This title appears in the Scientific Report :
2009
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevB.80.174424 in citations.
Please use the identifier: http://hdl.handle.net/2128/11006 in citations.
Magnetic structure of EuFe2As2 determined by single-crystal neutron diffraction
Magnetic structure of EuFe2As2 determined by single-crystal neutron diffraction
Among various parent compounds of iron pnictide superconductors, EuFe2As2 stands out due to the presence of both spin density wave of Fe and antiferromagnetic (AFM) ordering of the localized Eu2+ moment. Single-crystal neutron-diffraction studies have been carried out to determine the magnetic struc...
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Personal Name(s): | Xiao, Y. |
---|---|
Su, Y. / Meven, M. / Mittal, R. / Kumar, C. M. N. / Chatterji, T. / Price, S. / Persson, J. / Kumar, C. M. N. / Dhar, S.K. / Thamizhavel, A. / Brückel, T. | |
Contributing Institute: |
JARA-FIT; JARA-FIT JCNS; JCNS Neutronenstreuung; IFF-5 Streumethoden; IFF-4 |
Published in: | Physical Review B Physical review / B, 80 80 (2009 2009) 17 17, S. 174424 174424 |
Imprint: |
College Park, Md.
APS
2009
|
Physical Description: |
174424 |
DOI: |
10.1103/PhysRevB.80.174424 |
Document Type: |
Journal Article |
Research Program: |
Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI) Kondensierte Materie |
Series Title: |
Physical Review B
80 |
Subject (ZB): | |
Link: |
Get full text OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/11006 in citations.
Among various parent compounds of iron pnictide superconductors, EuFe2As2 stands out due to the presence of both spin density wave of Fe and antiferromagnetic (AFM) ordering of the localized Eu2+ moment. Single-crystal neutron-diffraction studies have been carried out to determine the magnetic structure of this compound and to investigate the coupling of two magnetic sublattices. Long-range AFM ordering of Fe and Eu spins was observed below 190 and 19 K, respectively. The ordering of Fe2+ moments is associated with the wave vector k=(1,0,1) and it takes place at the same temperature as the tetragonal to orthorhombic structural phase transition, which indicates the strong coupling between structural and magnetic components. The ordering of the Eu moments is associated with the wave vector k=(0,0,1). While both Fe and Eu spins are aligned along the long a axis as experimentally determined, our studies suggest a weak coupling between the Fe and Eu magnetism. |