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Large Orbital Moments and Internal Magnetic Fields in Lithium Nitridoferrate(I)

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons126690

Klatyk,  J.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons126838

Schnelle,  W.
Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons126896

Wagner,  F. R.
Frank Wagner, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons126783

Niewa,  R.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons126692

Kniep,  R.
Rüdiger Kniep, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Zitation

Klatyk, J., Schnelle, W., Wagner, F. R., Niewa, R., Novak, P., Kniep, R., et al. (2002). Large Orbital Moments and Internal Magnetic Fields in Lithium Nitridoferrate(I). Physical Review Letters, 88(20): 207202, pp. 207202-207202. doi:10.1103/PhysRevLett.88.207202.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0015-314F-7
Zusammenfassung
The iron nitridometalates Li-2[ (Li1-x Fe (I)(x))N] display ferromagnetic ordering and spin freezing. Large magnetic moments up to 5.0mu(B)/Fe are found in the magnetization. In Mossbauer effect studies huge hyperfine magnetic fields up to 696 kOe are observed at specific Fe sites. These extraordinary fields and moments originate in an unusual ligand field splitting for those Fe species leading [within local spin density approximation (LSDA)] to a localized orbitally degenerate doublet. Including spin-orbit interaction and strong intra-atomic electron correlation (LDA+SO+U) gives rise to a large orbital momentum.