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Author Espinoza Torres, C.; Condó, A.M.; Haberkorn, N.; Zelaya, E.; Schryvers, D.; Guimpel, J.; Lovey, F.C.
  Title Structures in textured Cu-Al-Ni shape memory thin films grown by sputtering Type A1 Journal article
  Year 2014 Publication Materials characterization Abbreviated Journal Mater Charact
  Volume (down) 96 Issue Pages 256-262
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
  Abstract The structure and texture formation in CuAlNi thin films of different thicknesses (1 μm to 5 μm) grown by DC magnetron sputtering without any intentional heating of the substrate are reported. The as-grown films present grains with an average size of 20 nm. The films with thickness of 1 μm have a single metastable phase with a hexagonal structure and are textured with planes (0002) parallel to the plane of the films. It was observed that thicker films present phase coexistence between metastable hexagonal and body centered cubic structures with a gradual increment of the body centered cubic phase fraction. The films with thickness of 5 μm are textured with planes (0002) and View the MathML source101¯0 in the hexagonal structure, whereas in the body centered cubic structure the films are textured with {110} planes parallel to the plane of the films. This fact can be associated with self-heating of the substrate during the growth of the films and with the relative stability of the metastable phases. Free standing films annealed in a second step (1123 K for 1 h) present austenitic phase with L21 structure and sub-micrometric grains textured with {220}L21 planes parallel to the plane of the films. The martensitic transformation temperature was determined from the analysis of resistance against temperature measurements.
  Address
  Corporate Author Thesis
  Publisher Place of Publication New York Editor
  Language Wos 000343346400032 Publication Date 2014-08-10
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 1044-5803; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 2.714 Times cited 9 Open Access
  Notes (CONICET PIP 11220090100457) and MINCYT-FWO International Exchange Project FW/09/03 is also acknowledged Approved Most recent IF: 2.714; 2014 IF: 1.845
  Call Number UA @ lucian @ c:irua:118931 Serial 3321
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