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  Uniaxial-stress tuned large magnetic-shape-memory effect in Ni-Co-Mn-Sb Heusler alloys

Salazar Mejía, C., Küchler, R., Nayak, A. K., Felser, C., & Nicklas, M. (2017). Uniaxial-stress tuned large magnetic-shape-memory effect in Ni-Co-Mn-Sb Heusler alloys. Applied Physics Letters, 110(7): 071901, pp. 1-5. doi:10.1063/1.4976212.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-F77D-E Version Permalink: http://hdl.handle.net/21.11116/0000-0000-FD36-7
Genre: Journal Article

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 Creators:
Salazar Mejía, C.1, Author              
Küchler, R.2, Author              
Nayak, A. K.3, Author              
Felser, C.4, Author              
Nicklas, M.5, Author              
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Ajaya Nayak, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863426              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              
5Michael Nicklas, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863472              

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 Abstract: Combined strain and magnetization measurements on the Heusler shape-memory alloys Ni45Co5Mn38Sb12 and Ni44Co6Mn38Sb12 give evidence for strong magneto-structural coupling. The sample length changes up to 1% at the martensitic transformation, between a ferromagnetic, austenitic phase at high temperatures and a weakly magnetic, low-symmetry martensitic phase at lower temperatures. Under moderate uniaxial stress, the change in the sample length increases to and saturates at about 3%, pointing to stabilization of a single martensitic variant. A reverse martensitic transformation can also be induced by applying magnetic field: we find that within the temperature range of thermal hysteresis of the martensitic transformation, applying a field can induce a metastable expansion of the sample, while at slightly lower temperatures, the field response is reversible. These findings provide key information for future use of Ni(Co)-Mn-Sb-based Heusler compounds in, e.g., actuators and mechanical switches. Published by AIP Publishing.

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Language(s): eng - English
 Dates: 2017-02-142017-02-14
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000394761700014
DOI: 10.1063/1.4976212
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Title: Applied Physics Letters
  Abbreviation : Appl. Phys. Lett.
Source Genre: Journal
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Publ. Info: Melville, NY : American Institute of Physics
Pages: - Volume / Issue: 110 (7) Sequence Number: 071901 Start / End Page: 1 - 5 Identifier: Other: 0003-6951
CoNE: https://pure.mpg.de/cone/journals/resource/954922836223