Mössbauer spectroscopy of 57Fe in α-Al2O3 following implantation of 57Mn*

Autor: H. P. Gunnlaugsson, R. Mantovan, T. E. Mølholt, D. Naidoo, K. Johnston, H. Masenda, K. Bharuth-Ram, G. Langouche, S. Ólafsson, R. Sielemann, G. Weyer, Y. Kobayashi, the ISOLDE collaboration

Publikováno v: Hyperfine interactions (Dordr., Online) 198 (2010): 5–13. doi:10.1007/s10751-010-0184-5
info:cnr-pdr/source/autori:H. P. Gunnlaugsson; R. Mantovan; T. E. Mølholt; D. Naidoo; K. Johnston; H. Masenda; K. Bharuth-Ram; G. Langouche; S. Ólafsson; R. Sielemann; G. Weyer; Y. Kobayashi; and the ISOLDE collaboration/titolo:Mössbauer spectroscopy of 57Fe in ?-Al2O3 following implantation of 57Mn*/doi:10.1007%2Fs10751-010-0184-5/rivista:Hyperfine interactions (Dordr., Online)/anno:2010/pagina_da:5/pagina_a:13/intervallo_pagine:5–13/volume:198
Gunnlaugsson, H P, Mantovan, R, Mølholt, T E, Naidoo, D, Johnston, K, Masenda, H, Bharuth-Ram, K, Langouche, G, Ólafsson, S, Sielemann, R, Weyer, G & Kobayashi, Y 2010, ' Mössbauer spectroscopy of 57 Fe in α-Al 2 O 3 following implantation of 57 Mn* ', Hyperfine Interactions, vol. 198, no. 1-3, pp. 5-13 . https://doi.org/10.1007/s10751-010-0184-5

The valence state and annealing reactions of Mn/Fe in single crystalline ?-Al2O3 have been determined following low fluence (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4df24411887968c43735ef5e84270da6
https://doi.org/10.1007/s10751-010-0184-5

Observation of spin-lattice relaxations of dilute Fe3+ in MgO by Mössbauer spectroscopy

Autor: T. E. Mølholt, Haraldur P. Gunnlaugsson, Sveinn Olafsson, D. Naidoo, K. Bharuth-Ram, Guido Langouche, Roberto Mantovan, G. Weyer, Karl Johnston, R. Sielemann, Yoshio Kobayashi, H.P. Gislason, Marco Fanciulli, Hilary Masenda

Publikováno v: Hyperfine interactions (Dordr., Online) 197 (2010): 89–94. doi:10.1007/s10751-010-0214-3
info:cnr-pdr/source/autori:T. E. Mølholt; R. Mantovan; H. P. Gunnlaugsson; D. Naidoo; S. Ólafsson; K. Bharuth-Ram; M. Fanciulli; K. Johnston; Y. Kobayashi; G. Langouche; H. Masenda; R. Sielemann; G. Weyer; H. P. Gíslason/titolo:Observation of spin-lattice relaxations of dilute Fe3+ in MgO by Mössbauer spectroscopy/doi:10.1007%2Fs10751-010-0214-3/rivista:Hyperfine interactions (Dordr., Online)/anno:2010/pagina_da:89/pagina_a:94/intervallo_pagine:89–94/volume:197
Mølholt, T E, Mantovan, R, Gunnlaugsson, H P, Naidoo, D, Ólafsson, S, Bharuth-Ram, K, Fanciulli, M, Johnston, K, Kobayashi, Y, Langouche, G, Masenda, H, Sielemann, R, Weyer, G & Gíslason, H P 2010, ' Observation of spin-lattice relaxations of dilute Fe 3+ in MgO by Mössbauer spectroscopy ', Hyperfine Interactions, vol. 197, no. 1-3, pp. 89-94 . https://doi.org/10.1007/s10751-010-0214-3

We present a method to describe the temperature dependence of emission Mössbauer spectra showing slow spin-lattice relaxations of Fe3 + in MgO single crystals, obtained after implantation of 57Mn at ISOLDE/CERN. The analysis is based on the Blume-Tj

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1dc0ce7e92bc445b4ae9130920fccb38
https://doi.org/10.1007/s10751-010-0214-3

Isothermal defect annealing in semiconductors investigated by time-delayed Mössbauer spectroscopy: application to ZnO

Autor: Sveinn Olafsson, Krish Bharuth-Ram, R. Mantovan, D. Naidoo, Haraldur P. Gunnlaugsson, G. Weyer, Karl Johnston, R. Sielemann, Marco Fanciulli, Guido Langouche

Publikováno v: Gunnlaugsson, H P, Weyer, G, Mantovan, R, Naidoo, D, Sielemann, R, Bharuth-Ram, K, Fanciulli, M, Johnston, K, Olafsson, S & Langouche, G 2009, ' Isothermal defect annealing in semiconductors investigated by time-delayed Mössbauerspectroscopy: application to ZnO ', Hyperfine Interactions, vol. 188, no. 1-3, pp. 85-98 . https://doi.org/10.1007/s10751-008-9893-4

The theory for so-called Time-Delayed-Measurements is outlined. This method allows for isothermal annealing studies in emission Mossbauer spectroscopy utilizing radioactive beams. The usefulness of this method is illustrated by the example of the ann

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d6d6b23692abff57c6815af14005bb0
https://doi.org/10.1007/s10751-008-9893-4

Mössbauer study of Fe in 3C-SiC following 57Mn implantation

Autor: Haraldur P. Gunnlaugsson, K. Bharuth-Ram, D. Naidoo, V. V. Naicker, G. Weyer, R. Sielemann, Roberto Mantovan, Th. Aigne

Publikováno v: Hyperfine interactions 184 (2008): 207–211. doi:10.1007/s10751-008-9791-9
info:cnr-pdr/source/autori:Bharuth-Ram, Krishanlal; Gunnlaugsson, Haraldur Páll; Mantovan, Roberto; Naicker, V. V.; Naidoo, Deena; Sielemann, Rainer; Weyer, Gerd; Aigne, Th/titolo:Mössbauer study of Fe in 3C-SiC following 57Mn implantation/doi:10.1007%2Fs10751-008-9791-9/rivista:Hyperfine interactions/anno:2008/pagina_da:207/pagina_a:211/intervallo_pagine:207–211/volume:184

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Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dcb9fefc42c7144f508aaa1cd652bf27
https://doi.org/10.1007/s10751-008-9791-9

Acceleration of Diffusional Jumps of Interstitial Fe with Increasing Ge Concentration in Si1 − x Ge x Alloys Observed by Mössbauer Spectroscopy

Autor: D. Naidoo, R. Sielemann, Haraldur P. Gunnlaugsson, G. Weyer, Krish Bharuth-Ram, Roberto Mantovan, M. Dietrich, V. Naicker

Publikováno v: Hyperfine Interactions. 158:417-421

Radioactive 57Mn isotopes have been implanted into Si1−xGex crystals (x ≤ 0.1) at elevated temperatures for Mossbauer studies of the diffusion of interstitial 57Fe daughter atoms. The atomic jump frequency is found to increase upon Ge alloying. T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d5dd2f3aeee73606e7dffe9e836a5c8c
https://doi.org/10.1007/s10751-005-9069-4