Intercalation synthesis of graphene-capped iron silicide atop Ni(111): Evolution of electronic structure and ferromagnetic ordering

G. S. Grebenyuk, O. Yu Vilkov, A. G. Rybkin, M. V. Gomoyunova, B. V. Senkovskiy, D. Yu Usachov, D. V. Vyalikh, S. L. Molodtsov, I. I. Pronin

Результат исследований: Научные публикации в периодических изданияхстатья

13 Цитирования (Scopus)

Выдержка

A new method for synthesis of graphene-protected iron silicides has been tested, which consists in formation of graphene on Ni(111) followed by two-step intercalation of the system with Fe and Si. Characterization of the samples was performed in situ by low-energy electron diffraction, angular-resolved photoelectron spectroscopy, core-level photoelectron spectroscopy with synchrotron radiation and magnetic linear dichroism in photoemission of Fe 3p electrons. It is shown, that at 400 °C the intercalation of graphene/Ni(111) with iron occurs in a range up to 14 ML. The graphene layer strongly interacts with the topmost Fe atoms and stabilizes the fcc structure of the film. The in-plane ferromagnetic ordering of the film has a threshold nature and arises after the intercalation of 5 ML Fe due to the thickness-driven spin reorientation transition. Subsequent intercalation of graphene/Fe/Ni(111) with Si leads to the formation of the inhomogeneous system consisted of intercalated and nonintercalated areas. The intercalated islands coalesce at 2 ML Si when a Fe-Si solid solution covered with the Fe3Si surface silicide is formed. The Fe3Si silicide is ferromagnetic and has an ordered (√3 × √3)R30° structure. The graphene layer is weakly electronically coupled to the silicide phase keeping its remarkable properties ready for use.

Язык оригиналаанглийский
Страницы (с-по)715-722
Число страниц8
ЖурналApplied Surface Science
Том392
DOI
СостояниеОпубликовано - 15 янв 2017

Отпечаток

Graphite
Intercalation
Graphene
Electronic structure
Iron
Photoelectron spectroscopy
Silicides
Core levels
Low energy electron diffraction
Dichroism
Photoemission
Synchrotron radiation
Solid solutions
Atoms
Electrons

Предметные области Scopus

  • Поверхности, слои и пленки

Цитировать

Grebenyuk, G. S. ; Vilkov, O. Yu ; Rybkin, A. G. ; Gomoyunova, M. V. ; Senkovskiy, B. V. ; Usachov, D. Yu ; Vyalikh, D. V. ; Molodtsov, S. L. ; Pronin, I. I. / Intercalation synthesis of graphene-capped iron silicide atop Ni(111) : Evolution of electronic structure and ferromagnetic ordering. В: Applied Surface Science. 2017 ; Том 392. стр. 715-722.
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abstract = "A new method for synthesis of graphene-protected iron silicides has been tested, which consists in formation of graphene on Ni(111) followed by two-step intercalation of the system with Fe and Si. Characterization of the samples was performed in situ by low-energy electron diffraction, angular-resolved photoelectron spectroscopy, core-level photoelectron spectroscopy with synchrotron radiation and magnetic linear dichroism in photoemission of Fe 3p electrons. It is shown, that at 400 °C the intercalation of graphene/Ni(111) with iron occurs in a range up to 14 ML. The graphene layer strongly interacts with the topmost Fe atoms and stabilizes the fcc structure of the film. The in-plane ferromagnetic ordering of the film has a threshold nature and arises after the intercalation of 5 ML Fe due to the thickness-driven spin reorientation transition. Subsequent intercalation of graphene/Fe/Ni(111) with Si leads to the formation of the inhomogeneous system consisted of intercalated and nonintercalated areas. The intercalated islands coalesce at 2 ML Si when a Fe-Si solid solution covered with the Fe3Si surface silicide is formed. The Fe3Si silicide is ferromagnetic and has an ordered (√3 × √3)R30° structure. The graphene layer is weakly electronically coupled to the silicide phase keeping its remarkable properties ready for use.",
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Intercalation synthesis of graphene-capped iron silicide atop Ni(111) : Evolution of electronic structure and ferromagnetic ordering. / Grebenyuk, G. S.; Vilkov, O. Yu; Rybkin, A. G.; Gomoyunova, M. V.; Senkovskiy, B. V.; Usachov, D. Yu; Vyalikh, D. V.; Molodtsov, S. L.; Pronin, I. I.

