Ligand field theory and f orbitals in magnetism

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SUMMARY

This discussion focuses on ligand field theory and the role of f orbitals in the magnetic properties of elements and alloys. It clarifies that f orbitals are compact inner shell orbitals, contrary to the notion that they hybridize in unusual ways due to their size. The conversation highlights the importance of crystal field theory (CFT) in understanding the anisotropy of f orbitals and recommends Housecroft's "Inorganic Chemistry" (2nd edition) for further reading on this topic, particularly Chapter 24 dedicated to the f-block elements.

PREREQUISITES
  • Understanding of ligand field theory (LFT)
  • Familiarity with crystal field theory (CFT)
  • Knowledge of f orbitals and their properties
  • Basic concepts of magnetic properties in materials
NEXT STEPS
  • Study Housecroft's "Inorganic Chemistry" (2nd edition), Chapter 24 for in-depth knowledge on f-block elements
  • Research the implications of crystal field theory on magnetic anisotropy
  • Explore the relationship between Fermi energy and magnetism
  • Investigate experimental techniques for analyzing absorption and emission spectra of lanthanide compounds
USEFUL FOR

Chemistry students, materials scientists, and researchers interested in the magnetic properties of f-block elements and the applications of ligand field theory.

letshin
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I've been introduced to ligand-field theory lately and was then wondering what roles f orbitals play in the magnetic properties of elements and alloys. Apparently f orbitals behave oddly in that they hybridize in weird ways because they're so large and that the crystal field actually affects the anisotropy of the f orbitals.

Are there any resources that I can use to read up on this? Or would a Fermi energy approach be better for a study on magnetism?

Thanks,
L
 
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letshin said:
Apparently f orbitals behave oddly in that they hybridize in weird ways because they're so large.

That's not quite true (maybe leaving aside actinides). f orbitals are inner shell orbitals and are quite compact and well screened from external fields. This can be inferred also experimentally from the very sharp absorption and emission spectra of lanthanide compounds.
I would also avoid speaking of hybridization (which is valence bond language) in the context of ligand field theory (which is rather a variant of molecular orbital theory).
I fear I can't help you with literature recommendations.
 
letshin said:
I've been introduced to ligand-field theory lately and was then wondering what roles f orbitals play in the magnetic properties of elements and alloys. Apparently f orbitals behave oddly in that they hybridize in weird ways because they're so large and that the crystal field actually affects the anisotropy of the f orbitals.

Are there any resources that I can use to read up on this? Or would a Fermi energy approach be better for a study on magnetism?

Thanks,
L

If you're looking for information on CFT and f orbitals, check out Housecroft's Inorganic Chemistry (specifically the 2nd edition). Chapter 24 is entirely dedicated to the f-block.
 

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