Theoretical studies of the spin Hamiltonian parameters and the local structures for the tetragonal Cu2+ centers in the LKB glasses

Theoretical studies of the EPR parameters and local structures for the two Cu2+ centers in Cd(HCOO)2·2H2O

“…c . Actually, experimental determination of the signs of hyperfine structure constants for 3d n ions in crystals is very difficult . So, the observed A i from EPR measurements are actually the absolute values.…”

“…Ā k ( R ) are the intrinsic parameters. For 3d n ions in octahedra, the relationship Ā 2 ( R ) ≈ 12 Ā 4 ( R ) have been proved to be reasonable in many systems and can be properly utilized here …”

Physical and optical properties of Co2+, Ni2+ doped 20ZnO+xLi2O+(30−x)K2O+50B2O3 (5≤x≤25) glasses: Observation of mixed alkali effect

“…Therefore the study of MAE phenomenon is an important issue of studies in materials due to its scientific as well as technological aspect. Recently several authors reported MAE in various glass systems by changing the composition of alkali ions the glass systems [11][12][13][14][15][16][17]. Transition metal ions in the glasses are usually applied as probes to provide useful information about electronic states and local structures by means of spectroscopic techniques [6,[11][12][13][14][15][16][17].…”