This title appears in the Scientific Report :
2017
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevB.96.104407 in citations.
Please use the identifier: http://hdl.handle.net/2128/15253 in citations.
Spin dynamics of the magnetocaloric compound MnFe$_{4}$ Si$_{3}$
Spin dynamics of the magnetocaloric compound MnFe$_{4}$ Si$_{3}$
The magnetic excitation spectrum of the magnetocaloric compound MnFe4Si3 has been investigated by means of polarized and unpolarized inelastic neutron scattering on single crystals. Spectra were collected in the ferromagnetic phase (TC≈305K), as well as in the paramagnetic state, in order to underst...
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Personal Name(s): | Biniskos, N. |
---|---|
Raymond, S. / Schmalzl, K. / Schneidewind, A. / Voigt, J. / Georgii, R. / Hering, P. / Persson, J. / Friese, K. / Brückel, T. | |
Contributing Institute: |
Streumethoden; JCNS-2 JCNS-FRM-II; JCNS-FRM-II JCNS-ILL; JCNS-ILL JARA-FIT; JARA-FIT Streumethoden; PGI-4 |
Published in: | Physical Review B Physical review / B, 96 96 (2017 2017) 10 10, S. 104407 104407 |
Imprint: |
Woodbury, NY
Inst.
2017
|
DOI: |
10.1103/PhysRevB.96.104407 |
Document Type: |
Journal Article |
Research Program: |
Jülich Centre for Neutron Research (JCNS) Materials and Processes for Energy and Transport Technologies Quantum Condensed Matter: Magnetism, Superconductivity Controlling Collective States Controlling Collective States |
Subject (ZB): | |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/15253 in citations.
The magnetic excitation spectrum of the magnetocaloric compound MnFe4Si3 has been investigated by means of polarized and unpolarized inelastic neutron scattering on single crystals. Spectra were collected in the ferromagnetic phase (TC≈305K), as well as in the paramagnetic state, in order to understand the nature of the magnetism in MnFe4Si3. Spin-wave measurements at 1.5 K reveal a strong anisotropy of the magnetic exchange interactions along the (h00) and (00l) reciprocal directions of the hexagonal system, which also manifests itself in the q-dependent linewidths in the paramagnetic state. The correlation lengths indicate a short-range order, while the average linewidth is of the order of kBTC pointing to a behavior typical of many ferromagnets. In addition, the in- and out-of-plane spin fluctuations are found to be isotropic around TC and can be suppressed by a magnetic field of 2 T. |