such as the g-tensor and the hyperfine coupling A-tensor are sensitive to the local environment around a paramagnetic species and the changes in the coordination geometry and ligand binding resulting from, for example, thermal treatments of glasses [28][29][30].…”

Synthesis and characterization of Dy 3 Fe 5 O 12 nanoparticles fabricated with the anion resin exchange precipitation method

“…MCD is the differential absorption of electromagnetic waves polarized over the left and right circle relative to the magnetic field vector (or magnetization of a substance), oriented parallel to the direction of the wave propagation. This effect is widely used in the chemistry of both organic and complex inorganic compounds and in biological studies (for example, [17]). As a rule, MCD spectra are characterized by narrow lines, which make it possible to obtain reliable information on optical resonances, in particular, associated with electron transitions in different sub-lattices in the case of ferrimagnetic substance.…”