Comment on “Crystal Field Model of the Magnetic Properties of URu2Si2”

1995 ◽  
Vol 74 (20) ◽  
pp. 4097-4097 ◽  
Author(s):  
M. B. Walker ◽  
W. J. L. Buyers
Keyword(s):  
Magnetic Properties ◽  
Crystal Field ◽  
Field Model

Spin Reorientations in (ErxY1-x)2Fe14B and (ErxPr1-x)2Fe14B Systems

1987 ◽  
Vol 96 ◽  
Author(s):  
E. B. Boltich ◽  
A. T. Pedziwiatr ◽  
W. E. Wallace
Keyword(s):  
Magnetic Properties ◽  
Crystal Field ◽  
Field Model ◽  
Magnetic Behavior ◽  
Theoretical Description ◽  
Adjustable Parameter ◽  
Spin Reorientation ◽  
Exchange Field ◽  
Field Problem ◽  
Curie Temperatures

ABSTRACTThe bulk magnetic properties of (ErxY1-x)2Fe14B and (ErxPr1-x)2Fe14B systems were studied over the temperature range 4.2-1100 K. Lattice parameters, saturation magnetizations, Curie temperatures and spin reorientation temperatures were determined. Theoretical description of the detailed magnetic behavior is presented, based on a crystal field model. The (ErxY1-x)2Fe14B compounds were all found to exhibit plane-to-axis spin reorientations similar to that observed for Er2Fe14B, with the transition temperature decreasing with increasing Y content. In contrast, the spin reorientations in the (ErxPr1-x)2Fe14B systems appear to be of the cone-to-axis type. Since higher order crystal field terms appear to be significant only in the cases of Nd3+ and Ho3+, the results are discussed in terms of a crystal field Hamiltonian involving only 2nd order terms. Using known values of the exchange field, Fe anisotropy and the ratios of the crystal field coefficients, the multi-ion cr 6.tal field problem was formulated in terms of a single adjustable parameter (B02(f). It is shown that 2nd order crystal field terms are capable, not only of explaining the conical anisotropy of the (ErxPr1-x)2Fe14B systems, but also the decrease in the Er moment upon passing through the spin reorientation (as has been observed for Er2Fe14B). The magnetic structure of Er1.5Pr0.5Fe14B is also predicted.

The Ground State in Cs2KFe(CN)6 From Single-Crystal Magnetic Properties

1992 ◽  
Vol 45 (8) ◽  
pp. 1301 ◽  
Author(s):  
PA Reynolds ◽  
CD Delfs ◽  
BN Figgis ◽  
B Moubaraki ◽  
KS Murray
Keyword(s):  
Magnetic Properties ◽  
Single Crystal ◽  
Crystal Field ◽  
Ground State ◽  
Field Model ◽  
Inversion Symmetry ◽  
Variable Parameters ◽  
Magnetic Susceptibilities ◽  
Effective Reduction ◽  
Low Symmetry

The single-crystal magnetic susceptibilities from 4.5 to 300 K, and the magnetizations at 4.5 K from 0.25 to 5 T, of Cs2KFe(CN)6 along a, b and c* are reported. The data are fitted well by a crystal field model with splitting of the ground-state 2T2g term of the hexacyanoferrate (III) ion. The three variable parameters of the model were the two representing the low-symmetry splitting of the t2g orbitals, and the effective reduction in the orbital angular momentum. Four other parameters were fixed at values known or estimated from other experiments on hexacyanoferrate (III) ions, including polarized neutron diffraction which determines the orientation of lower-symmetry crystal field components. The crystal field has only inversion symmetry with respect to the ligand axes, with a non-cubic component which is almost uniaxial with respect to the a,b,c * axis system.

Crystal Field Model of the Magnetic Properties of URu2Si2

1994 ◽  
Vol 73 (7) ◽  
pp. 1027-1030 ◽  
Author(s):  
P. Santini ◽  
G. Amoretti
Keyword(s):  
Magnetic Properties ◽  
Crystal Field ◽  
Field Model

Magnetic properties of complex d 1 and d 5 ions: crystal field model and Jahn–Teller effect

Polyhedron ◽  
2003 ◽  
Vol 22 (14-17) ◽  
pp. 2545-2556 ◽  
Author(s):  
Kim R. Dunbar ◽  
Eric J. Schelter ◽  
Boris S. Tsukerblat ◽  
Sergei M. Ostrovsky ◽  
Vadim Yu. Mirovitsky ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Crystal Field ◽  
Field Model ◽  
Teller Effect ◽  
Jahn Teller ◽  
Jahn Teller Effect

Simulation of f-d transition using the extended crystal-field model: parameter dependent study for Er3+ in various hosts

2010 ◽  
Vol 28 ◽  
pp. 258-261 ◽  
Author(s):  
Changkui DUAN ◽  
You ZHANG ◽  
Chonggeng MA ◽  
Guoya XIE ◽  
Liusen HU
Keyword(s):  
Crystal Field ◽  
Field Model ◽  
Model Parameter ◽  
Parameter Dependent
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