Zobrazeno 1 - 10
of 16
pro vyhledávání: '"C. B. Fitzgerald"'
Autor:
James G. Lunney, Munuswamy Venkatesan, C. B. Fitzgerald, Fintan McGee, I. Stanca, Lucio Strazzabosco Dorneles, D. O’Mahony, J. M. D. Coey
Publikováno v:
Applied Surface Science. 248:406-410
We have studied the structural and magnetic properties of thin films of ZnO and GaN semiconductors doped with magnetic and non-magnetic transition-metals. The films were prepared on sapphire substrates by pulsed laser deposition from doped ceramic ta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d67e725802d30460dd31082744d81bdc
https://doi.org/10.1016/j.apsusc.2005.03.044
https://doi.org/10.1016/j.apsusc.2005.03.044
Autor:
James G. Lunney, J. M. D. Coey, Lucio Strazzabosco Dorneles, Munuswamy Venkatesan, C. B. Fitzgerald
Publikováno v:
Applied Surface Science. 247:493-496
Room temperature ferromagnetism is observed in thin films of ZnO doped with 1–25 at.% cobalt. Bulk samples were synthesized by a solid-state reaction technique and (1 1 0) textured thin films were prepared by pulsed laser deposition on R-cut sapphi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abddf27c444e77bd804db179f7c6cc43
https://doi.org/10.1016/j.apsusc.2005.01.043
https://doi.org/10.1016/j.apsusc.2005.01.043
Publikováno v:
Nature. 420:156-159
There have recently been various reports of weak ferromagnetism in graphite (1,2) and synthetic carbon materials (3) such as rhombohedral C60 (4), as well as a theoretical prediction of a ferromagnetic instability in graphene sheets (5). With very sm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ad43391d8afa1ee30655aaca81d77f5
https://doi.org/10.1038/nature01100
https://doi.org/10.1038/nature01100
Autor:
Lucio Strazzabosco Dorneles, Plamen Stamenov, James G. Lunney, Munuswamy Venkatesan, C. B. Fitzgerald, J. M. D. Coey
Publikováno v:
Journal of Magnetism and Magnetic Materials. :1405-1407
High-quality (1 1 0) films of ZnO, undoped or doped with the 3d transition metals from Sc to Cu, have been prepared on R-cut sapphire. Most of the films, including the one doped with Sc, exhibit ferromagnetic moments at room temperature greater than
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64f6318c401cf32af5673b1108933b84
https://doi.org/10.1016/j.jmmm.2004.11.450
https://doi.org/10.1016/j.jmmm.2004.11.450
Publikováno v:
IEEE Transactions on Magnetics. 38:2901-2903
Electron-doped double perovskite compounds (Sr/sub 2-x/La/sub x/)FeMoO/sub 6/ (x=0.0, 0.5, 0.7) were synthesized by combustion synthesis using oxalic acid dihydrazide as fuel. There is an increase in Curie temperature (T/sub C/) with La substitution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3a4003148a3a4b38764425ef2923f52
https://doi.org/10.1109/tmag.2002.803138
https://doi.org/10.1109/tmag.2002.803138
Autor:
Alexios P. Douvalis, J. Michael D. Coey, Fernando M.F. Rhen, U.V. Varadaraju, Munuswamy Venkatesan, C. B. Fitzgerald
Publikováno v:
Journal of Materials Chemistry. 12:2184-2186
A novel method of producing magnetoresistive oxides is described, which involves low temperature combustion synthesis from a mixture of nitrates and fuel, as applied to Sr2FeMoO6. The method yields ceramics with a fine crystallite size of 100–200 n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d41a97345222fe7130a9b7a2c5c3a77d
https://doi.org/10.1039/b204540k
https://doi.org/10.1039/b204540k
Carbonados are porous polycrystalline diamonds of uncertain origin, which are found at locations in Bahia (NE Brazil) and in the Central African Republic. Their combination of extreme hardness and toughness is ideal for drilling and cutting tools. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5727baf22bd5183142f81bd1c82449df
http://olympias.lib.uoi.gr/jspui/handle/123456789/17716
http://olympias.lib.uoi.gr/jspui/handle/123456789/17716
Autor:
P.A. Stampe, R. Gunning, Munuswamy Venkatesan, R.J. Kennedy, Eduardo Ceretta Moreira, C. B. Fitzgerald, Plamen Stamenov, U.S. Sias, Lucio Strazzabosco Dorneles, J. M. D. Coey
PUBLISHED
Thin films of SnO2 prepared by pulsed-laser deposition on R-cut sapphire substrates exhibit ferromagnetic properties at room temperature when they are doped with Cr, Mn, Fe, Co, or Ni, but not with other 3d cations. Extrapolated Curie
Thin films of SnO2 prepared by pulsed-laser deposition on R-cut sapphire substrates exhibit ferromagnetic properties at room temperature when they are doped with Cr, Mn, Fe, Co, or Ni, but not with other 3d cations. Extrapolated Curie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71cfc15156166f528e6da113022c1ead
Autor:
Lucio Strazzabosco Dorneles, J. M. D. Coey, Munuswamy Venkatesan, C. B. Fitzgerald, Plamen Stamenov
Publikováno v:
Physical Review B. 72
PUBLISHED
Thin films of HfO2 produced by pulsed-laser deposition on sapphire, yttria-stabilized zirconia, or silicon substrates show ferromagnetic magnetization curves with little hysteresis and extrapolated Curie temperatures far in excess of 4
Thin films of HfO2 produced by pulsed-laser deposition on sapphire, yttria-stabilized zirconia, or silicon substrates show ferromagnetic magnetization curves with little hysteresis and extrapolated Curie temperatures far in excess of 4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b40e012ad6b0f27a30b383f70c4bde1
https://doi.org/10.1103/physrevb.72.024450
https://doi.org/10.1103/physrevb.72.024450
Publikováno v:
Physical Review Letters. 93
PUBLISHED
The high-temperature ferromagnetism in doped zinc oxide films was discussed. A connection between the electronic structure of (Zn 1-xMx)O and its ferromagnetic properties was found. A new source of magnetism in these oxides, namely, tr
The high-temperature ferromagnetism in doped zinc oxide films was discussed. A connection between the electronic structure of (Zn 1-xMx)O and its ferromagnetic properties was found. A new source of magnetism in these oxides, namely, tr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60b00220367ba3500db4c289fdaf1258
https://doi.org/10.1103/physrevlett.93.177206
https://doi.org/10.1103/physrevlett.93.177206