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Mössbauer spectroscopy and magnetic measurements on Fe-Ni-Co-Ti shape memory alloys

F. TOLEA1,* , G. SCHINTEIE1, B. POPESCU1

Affiliation

  1. National Institute for Physics of Materials, P.O. Box MG 7, 77125, Bucharest-Magurele, Romania

Abstract

Fe-Ni-Co-Ti shape memory alloys were prepared by various techniques. A comparison between samples prepared by classical metallurgy and by melt spinning technique is performed in respect to the microscopic mechanisms responding for the shape memory effects. X-ray diffraction, thermomagnetic measurements and Mössbauer spectroscopy were applied for a complete structural and magnetic characterization. Only samples supporting an aging treatment gave evidence for shape memory effects and correlated structural transformations..

Keywords

Ferromagnetic shape memory alloys, Mössbauer Spectroscopy, XRD, Magnetometry.

Submitted at: June 29, 2006
Accepted at: July 20, 2006

Citation

F. TOLEA, G. SCHINTEIE, B. POPESCU, Mössbauer spectroscopy and magnetic measurements on Fe-Ni-Co-Ti shape memory alloys, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 4, pp. 1502-1506 (2006)