This title appears in the Scientific Report :
2010
Please use the identifier:
http://hdl.handle.net/2128/10986 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevB.81.220406 in citations.
Field-induced spin reorientation and giant spin-lattice coupling in EuFe2As2
Field-induced spin reorientation and giant spin-lattice coupling in EuFe2As2
We have studied a EuFe2As2 single crystal by neutron diffraction under magnetic fields up to 3.5 T and temperatures down to 2 K. A field-induced spin reorientation is observed in the presence of a magnetic field along both the a and c axes, respectively. Above critical field, the ground-state antife...
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Personal Name(s): | Xiao, Y. |
---|---|
Su, Y. / Schmidt, W. / Schmalzl, K. / Kumar, C. M. N. / Price, S. / Chatterji, T. / Mittal, R. / Chang, L. J. / Nandi, S. / Kumar, C. M. N. / Dhar, S. K. / Thamizhavel, A. / Brückel, T. | |
Contributing Institute: |
JCNS; JCNS JARA-FIT; JARA-FIT Neutronenstreuung; IFF-5 Streumethoden; IFF-4 |
Published in: | Physical Review B Physical review / B, 81 81 (2010 2010) 22 22, S. 220406 220406 |
Imprint: |
College Park, Md.
APS
2010
|
Physical Description: |
220406 |
DOI: |
10.1103/PhysRevB.81.220406 |
Document Type: |
Journal Article |
Research Program: |
Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI) BioSoft: Makromolekulare Systeme und biologische Informationsverarbeitung |
Series Title: |
Physical Review B
81 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevB.81.220406 in citations.
We have studied a EuFe2As2 single crystal by neutron diffraction under magnetic fields up to 3.5 T and temperatures down to 2 K. A field-induced spin reorientation is observed in the presence of a magnetic field along both the a and c axes, respectively. Above critical field, the ground-state antiferromagnetic configuration of Eu2+ moments transforms into a ferromagnetic structure with moments along the applied field direction. The magnetic phase diagram for Eu magnetic sublattice in EuFe2As2 is presented. A considerable strain (similar to 0.9%) is induced by the magnetic field caused by the realignment of the twinning structure. Furthermore, the realignment of the twinning structure is found to be reversible with the rebound of magnetic field, which suggested the existence of magnetic shape-memory effect. The Eu moment ordering exhibits close relationship with the twinning structure. We argue that the Zeeman energy in combined with magnetic anisotropy energy is responsible for the observed spin-lattice coupling. |