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A Theoretical Analysis of Zero Field Splitting of Mn^{2+} in Ammonium Oxalate Monohydrate

100%

Kripal R., Pandey S.

issue 4

629-632

The superposition model has been used to investigate the substitution of Mn^{2+} in ammonium oxalate monohydrate. The zero field splitting parameters D and E calculated by the superposition model are compared with the experimental values D_{exp} and E_{exp}, respectively, for Mn^{2+} obtained by electron paramagnetic resonance. Both the zero field splitting parameters D and E calculated theoretically are in good agreement with the experimental values D_{exp} and E_{exp}. The result indicates that the Mn^{2+} ion substitutes for the NH_4^{+} ion in ammonium oxalate monohydrate.

Zero-Field Splitting Parameters of Cr^{3+} in Lithium Potassium Sulphate at Orthorhombic Symmetry Site

100%

Pandey S., Kripal R.

Acta Physica Polonica A

2013

vol. 123

issue 1

101-105

The superposition model is used to investigate the crystal field parameters, B_{kq} of Cr^{3+} in lithium potassium sulphate. The zero field splitting parameters D and E are then determined using microscopic spin Hamiltonian theory and compared with the experimental values obtained by electron paramagnetic resonance. Both zero field splitting parameters D and E evaluated theoretically are in good agreement with the experimental values. The results suggest that the Cr^{3+} ion occupies substitutional K^{+} site in lithium potassium sulphate.

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2 Acta Physica Polonica A

1 2013

1 2010

2 Kripal R.

2 Pandey S.

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A Theoretical Analysis of Zero Field Splitting of Mn^{2+} in Ammonium Oxalate Monohydrate

Zero-Field Splitting Parameters of Cr^{3+} in Lithium Potassium Sulphate at Orthorhombic Symmetry Site