This title appears in the Scientific Report :
2008
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevB.78.100506 in citations.
Please use the identifier: http://hdl.handle.net/2128/10795 in citations.
Lattice and magnetic instabilities in CaFe2As2: A single crystal neutron diffraction study
Lattice and magnetic instabilities in CaFe2As2: A single crystal neutron diffraction study
Neutron diffraction measurements of a high-quality single crystal of CaFe2As2 are reported. A sharp transition was observed between the high-temperature tetragonal and low-temperature orthorhombic structures at T-S=172.5 K (on cooling) and 173.5 K (on warming). Concomitant with the structural transi...
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Personal Name(s): | Goldman, A. I. |
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Argyriou, D. N. / Ouladdiaf, B. / Chatterji, T. / Kreyssig, A. / Nandi, S. / Ni, N. / Bud'ko, S. L. / Canfield, P. C. / McQueeney, R. J. | |
Contributing Institute: |
JARA-FIT; JARA-FIT JCNS; JCNS Neutronenstreuung; IFF-5 Streumethoden; IFF-4 |
Published in: | Physical Review B Physical review / B, 78 78 (2008 2008) 10 10, S. 100506 100506 |
Imprint: |
College Park, Md.
APS
2008
|
Physical Description: |
100506 |
DOI: |
10.1103/PhysRevB.78.100506 |
Document Type: |
Journal Article |
Research Program: |
Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI) Kondensierte Materie |
Series Title: |
Physical Review B
78 |
Subject (ZB): | |
Link: |
Get full text OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/10795 in citations.
Neutron diffraction measurements of a high-quality single crystal of CaFe2As2 are reported. A sharp transition was observed between the high-temperature tetragonal and low-temperature orthorhombic structures at T-S=172.5 K (on cooling) and 173.5 K (on warming). Concomitant with the structural transition, the Fe moments order in a commensurate antiferromagnetic structure with a saturated moment of 0.80(5)mu(B)/Fe directed along the orthorhombic a axis. The hysteresis of both the structural and magnetic transitions is 1 K between cooling and warming, consistent with previous thermodynamic, transport, and single-crystal x-ray studies and provides clear evidence of the coupling between the structural and magnetic transitions in this material. |