Ion-beam mixing and phase formation in the immiscible FeMg system

Jaouen, C.; Delafond, J.; Junqua, N.; Goudeau, Ph.

doi:10.1016/0168-583x(89)90076-1

Cited by 7 publications

(2 citation statements)

References 25 publications

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“…The present results show in detail a range of fluences that had been overlooked in previous experiments on the same system [6]. Unlike the behaviour found in most immiscible systems, where either no mixing at all [17][18][19] or mixing due to collisional processes [6,9,[20][21][22][23] are observed, our results (figure 2) show the two processes already mentioned. We observe that both de-mixing and mixing are temperature dependent.…”

Section: Discussionsupporting

confidence: 61%

Argon ion-irradiation effects at the interface of Cu/Fe bilayers

Desimoni

Echeverría

Punte

et al. 2000

J. Phys.: Condens. Matter

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Cu/Fe layers produced by molecular beam epitaxy were subjected to 360 keV Ar + irradiation at 180 K and 295 K over a range of ion fluences from 2.0 ×10 15 to 5.0 ×10 16 ions cm −2 . Rutherford backscattering spectrometry and x-ray diffraction were used to monitor the evolution of the interfaces after each step of irradiation. Up to fluences of approximately 5 × 10 15 Ar + cm −2 , at both substrate temperatures, a moderate decrease of the initial Cu edge variance was observed. At higher fluences an inter-diffusion of the layers was noticed. The results are interpreted as being caused by stress effects and plastic deformation.

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Section: Discussionsupporting

confidence: 61%

Argon ion-irradiation effects at the interface of Cu/Fe bilayers

Desimoni

Echeverría

Punte

et al. 2000

J. Phys.: Condens. Matter

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“…Previous results showed that below 1273 K, Mg does not dissolve in Fe, while at the liquidus temperature, the maximum solubility of Mg in δ-Fe only reaches 0.25 atomic percent (at.%) [2]. Some attempts have been made to facilitate Fe-Mg inter-alloying using ion-beam mixing [3] or mechanical alloying [4]. Besides, several studies shave shown that high pressures can improve the Fe-Mg inter-solubility.…”

Section: Introductionmentioning

confidence: 99%

Unconventional iron-magnesium compounds at terapascal pressures

Fang,

Sun,

Wang

et al. 2021

Preprint

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Being a lithophile element at ambient pressure, magnesium is long believed to be immiscible with iron. A recent study by Gao et al. [1] showed that pressure turns magnesium into a siderophile element and can produce unconventional Fe-Mg compounds. Here, we extend the investigation to exoplanetary pressure conditions using an adaptive genetic algorithm-based variable-composition structural prediction approach. We identify several Fe-Mg phases up to 3 TPa. Our cluster alignment analysis reveals that most of the predicted Fe-Mg compounds prefer a BCC packing motif at terapascal pressures. This study provides a more comprehensive structure database to support future investigations of the high-pressure structural behavior of Fe-Mg and ternary, quaternary, etc. compounds involving these elements.

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Phase formation in ion-mixed alloys

Ossi¹

1991

Thin Solid Films

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Ion-beam mixing and phase formation in the immiscible FeMg system

Cited by 7 publications

References 25 publications

Argon ion-irradiation effects at the interface of Cu/Fe bilayers

Argon ion-irradiation effects at the interface of Cu/Fe bilayers

Unconventional iron-magnesium compounds at terapascal pressures

Phase formation in ion-mixed alloys

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