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The BCC to FCC/HCP phase transformation of the Co70Fe30 alloy produced by ion irradiation of Co70Fe30/Cu discontinuous multilayers |
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| Authors: | I L Graff W H Flores M C M Alves L Amaral S R Teixeira |
| Institution: | a Instituto de Física, Universidade Federal do Rio Grande—UFRGS, C.P. 15051, 91501-970, Porto Alegre, Brazil b LNLS—Laboratório Nacional de Luz Síncrotron, C.P. 6192, 13081-970, Campinas, Brazil |
| Abstract: | We report on the BCC to FCC/HCP structural transformation of Co70Fe30 alloy produced by room temperature ion irradiation of Co70Fe30/Cu discontinuous multilayers. The structural changes were analyzed by X-ray diffraction and X-ray absorption spectroscopy. For this study, two different samples were examined, one irradiated with 50 keV He+ and another with 600 keV Kr+ with doses of 1×1017 and 3×1015 ions/cm2, respectively. No substantial change is observed after He+ irradiation, while after Kr+ irradiation an unexpected structural transition from BCC to FCC/HCP closed packed of the Co70Fe30 alloy was found. |
| Keywords: | Metallic multilayers Ion irradiation X-ray absorption |
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