Abstract
High pressure 57Fe Mössbauer spectroscopy measurements (up to ~41 GPa at room temperature) have been carried out for investigating the magnetic properties of γ (fcc) 57Fe53Ni47 alloy using diamond anvil cell (DAC) technique. The Mössbauer spectrum at 0 GPa shows a six line magnetic pattern with broad outer peaks and an average hyperfine field of ~31 T characteristic of a disordered alloy. In the pressure range (2 < P < 20 GPa) we observe Mössbauer spectra with additional low hyperfine field component resembling spectra of γ (fcc) Fe—Ni Invar alloys (30–40 at % Ni). Our data indicate a pressure induced Invar effect for 57Fe53Ni47 alloy at ~7–12 GPa. Above 20 GPa the hyperfine field breaks down and the alloy becomes non-magnetic showing only a single line Mössbauer spectrum.
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© 2004 Springer Science+Business Media Dordrecht
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Abdu, Y.A., Annersten, H., Dubrovinsky, L.S., Dubrovinskaia, N.A. (2004). High Pressure Mössbauer Studies on FCC Fe53Ni47 Alloy. In: Elzain, M.E., Yousif, A.A., al Rawas, A.D., Gismelseed, A.M. (eds) ICAME 2003. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-2852-6_59
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DOI: https://doi.org/10.1007/978-1-4020-2852-6_59
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