Magnetic properties of trigonally distorted octahedral iron(II) complexes

Gerloch, M.; Lewis, J.; Phillips, G. G.; Quested, P N

doi:10.1039/j19700001941

Cited by 28 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A 80 shows the effective magnetic moment of 5.5 m B , while in Fe(H 2 O) 6 SiF 6 , where FeO 6 octahedra are trigonally distorted, m eff ¼ 5.2 m B . 81 This also demonstrates that the orbital contribution is sensitive to the deviation from the octahedral symmetry. The FeO 6 octahedra in LiFePO 4 are significantly distorted with axial bonds of 2.204 and 2.108 A and two of each equatorial bond of 2.251and 2.064…”

Section: Magnetic Structures and Fe 2+ Magnetic Momentmentioning

confidence: 80%

What can we learn about battery materials from their magnetic properties?

et al. 2011

View full text Add to dashboard Cite

Section: Magnetic Structures and Fe 2+ Magnetic Momentmentioning

confidence: 80%

What can we learn about battery materials from their magnetic properties?

et al. 2011

View full text Add to dashboard Cite

“…It is not clear to us which of the E g or A 1g levels become the ground state, and how large the splitting between the two levels is. These questions cannot be answered readily without a knowledge of the magnitudes of certain radial integrals, 59 and are not further discussed here. 60 However, this trigonal splitting is typically about an order of magnitude smaller than 10Dq.…”

Section: Crystal Field Modelmentioning

confidence: 99%

Synthesis, characterization, and magnetic susceptibility of the heavy-fermion transition-metal oxideLiV2O4

1999

View full text Add to dashboard Cite

The preparative method, characterization, and magnetic susceptibility measurements versus temperature T of the heavy-fermion transition-metal oxide LiV 2 O 4 are reported in detail. The intrinsic (T) shows a nearly T-independent behavior below ϳ30 K with a shallow broad maximum at Ϸ16 K, whereas Curie-Weiss-like behavior is observed above ϳ50-100 K. Field-cooled and zero-field-cooled magnetization M obs measurements in applied magnetic fields Hϭ10Ϫ100 G from 1.8 to 50 K showed no evidence for spin-glass ordering. Crystalline electric field theory for an assumed cubic V point group symmetry is found insufficient to describe the observed temperature variation of the effective magnetic moment. The Kondo and Coqblin-Schrieffer models do not describe the magnitude and T dependence of with realistic parameters. In the high-T range, fits of (T) by the predictions of high-temperature series expansion calculations provide estimates of the V-V antiferromagnetic exchange coupling constant J/k B ϳ20 K, g factor gϳ2, and the T-independent susceptibility. Other possible models to describe the (T) are discussed. The paramagnetic impurities in the samples were characterized using isothermal M obs (H) measurements with 0ϽHр5.5 T at 2-6 K. These impurities are inferred to have spin S imp ϳ3/2-4, g imp ϳ2, and molar concentrations of 0.01-0.8 %, depending on the sample.

show abstract

“…These questions cannot be answered readily without a knowledge of the magnitudes of certain radial integrals [136]. and are not further discussed here [137].…”

Section: Crystal Field Modelmentioning

confidence: 99%