Ferromagnetic decoration in metal-semiconductor separated and ferrocene functionalized single-walled carbon nanotubes

A. Chernov; M. Havlicek; W. Jantsch; M.H. Rümmeli; A. Bachmatiuk; K. Yanagi; H. Peterlik; H. Kataura; Franz Sauerzopf; Roland Resel; Ferenc Simon; H. Kuzmany

doi:10.1002/pssb.201200452

Ferromagnetic decoration in metal-semiconductor separated and ferrocene functionalized single-walled carbon nanotubes

A. Chernov
, M. Havlicek
, W. Jantsch
, M.H. Rümmeli
, A. Bachmatiuk
, K. Yanagi
, H. Peterlik
, H. Kataura
, Franz Sauerzopf
, Roland Resel
, Ferenc Simon
, H. Kuzmany

Publications: Contribution to journal › Article › Peer Reviewed

Abstract

Spin resonance, magnetic measurements, and structural analysis are reported for metal-semiconductor separated SWCNTs after filling with ferrocene. Raman scattering performed after a heat treatment confirms partial transformation to double-walled CNTs but results from spin resonance (FMR), X-ray diffraction, and TEM evidence in addition the growth of ferromagnetic nanoparticles. For the metallic tubes the particles are identified as magnetite (Fe3O4) with full chemical stoichiometry. From the temperature dependence of the FMR response and from measurements of the magnetization by dc and ac SQUID the magnetite crystals are shown to undergo a Verwey transition. The transition temperature from the SQUID experiment is around 125?K as expected but considerably higher than observed from the FMR analysis. Results for semiconducting tubes are similar but magnetic particles are an order of magnitude smaller and exhibit different structures in addition to magnetite.

Original language	English
Pages (from-to)	2323-2327
Number of pages	5
Journal	Physica Status Solidi. B: Basic Research
Volume	249
Issue number	12
DOIs	https://doi.org/10.1002/pssb.201200452
Publication status	Published - 1 Dec 2012

Austrian Fields of Science 2012

103009 Solid state physics
103015 Condensed matter
103018 Materials physics

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10.1002/pssb.201200452

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Chernov, A., Havlicek, M., Jantsch, W., Rümmeli, M. H., Bachmatiuk, A., Yanagi, K., Peterlik, H., Kataura, H., Sauerzopf, F., Resel, R., Simon, F., & Kuzmany, H. (2012). Ferromagnetic decoration in metal-semiconductor separated and ferrocene functionalized single-walled carbon nanotubes. Physica Status Solidi. B: Basic Research, 249(12), 2323-2327. https://doi.org/10.1002/pssb.201200452

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abstract = "Spin resonance, magnetic measurements, and structural analysis are reported for metal-semiconductor separated SWCNTs after filling with ferrocene. Raman scattering performed after a heat treatment confirms partial transformation to double-walled CNTs but results from spin resonance (FMR), X-ray diffraction, and TEM evidence in addition the growth of ferromagnetic nanoparticles. For the metallic tubes the particles are identified as magnetite (Fe3O4) with full chemical stoichiometry. From the temperature dependence of the FMR response and from measurements of the magnetization by dc and ac SQUID the magnetite crystals are shown to undergo a Verwey transition. The transition temperature from the SQUID experiment is around 125?K as expected but considerably higher than observed from the FMR analysis. Results for semiconducting tubes are similar but magnetic particles are an order of magnitude smaller and exhibit different structures in addition to magnetite.",

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Chernov, A, Havlicek, M, Jantsch, W, Rümmeli, MH, Bachmatiuk, A, Yanagi, K, Peterlik, H, Kataura, H, Sauerzopf, F, Resel, R, Simon, F & Kuzmany, H 2012, 'Ferromagnetic decoration in metal-semiconductor separated and ferrocene functionalized single-walled carbon nanotubes', Physica Status Solidi. B: Basic Research, vol. 249, no. 12, pp. 2323-2327. https://doi.org/10.1002/pssb.201200452

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T1 - Ferromagnetic decoration in metal-semiconductor separated and ferrocene functionalized single-walled carbon nanotubes

AU - Chernov, A.

AU - Havlicek, M.

AU - Jantsch, W.

AU - Rümmeli, M.H.

AU - Bachmatiuk, A.

AU - Yanagi, K.

AU - Peterlik, H.

AU - Kataura, H.

AU - Sauerzopf, Franz

AU - Resel, Roland

AU - Simon, Ferenc

AU - Kuzmany, H.

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N2 - Spin resonance, magnetic measurements, and structural analysis are reported for metal-semiconductor separated SWCNTs after filling with ferrocene. Raman scattering performed after a heat treatment confirms partial transformation to double-walled CNTs but results from spin resonance (FMR), X-ray diffraction, and TEM evidence in addition the growth of ferromagnetic nanoparticles. For the metallic tubes the particles are identified as magnetite (Fe3O4) with full chemical stoichiometry. From the temperature dependence of the FMR response and from measurements of the magnetization by dc and ac SQUID the magnetite crystals are shown to undergo a Verwey transition. The transition temperature from the SQUID experiment is around 125?K as expected but considerably higher than observed from the FMR analysis. Results for semiconducting tubes are similar but magnetic particles are an order of magnitude smaller and exhibit different structures in addition to magnetite.

AB - Spin resonance, magnetic measurements, and structural analysis are reported for metal-semiconductor separated SWCNTs after filling with ferrocene. Raman scattering performed after a heat treatment confirms partial transformation to double-walled CNTs but results from spin resonance (FMR), X-ray diffraction, and TEM evidence in addition the growth of ferromagnetic nanoparticles. For the metallic tubes the particles are identified as magnetite (Fe3O4) with full chemical stoichiometry. From the temperature dependence of the FMR response and from measurements of the magnetization by dc and ac SQUID the magnetite crystals are shown to undergo a Verwey transition. The transition temperature from the SQUID experiment is around 125?K as expected but considerably higher than observed from the FMR analysis. Results for semiconducting tubes are similar but magnetic particles are an order of magnitude smaller and exhibit different structures in addition to magnetite.

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JF - Physica Status Solidi. B: Basic Research

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Ferromagnetic decoration in metal-semiconductor separated and ferrocene functionalized single-walled carbon nanotubes

Abstract

Austrian Fields of Science 2012

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