Influence of Cr doping on the magnetic structure of the FeAs-strips compound CaFe4As3

A single-crystal neutron diffraction study

P. Manuel, L. C. Chapon, G. Trimarchi, I. S. Todorov, D. Y. Chung, B. Ouladdiaf, M. J. Gutmann, Arthur J Freeman, Mercouri G Kanatzidis

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We have studied the magnetic structure of a Cr-doped iron-arsenide compound CaFe4As3 by means of single crystal neutron diffraction. The neutron data reveal that below 90 K, an antiferromagnetic structure with propagation vector k=0 is adopted. Refinement of the magnetic structure using one of the modes allowed by symmetry analysis indicates that two of the four Fe sites, including the one where the selective substitution Fe/Cr happens, bear reduced magnetic moments. Density functional theory calculations confirm the stability of such a magnetic arrangement.

Original languageEnglish
Article number104414
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume88
Issue number10
DOIs
Publication statusPublished - Sep 17 2013

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Magnetic structure
Neutron diffraction
bears
neutron diffraction
strip
magnetic moments
Doping (additives)
Single crystals
substitutes
density functional theory
iron
neutrons
propagation
single crystals
symmetry
Magnetic moments
Density functional theory
Neutrons
Substitution reactions
Iron

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Influence of Cr doping on the magnetic structure of the FeAs-strips compound CaFe4As3 : A single-crystal neutron diffraction study. / Manuel, P.; Chapon, L. C.; Trimarchi, G.; Todorov, I. S.; Chung, D. Y.; Ouladdiaf, B.; Gutmann, M. J.; Freeman, Arthur J; Kanatzidis, Mercouri G.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 88, No. 10, 104414, 17.09.2013.

Research output: Contribution to journalArticle

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