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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Gościańska, Iwona
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Topics
Publications (3/3 displayed)
- 2012Magnetoresistance and its relation to magnetization in Ni <inf>50</inf>Mn <inf>35</inf>Sn <inf>15</inf> shape-memory epitaxial filmscitations
- 2012Exchange bias in Ni-Mn-Sn heusler alloy filmscitations
- 2011Magnetostructural transformations in Ni <inf>51</inf> Mn <inf>36</inf> Sn <inf>13</inf> Heusler alloy thin filmscitations
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article
Exchange bias in Ni-Mn-Sn heusler alloy films
Abstract
<p>We report a relatively large exchange bias effect observed for the first time in Ni-Mn-Sn thin films with different microstructure and composition: a Ni <sub>50</sub>Mn <sub>36</sub>Sn <sub>14</sub> epitaxial film (A), a Ni <sub>50</sub>Mn <sub>43</sub>Sn <sub>7</sub> film which is phase decomposed (B), and a NiMn/Ni <sub>50</sub>Mn <sub>25</sub>Sn <sub>25</sub> bilayer (C). Despite the samples differ markedly in both microstructure and composition H <sub>EB</sub> does not substantially differs at 5 K. Exchange bias decreases with increasing T approximately as H <sub>EB</sub>(T) α H <sub>EB</sub>(5 K)=T with H <sub>EB</sub>(5 K) of 180 Oe and 60 Oe for sample B and C, respectively and almost linearly for sample A with H <sub>EB</sub>(5 K) = 65 Oe. Blocking temperature where the exchange bias vanishes is 40, 50 and 80 K for sample A, C and B, respectively. The results suggest that the role of AFM/FM interfaces is not substantial in formation of exchange bias in Ni-Mn-Sn Heusler alloy flms and exchange bias is rather related to AFM/FM interactions in nanoscale.</p>