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Fabrication of patterned ferromagnetic shape memory thin films

  • P. Álvarez-Alonso
  • , A. Pérez-Checa
  • , I. R. Aseguinolaza
  • , J. Alonso
  • , A. V. Svalov
  • , V. A. Chernenko
  • , J. M. Barandiarán
  • University of South Florida

Producción científica: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

2 Citas (Scopus)

Resumen

We report two possible routes of fabrication of large surfaces of ferromagnetic shape memory antidots with tunable pore size and center-to-center distances. By using the drop coating method, we have prepared a large area of 2D arrays (typically 1cm2) of polystyrene spheres (PS) (1.4±0.1μ m diameter) on a Si substrate. We have used reactive ion etching with a gas mixture of O2 (12sccm) and Ar (5sccm) to reduce the diameter of the PS spheres whereby controlling the size of pores. The film deposition was performed on a substrate heated at 500°C (route 1) and at room temperature with subsequent annealing in a furnace at 500°C for 4 hours (route 2). Route 1 proved to be promising but more work is needed to optimize it. The antidots of Ni-Mn-Ga obtained along route 2 are ferromagnetic with a Curie temperature ~100°C, and a spread martensitic transformation (between -100°C and -30°C).

Idioma originalInglés
Título de la publicación alojadaProceedings of the 4th International Conference on Materials and Applications for Sensors and Transducers
EditoresJon Gutierez, José Manuel Barandiaran, Evangelos Hristoforou, Dimitrios Vlachos
EditorialTrans Tech Publications Ltd
Páginas219-222
Número de páginas4
ISBN (versión digital)9783038354413
DOI
EstadoPublicada - 2015
Publicado de forma externa
Evento4th International Conference on Materials and Applications for Sensors and Transducers, MAST 2014 - Bilbao, Espana
Duración: 8 jun 201411 jun 2014

Serie de la publicación

NombreKey Engineering Materials
Volumen644
ISSN (versión impresa)1013-9826
ISSN (versión digital)1662-9795

Conferencia

Conferencia4th International Conference on Materials and Applications for Sensors and Transducers, MAST 2014
País/TerritorioEspana
CiudadBilbao
Período8/06/1411/06/14

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