В: Applied Surface Science, Том 392, 15.01.2017, стр. 715-722.

Результат исследований: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - Intercalation synthesis of graphene-capped iron silicide atop Ni(111)

T2 - Evolution of electronic structure and ferromagnetic ordering

AU - Grebenyuk, G. S.

AU - Vilkov, O. Yu

AU - Rybkin, A. G.

AU - Gomoyunova, M. V.

AU - Senkovskiy, B. V.

AU - Usachov, D. Yu

AU - Vyalikh, D. V.

AU - Molodtsov, S. L.

AU - Pronin, I. I.

PY - 2017/1/15

Y1 - 2017/1/15

N2 - A new method for synthesis of graphene-protected iron silicides has been tested, which consists in formation of graphene on Ni(111) followed by two-step intercalation of the system with Fe and Si. Characterization of the samples was performed in situ by low-energy electron diffraction, angular-resolved photoelectron spectroscopy, core-level photoelectron spectroscopy with synchrotron radiation and magnetic linear dichroism in photoemission of Fe 3p electrons. It is shown, that at 400 °C the intercalation of graphene/Ni(111) with iron occurs in a range up to 14 ML. The graphene layer strongly interacts with the topmost Fe atoms and stabilizes the fcc structure of the film. The in-plane ferromagnetic ordering of the film has a threshold nature and arises after the intercalation of 5 ML Fe due to the thickness-driven spin reorientation transition. Subsequent intercalation of graphene/Fe/Ni(111) with Si leads to the formation of the inhomogeneous system consisted of intercalated and nonintercalated areas. The intercalated islands coalesce at 2 ML Si when a Fe-Si solid solution covered with the Fe3Si surface silicide is formed. The Fe3Si silicide is ferromagnetic and has an ordered (√3 × √3)R30° structure. The graphene layer is weakly electronically coupled to the silicide phase keeping its remarkable properties ready for use.

AB - A new method for synthesis of graphene-protected iron silicides has been tested, which consists in formation of graphene on Ni(111) followed by two-step intercalation of the system with Fe and Si. Characterization of the samples was performed in situ by low-energy electron diffraction, angular-resolved photoelectron spectroscopy, core-level photoelectron spectroscopy with synchrotron radiation and magnetic linear dichroism in photoemission of Fe 3p electrons. It is shown, that at 400 °C the intercalation of graphene/Ni(111) with iron occurs in a range up to 14 ML. The graphene layer strongly interacts with the topmost Fe atoms and stabilizes the fcc structure of the film. The in-plane ferromagnetic ordering of the film has a threshold nature and arises after the intercalation of 5 ML Fe due to the thickness-driven spin reorientation transition. Subsequent intercalation of graphene/Fe/Ni(111) with Si leads to the formation of the inhomogeneous system consisted of intercalated and nonintercalated areas. The intercalated islands coalesce at 2 ML Si when a Fe-Si solid solution covered with the Fe3Si surface silicide is formed. The Fe3Si silicide is ferromagnetic and has an ordered (√3 × √3)R30° structure. The graphene layer is weakly electronically coupled to the silicide phase keeping its remarkable properties ready for use.

KW - Ferromagnetic materials

KW - Graphene

KW - Intercalation

KW - Iron silicides

KW - Photoelectron spectroscopy

KW - Thin films

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DO - 10.1016/j.apsusc.2016.09.103

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EP - 722

JO - Applied Surface Science

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