Point-charge and induced-dipole model analysis of spin-Hamiltonian parameters forGd3+-doped single crystals of rare-earth trifluorides

1983 ◽  
Vol 27 (6) ◽  
pp. 3425-3428 ◽  
Author(s):  
Norman R. Lewis ◽  
Sushil K. Misra
Keyword(s):  
Rare Earth ◽  
Single Crystals ◽  
Point Charge ◽  
Model Analysis ◽  
Dipole Model ◽  
Spin Hamiltonian ◽  
Induced Dipole ◽  
Hamiltonian Parameters ◽  
Rare Earth Trifluorides

Electron spin resonance of Mn2+ in Cd2V2O7

1968 ◽  
Vol 46 (7) ◽  
pp. 807-810 ◽  
Author(s):  
Carl V. Stager
Keyword(s):  
Electron Spin Resonance ◽  
Single Crystals ◽  
Electron Spin ◽  
Point Charge ◽  
Reasonable Agreement ◽  
Spin Hamiltonian ◽  
Point Charge Model ◽  
Charge Model ◽  
Spin Resonance ◽  
Hamiltonian Parameters

The electron spin resonance of Mn2+ impurities has been investigated in single crystals of Cd2V2O7. The spin-Hamiltonian parameters are gx = 2.0004(8), gy = 1.9995(8), gz = 2.0001(8), b20 = −419(1)g, b22 = 125(2)g, Ax = −86.7(3)g, Ay = −87.0(10)g, and Az = −87.4(5)g. The results have been compared with similar studies on isomorphic crystals and with a calculation employing the point-charge model for the crystal field. The model gives reasonable agreement with the experimental results.

Investigations of the spin Hamiltonian parameters for VO2+ ions in KZnClSO4 ⋅ 3H2O single crystals

2017 ◽  
Vol 31 (02) ◽  
pp. 1650262
Author(s):  
Chao Tu ◽  
Linhua Xie ◽  
Xiangrong Du
Keyword(s):  
Single Crystals ◽  
Coupling Model ◽  
Spin Hamiltonian ◽  
Third Order ◽  
Ion Clusters ◽  
Mechanism Model ◽  
Double Spin ◽  
State Formula ◽  
High Valence State ◽  
Hamiltonian Parameters

The spin Hamiltonian parameters of VO[Formula: see text] in KZnClSO[Formula: see text]3H2O single crystals are calculated from the third-order perturbation formulas based on the double spin–orbit coupling model for the tetragonal transition-ion clusters in crystals with the ground state [Formula: see text]. In the paper, both the crystal-field (CF) mechanism and the charge-transfer (CT) mechanism (double-mechanism model) are considered to calculate the spin Hamiltonian parameters. The calculated results are in agreement with the experimental data. Moreover, the calculated results show that the CT mechanism cannot be omitted for a high-valence state V[Formula: see text] ions in KZnClSO[Formula: see text]3H2O single crystals. The tetragonal field parameters are also acquired in the paper.

Epr of Mn2+ in Ni(CH3COO)2 4H2O and K2 Ni(SO4)2 6H2O

1980 ◽  
Vol 3 ◽  
Author(s):  
Sushil K. Misra ◽  
M. Jalochowski
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Magnetic Properties ◽  
Transition Temperature ◽  
Single Crystals ◽  
Liquid Helium ◽  
Liquid Nitrogen ◽  
Spin Hamiltonian ◽  
Paramagnetic Resonance ◽  
Hamiltonian Parameters ◽  
Electron Paramagnetic

ABSTRACTThe technique of electron paramagnetic resonance has been applied to study the magnetic properties of nickel acetate and nickel potassium tutton salt single crystals, using Mn2+ ion as probe. From the values of spin Hamiltonian parameters and linewidths at room, liquid nitrogen and liquid helium temperatures it is concluded that these crystals do not become magnetically ordered as the temperature is lowered to 3.2K, and thus the transition temperature, below which the crystal would order either ferromagnetically, or antiferromagnetically, for these crystals, should be below 3.2K.

EPR Studies of Mn2+-Doped Diammonium Hexaaqua Magnesium(II) Sulfate

2006 ◽  
Vol 61 (12) ◽  
pp. 683-687 ◽  
Author(s):  
Ram Kripal ◽  
Ashutosh Kumar Shukla
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Fine Structure ◽  
Single Crystals ◽  
Room Temperature ◽  
Spin Hamiltonian ◽  
Epr Spectrum ◽  
Paramagnetic Resonance ◽  
X Band ◽  
Hamiltonian Parameters ◽  
Electron Paramagnetic

Electron paramagnetic resonance (EPR) studies of Mn2+ impurity in single crystals of diammonium hexaaqua magnesium(II) sulfate have been carried out at 9.3 GHz (X-band) at room temperature. The EPR spectra exhibit a group of five fine structure transitions. The spin-Hamiltonian parameters were determined. Mn2+ enters the lattice interstitially. The EPR spectrum of a powder sample supports the data obtained by single crystal studies. - PACS number: 76.30

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