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http://hdl.handle.net/2445/10522
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DC Field | Value | Language |
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dc.contributor.author | Marcos, Jordi | cat |
dc.contributor.author | Planes Vila, Antoni | cat |
dc.contributor.author | Mañosa, Lluís | cat |
dc.contributor.author | Labarta, Amílcar | cat |
dc.contributor.author | Hattink, Bart Jan | cat |
dc.date.accessioned | 2009-12-28T07:44:45Z | - |
dc.date.available | 2009-12-28T07:44:45Z | - |
dc.date.issued | 2002 | cat |
dc.identifier.issn | 0163-1829 | cat |
dc.identifier.uri | http://hdl.handle.net/2445/10522 | - |
dc.description.abstract | We have studied the effect of ageing within the miscibility gap on the electric, magnetic, and thermodynamic properties of a nonstoichiometric Heusler Cu-Al-Mn shape-memory alloy, which undergoes a martensitic transition from a bcc-based structure (b phase! towards a close-packed structure (M phase!. Negative magnetoresistance that shows an almost linear dependence on the square of magnetization with different slopes in the M and b phases was observed. This magnetoresistive effect has been associated with the existence of Mn-rich clusters with the Cu2AlMn structure. The effect of an applied magnetic field on the martensitic transition has also been studied. The entropy change between the b and M phases shows negligible dependence on the magnetic field, but it decreases significantly with annealing time within the miscibility gap. Such a decrease is due to the increasing amount of Cu2MnAl-rich domains that do not transform martensitically. | - |
dc.format.extent | 8 p. | cat |
dc.format.mimetype | application/pdf | eng |
dc.language.iso | eng | eng |
dc.publisher | The American Physical Society | eng |
dc.relation.isformatof | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.66.054428 | cat |
dc.relation.ispartof | Physical Review B, 2002, vol. 66, núm. 5, p. 054428-1-054428-8 | eng |
dc.relation.uri | http://dx.doi.org/10.1103/PhysRevB.66.054428 | - |
dc.rights | (c) The American Physical Society, 2002 | eng |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Transformacions martensítiques | cat |
dc.subject.classification | Magnetoresistència | cat |
dc.subject.classification | Aliatges | cat |
dc.subject.other | Martensitic transformations | eng |
dc.subject.other | Magnetoresistance | eng |
dc.subject.other | Alloys | eng |
dc.title | Martensitic transition and magnetoresistance in Cu-Al-Mn shape-memory alloy: Influence of ageing | eng |
dc.type | info:eu-repo/semantics/article | eng |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 504139 | eng |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Física de la Matèria Condensada) |
Files in This Item:
File | Description | Size | Format | |
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504139.pdf | 141.36 kB | Adobe PDF | View/Open |
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