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On the rich magneti...
On the rich magnetic phase diagram of (Ni, Co)-Mn-Sn Heusler alloys
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- Gruenebohm, A. (författare)
- Univ Duisburg Essen, Fac Phys, D-47048 Duisburg, Germany.;Univ Duisburg Essen, CENIDE, D-47048 Duisburg, Germany.
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- Herper, Heike C. (författare)
- Uppsala universitet,Materialteori
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- Entel, P. (författare)
- Univ Duisburg Essen, Fac Phys, D-47048 Duisburg, Germany.;Univ Duisburg Essen, CENIDE, D-47048 Duisburg, Germany.
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Univ Duisburg Essen, Fac Phys, D-47048 Duisburg, Germany;Univ Duisburg Essen, CENIDE, D-47048 Duisburg, Germany. Materialteori (creator_code:org_t)
- 2016-09-06
- 2016
- Engelska.
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Ingår i: Journal of Physics D. - : IOP Publishing. - 0022-3727 .- 1361-6463. ; 49:39
- Relaterad länk:
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http://arxiv.org/pdf...
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visa fler...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We put a spotlight on the exceptional magnetic properties of the metamagnetic Heusler alloy (Ni, Co)-Mn-Sn by means of first principles simulations. In the energy landscape we find a multitude of local minima, which belong to different ferrimagnetic states and are close in total magnetization and energy. All these magnetic states correspond to the local high spin state of the Mn atoms with different spin alignments and are related to the magnetic properties of Mn. Compared to pure Mn, the magneto-volume coupling is reduced by Ni, Co and Sn atoms in the lattice and no local low-spin Mn states appear. For the cubic phase we find a ferromagnetic ground state whereas the global energy minimum is a tetragonal state with a complicated spin structure and vanishing magnetization which so far has been overlooked in simulations.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Ni-Mn-Sn
- metamagnetism in Heusler alloys
- metamagnetis magnetocaloric effect
- magneto-structural transition
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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