2024-03-29T00:27:12Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1027622016-10-20T09:28:51Zcom_10261_115com_10261_3col_10261_368
Polymorphic MnAs nanowires of a magnetic shape memory alloy
Echeverría-Arrondo, C.
Pérez-Conde, J.
Ayuela, Andrés
Eusko Jaurlaritza
Ministerio de Ciencia y Tecnología (España)
Universidad del País Vasco
We describe a magnetic shape memory alloy, in which it is the nanostructural confinement that influences both the crystal geometry and the electronic and magnetic properties. We use calculations from first-principles on shape memory MnAs nanowires to study the influence of strain on the resulting crystallographic phases, which arise at their surfaces. We show that MnAs nanowires as thin as two nanometers can be stable in a new crystal geometry which is induced by one-dimensionality and hence is unknown in the bulk, typically hexagonal. The changes between phases caused by differences in strain require the existence of twin domains. Our analysis suggests that the strain-induced structural transition-which is here described for MnAs compounds-could be applied to other (magnetic) shape memory nanowire systems for applications in a range of devices from mechanical to magneto-electronic. © 2014 the Owner Societies.
This study was supported by funding from the Basque Government through the Nanomaterials project (Grant No. IE05-151) under the ETORTEK Program (iNanogune), the Spanish Ministerio de Ciencia y Tecnologia of Spain (Grant No. FIS 2010-19609-C02-02), and the University of the Basque Country (Grant No. IT-366-07).
Peer Reviewed
2014-10-01T09:44:07Z
2014-10-01T09:44:07Z
2014
2014-10-01T09:44:07Z
artículo
http://purl.org/coar/resource_type/c_6501
doi: 10.1039/C3CP55363A
issn: 1463-9076
e-issn: 1463-9084
Physical Chemistry Chemical Physics 16(12): 5649-5654 (2014)
http://hdl.handle.net/10261/102762
10.1039/C3CP55363A
http://dx.doi.org/10.13039/501100006280
http://dx.doi.org/10.13039/501100003086
none
Royal Society of Chemistry (UK)