Magnetism in iron implanted oxides: A status report

H. P. Gunnlaugsson; R. Sielemann; T. E. Mølholt; W. B. Dlamini; K. Johnston; R. Mantovan; H. Masenda; D. Naidoo; W. N. Sibanda; K. Bharuth-Ram; M. Fanciulli; H. P. Gíslason; G. Langouche; S. Ólafsson; G. Weyer

doi:10.1007/s10751-010-0195-2

Magnetism in iron implanted oxides: A status report

H. P. Gunnlaugsson, R. Sielemann, T. E. Mølholt, W. B. Dlamini, K. Johnston, R. Mantovan, H. Masenda, D. Naidoo, W. N. Sibanda, K. Bharuth-Ram, M. Fanciulli, H. P. Gíslason, G. Langouche, S. Ólafsson, G. Weyer

University of Iceland

Research output: Contribution to journal › Article › peer-review

Abstract

Emission Mössbauer spectroscopy on ⁵⁷Fe fed by ⁵⁷Mn ions implanted in the metal oxides ZnO, MgO and Al₂O₃ has been performed. The implanted ions occupy different lattice sites and charge states. A magnetic part of the spectra in each oxide can be assigned to Fe³⁺ ions in a paramagnetic state with unusually long relaxation time observable to temperatures up to several hundreds Kelvin. Earlier expectations that the magnetic spectra could correspond to an ordered magnetic state could not be confirmed. A clear decision for paramagnetism and against an ordered magnetic state was achieved by applying a strong magnetic field of 0.6 Tesla. The relaxation times deduced were compared to spin-lattice relaxation times from electron paramagnetic resonance (EPR).

Original language	English
Pages (from-to)	43-52
Number of pages	10
Journal	Hyperfine Interactions
Volume	197
Issue number	1
DOIs	https://doi.org/10.1007/s10751-010-0195-2
Publication status	Published - 2010

Bibliographical note

Funding Information: Acknowledgements This work was supported by the European Union Sixth Framework through RII3-EURONS. K. Bharuth-Ram, W. Dlamini, H. Masenda, D. Naidoo and W. N. Sibanda acknowledge support from the South African National Research Foundation. T. E. Mølholt acknowledges support from the Icelandic Research Fund. Financial support of the German BMBF (contract no. 05KK4TS1/9) is also gratefully acknowledged, Y. Yoshida is acknowledged for help during data taking.

Other keywords

Iron implanted oxides
Magnetic ion
Magnetism
Mössbauer spectroscopy

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Gunnlaugsson, H. P., Sielemann, R., Mølholt, T. E., Dlamini, W. B., Johnston, K., Mantovan, R., Masenda, H., Naidoo, D., Sibanda, W. N., Bharuth-Ram, K., Fanciulli, M., Gíslason, H. P., Langouche, G., Ólafsson, S., & Weyer, G. (2010). Magnetism in iron implanted oxides: A status report. Hyperfine Interactions, 197(1), 43-52. https://doi.org/10.1007/s10751-010-0195-2

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title = "Magnetism in iron implanted oxides: A status report",

abstract = "Emission M{\"o}ssbauer spectroscopy on 57Fe fed by 57Mn ions implanted in the metal oxides ZnO, MgO and Al2O3 has been performed. The implanted ions occupy different lattice sites and charge states. A magnetic part of the spectra in each oxide can be assigned to Fe3+ ions in a paramagnetic state with unusually long relaxation time observable to temperatures up to several hundreds Kelvin. Earlier expectations that the magnetic spectra could correspond to an ordered magnetic state could not be confirmed. A clear decision for paramagnetism and against an ordered magnetic state was achieved by applying a strong magnetic field of 0.6 Tesla. The relaxation times deduced were compared to spin-lattice relaxation times from electron paramagnetic resonance (EPR).",

keywords = "Iron implanted oxides, Magnetic ion, Magnetism, M{\"o}ssbauer spectroscopy",

