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pro vyhledávání: '"M.I. da Costa"'
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Akademický článek
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Publikováno v:
Journal of Physics: Condensed Matter. 15:1-7
We report a study on the structural and magnetic properties of iron–vanadium thin films grown in multilayer form and mixed by thermal treatment. The multilayer samples were annealed at 610°C for times ranging from 10 to 540 min. The samples were s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::add04b26d6bf339b370d31e79da07e4f
https://doi.org/10.1088/0953-8984/15/2/301
https://doi.org/10.1088/0953-8984/15/2/301
Autor:
Maria do Carmo Martins Alves, S. R. Teixeira, M.I. da Costa, J.B.M. da Cunha, José Flávio Marcelino Borges
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. :485-489
We report a study on the structural and magnetic properties of iron–vanadium thin films, originally grown in multilayer form [Fe(20 A)/V(20 A)]20, and mixed by ion beam mixing (IBM) and a subsequent thermal treatment. The samples were structurally
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50a12100d8cfd8be2fe313477046dfff
https://doi.org/10.1016/s0168-583x(00)00564-4
https://doi.org/10.1016/s0168-583x(00)00564-4
Publikováno v:
Physical Review B. 61:6196-6204
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1fb4cb1b1b880534f828b38ba476dc0
https://doi.org/10.1103/physrevb.61.6196
https://doi.org/10.1103/physrevb.61.6196
Publikováno v:
Journal of Magnetism and Magnetic Materials. 166:223-230
In the present work we analyze the electronic structure of Fe 4 C using the linear muffin-tin orbital (LMTO) method. The calculations were carried out for several lattice parameters, and the total energy calculation gives the equilibrium volume. Anal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf45b4a7b3acbf1c0109137af66d5fa1
https://doi.org/10.1016/s0304-8853(96)00445-3
https://doi.org/10.1016/s0304-8853(96)00445-3
Autor:
Jacob Schaf, J.B.M. da Cunha, C. Paduani, J.C. de Lima, I. Denicoló, J.A. Valcanover, M.I. da Costa
Publikováno v:
Hyperfine Interactions. 108:413-422
The magnetic behavior of the pseudo-binary system Fe2(Nb1-xMnx) is investigated by means of the experimental techniques of X-ray diffraction (XRD), Mossbauer Spectroscopy (MS) and magnetization studies. The XRD results indicate that, up to x=0.3, all
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c538e78ea36e0b940943b0ad8cedfa50
https://doi.org/10.1023/a:1012647820988
https://doi.org/10.1023/a:1012647820988
Publikováno v:
Hyperfine Interactions. 108:465-475
The electronic structure and magnetic properties of Fe4C are investigated with the first-principles discrete variational method (DV) in spin-polarized case. It is used for the local spin density approximation of the density functional theory. Cluster
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2242d174afe7b45e1c0d16e6c1cc8f56
https://doi.org/10.1023/a:1012656022805
https://doi.org/10.1023/a:1012656022805
Autor:
M. L. dos Santos, J.C.P. de Oliveira, J. I. Kunrath, Noemia Ramos Vieira, A. Paesano, E. Fernandes de Lima, J. O. Chies, A. Roisenberg, M.I. da Costa
Publikováno v:
Hyperfine Interactions. 83:457-461
Low temperature Mossbauer spectroscopy is used to investigate the composition and the iron distribution in the M1 and M2 crystallographic sites of a fayalitic olivine in an H-type chondrite.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e216d6711e1ab4f90922487b9ec252b
https://doi.org/10.1007/bf02074317
https://doi.org/10.1007/bf02074317
Autor:
Gelza Englert, M.I. da Costa, Luiz U. Comparsi, Iduvirges Lourdes Muller, J. T. Moro, J. I. Kunrath
Publikováno v:
Hyperfine Interactions. 83:373-377
Metallic coupons are placed in strategical points of an oil refining plant in order to control the amount of corrosion produced by amine stripping of H2S from liquefied oil and combustible gases. This paper reports some of the results obtained by CEM
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::087ecb12d7cace38500c4c030c1dea32
https://doi.org/10.1007/bf02074302
https://doi.org/10.1007/bf02074302