1EPR Laboratory, Department of Physics, University of Allahabad, Allahabad, 211002 India 2Department of Physics, Buddha P. G. College, Kushinagar, (U. P.) India
Electron Paramagnetic Resonance of Mn2+-Doped Cadmium Formate Dihydrate Single Crystals
1EPR Laboratory, Department of Physics, University of Allahabad, Allahabad, 211002 India 2Department of Physics, Buddha P. G. College, Kushinagar, (U. P.) India
摘要An electron paramagnetic resonance (EPR) study on Mn2+ doped Cadmium formate dihydrate single crystals is carried out. The EPR spectrum at room temperature exhibits only one out of five fine structural transitions which split into six hyperfine lines in all directions. The spectrum is simulated using the EasySpin program and evaluated spin Hamiltonian parameters. The simulated EPR spectrum is in good agreement with the experiment. By comparing direction cosines of spectroscopic splitting factor g and the direction cosines of different bonds determined by the crystal structure data it is found that Mn2+ enters the lattice substitutionally and only one Mn2+ site is identified. The obtained g and the hyperfine interaction constant A achieved are g=2.006±0.002, A=(98±2)×10−4 cm−1 and the second-order axial zero-field splitting parameter D=(60±2)×10−4 cm−1.
Abstract：An electron paramagnetic resonance (EPR) study on Mn2+ doped Cadmium formate dihydrate single crystals is carried out. The EPR spectrum at room temperature exhibits only one out of five fine structural transitions which split into six hyperfine lines in all directions. The spectrum is simulated using the EasySpin program and evaluated spin Hamiltonian parameters. The simulated EPR spectrum is in good agreement with the experiment. By comparing direction cosines of spectroscopic splitting factor g and the direction cosines of different bonds determined by the crystal structure data it is found that Mn2+ enters the lattice substitutionally and only one Mn2+ site is identified. The obtained g and the hyperfine interaction constant A achieved are g=2.006±0.002, A=(98±2)×10−4 cm−1 and the second-order axial zero-field splitting parameter D=(60±2)×10−4 cm−1.
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