Electron-paramagnetic-resonance spectra ofNi2+-doped Zn(BF4

The EPR Zero-Field Splitting D and its Pressure and Temperature Dependence for Trigonal Mn2+ Centers in [Zn(H2O)6](BF4)2:Mn2+ Crystal

“…Since for 3d 7 6 ] 2+ octahedron decreases owing to an increase in pressure or a decrease in temperature, the trigonal distortion angle θ increases. So, these compressibilities and thermal expansion coefficients are physically reasonable.…”

Temperature dependence of the EPR spectrum of Co2+ ion in crystals Zn(BF4)2 × 6H2O

“…The electronic configuration of Co 2+ ion is 3d 7 , the effective electronic spin is S = 1/2, the nuclear spin is I = 7/2; therefore the absorption spectrum consists of eight lines. Spectrum measurements were produced in the planes zx, zy, and xy at 4.2 K. In Fig.…”

Synthesis and room temperature single crystal EPR studies of a dinickel complex having an Ni2(μ-phenoxide)2 2+ unit supported by a macrocyclic ligand environment [Ni2(L)2(OClO3)2] [L = 2-[(4-methyl-pyridin-2-ylimino)-methyl]-phenol]

“…However, there are very few reports in the literature about the study of this d 8 ion at room temperature. Most of the reported work concerns the study of this ion at 77 K or 4 K. [10][11][12][13][14][15][16][17][18][19][20][21][22] The g value is isotropic and close to 2⋅2. In general, if the zero-field splitting (D) is negligible, one would expect and observe a single EPR line.…”

“…Single-ion spin Hamiltonian parameters are determined for zinc fluoroborate hexahydrate doped with nickel(II) and compared with those obtained for the nickel fluoroborate hexahydrate. 11 EPR studies are carried out for several concentrations (x = 0⋅005 to 1) from room to liquid helium temperatures. However, for temperatures between 4⋅2 and 1⋅5 K and for low doping, the parameters are constant with g || = 2⋅229, g ⊥ = 2⋅261 and D = -0⋅1219 cm -1 .…”