author = "Gunnlaugsson, \{H. P.\} and R. Sielemann and M{\o}lholt, \{T. E.\} and Dlamini, \{W. B.\} and K. Johnston and R. Mantovan and H. Masenda and D. Naidoo and Sibanda, \{W. N.\} and K. Bharuth-Ram and M. Fanciulli and G{\'i}slason, \{H. P.\} and G. Langouche and S. {\'O}lafsson and G. Weyer",

note = "Funding Information: Acknowledgements This work was supported by the European Union Sixth Framework through RII3-EURONS. K. Bharuth-Ram, W. Dlamini, H. Masenda, D. Naidoo and W. N. Sibanda acknowledge support from the South African National Research Foundation. T. E. M{\o}lholt acknowledges support from the Icelandic Research Fund. Financial support of the German BMBF (contract no. 05KK4TS1/9) is also gratefully acknowledged, Y. Yoshida is acknowledged for help during data taking.",

year = "2010",

doi = "10.1007/s10751-010-0195-2",

language = "English",

volume = "197",

pages = "43--52",

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T2 - A status report

AU - Gunnlaugsson, H. P.

AU - Sielemann, R.

AU - Mølholt, T. E.

AU - Dlamini, W. B.

AU - Johnston, K.

AU - Mantovan, R.

AU - Masenda, H.

AU - Naidoo, D.

AU - Sibanda, W. N.

AU - Bharuth-Ram, K.

AU - Fanciulli, M.

AU - Gíslason, H. P.

AU - Langouche, G.

AU - Ólafsson, S.

AU - Weyer, G.

N1 - Funding Information: Acknowledgements This work was supported by the European Union Sixth Framework through RII3-EURONS. K. Bharuth-Ram, W. Dlamini, H. Masenda, D. Naidoo and W. N. Sibanda acknowledge support from the South African National Research Foundation. T. E. Mølholt acknowledges support from the Icelandic Research Fund. Financial support of the German BMBF (contract no. 05KK4TS1/9) is also gratefully acknowledged, Y. Yoshida is acknowledged for help during data taking.

PY - 2010

Y1 - 2010

N2 - Emission Mössbauer spectroscopy on 57Fe fed by 57Mn ions implanted in the metal oxides ZnO, MgO and Al2O3 has been performed. The implanted ions occupy different lattice sites and charge states. A magnetic part of the spectra in each oxide can be assigned to Fe3+ ions in a paramagnetic state with unusually long relaxation time observable to temperatures up to several hundreds Kelvin. Earlier expectations that the magnetic spectra could correspond to an ordered magnetic state could not be confirmed. A clear decision for paramagnetism and against an ordered magnetic state was achieved by applying a strong magnetic field of 0.6 Tesla. The relaxation times deduced were compared to spin-lattice relaxation times from electron paramagnetic resonance (EPR).

AB - Emission Mössbauer spectroscopy on 57Fe fed by 57Mn ions implanted in the metal oxides ZnO, MgO and Al2O3 has been performed. The implanted ions occupy different lattice sites and charge states. A magnetic part of the spectra in each oxide can be assigned to Fe3+ ions in a paramagnetic state with unusually long relaxation time observable to temperatures up to several hundreds Kelvin. Earlier expectations that the magnetic spectra could correspond to an ordered magnetic state could not be confirmed. A clear decision for paramagnetism and against an ordered magnetic state was achieved by applying a strong magnetic field of 0.6 Tesla. The relaxation times deduced were compared to spin-lattice relaxation times from electron paramagnetic resonance (EPR).

KW - Iron implanted oxides

KW - Magnetic ion

KW - Magnetism

KW - Mössbauer spectroscopy

UR - https://www.scopus.com/pages/publications/79951550416

U2 - 10.1007/s10751-010-0195-2

DO - 10.1007/s10751-010-0195-2

M3 - Article

SN - 0304-3843

VL - 197

SP - 43

EP - 52

JO - Hyperfine Interactions

JF - Hyperfine Interactions

IS - 1

ER -

Magnetism in iron implanted oxides: A status report

Abstract

Bibliographical note

Other keywords

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