Sökning: (swepub) pers:(Johansson Börje) conttype:(refereed) pers:(Hu Qing Miao)
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Magnetoelastic effe...
Magnetoelastic effects in Ni2Mn1+xGa1-x alloys from first-principles calculations
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- Hu, Qing-Miao (författare)
- KTH,Tillämpad materialfysik
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- Li, Chun-Mei (författare)
- KTH,Tillämpad materialfysik
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- Kulkova, Svetlana E. (författare)
- Institute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Science, Russia
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- Yang, Rui (författare)
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, China
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- Johansson, Börje (författare)
- Uppsala universitet,KTH,Tillämpad materialfysik,Institutionen för fysik och astronomi
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- Vitos, Levente (författare)
- Uppsala universitet,KTH,Tillämpad materialfysik,Institutionen för fysik och astronomi
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(creator_code:org_t)
- 2010
- 2010
- Engelska.
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Ingår i: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 81:6, s. 064108-1-064108-5
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- The magnetic coupling between Mn atoms on Ga sublattice (Mn-Ga) and Mn atoms on Mn sublattice (Mn-Mn) in Ni2Mn1+xGa1-x alloy and its effect on the elastic modulus of the alloy are investigated by the use of first-principles methods. It is shown that, for x = 0.25, the state with antiparallel Mn-Ga-Mn-Mn magnetic coupling is slightly more stable than that with parallel coupling, whereas for x = 0.10, both magnetic states are almost degenerated. For both antiparallel and parallel Mn-Ga-Mn-Mn magnetic couplings, the bulk modulus (B) of Ni2Mn1+xGa1-x deviates from the general e/a-B relationship with e/a being the number of valence electrons per atom. The shear modulus C' versus the martensitic transformation temperature T-M for Ni2Mn1+xGa1-x with antiparallel Mn-Ga-Mn-Mn magnetic coupling is in line with the general C'-T-M relationship for Ni2MnGa-based alloys, in contrast to the case of parallel Mn-Ga-Mn-Mn magnetic coupling.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- shape-memory alloys
- electronic-structure
- martensitic phase
- potential
- model
- heusler alloys
- ni2mnga
- transformation
- approximation
- strain
- Physics
- Fysik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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