Zobrazeno 1 - 10
of 36
pro vyhledávání: '"O Ayala-Valenzuela"'
Autor:
José Andrés Matutes-Aquino, O. Ayala-Valenzuela, Luis Alfonso García-Cerda, H. Yee-Madeira, Rebeca Betancourt-Galindo, O. S. Rodríguez Fernández, G. Ramos
Publikováno v:
Journal of Magnetism and Magnetic Materials. 294:e33-e36
The Co 2+ ion in an octahedral site of the cubic spinel structure has a highly anisotropic character. The electric crystal field produces a degenerate ground state with a orbital magnetic momentum fixed parallel to a 〈1 1 1〉 trigonal axis, and th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2f57690c590f438a5c9e1292f8f0e5c
https://doi.org/10.1016/j.jmmm.2005.03.049
https://doi.org/10.1016/j.jmmm.2005.03.049
Autor:
O. Ayala-Valenzuela, José Andrés Matutes-Aquino, Luis Alfonso García-Cerda, O. S. Rodríguez Fernández, A. T. Giannitsis, P.C. Fannin, Rebeca Betancourt-Galindo
Publikováno v:
Journal of Magnetism and Magnetic Materials. 294:e37-e41
Due to the magnetic anisotropy introduced by the Co 2+ ion in octahedral sites of cubic spinel ferrites, it is possible to tailor the magnetic properties by changing the cobalt content. Magnetic fluids with magnetite-cobalt ferrite nanoparticles give
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c1d2f54cc14a9dc03607fce9772401c
https://doi.org/10.1016/j.jmmm.2005.03.050
https://doi.org/10.1016/j.jmmm.2005.03.050
Autor:
José Andrés Matutes-Aquino, Luis Alfonso García-Cerda, O. Ayala-Valenzuela, V.A. Torres-Garcı́a
Publikováno v:
Journal of Alloys and Compounds. 369:148-151
Magnetic nanocomposites of Co-ferrite nanoparticles dispersed in silica matrix (CoFe 2 O 4 /SiO 2 ) have been prepared by the sol–gel technique using tetraethylorthosilicate (TEOS) as precursor of silica, and metallic nitrates as precursors of ferr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7341947a279424c6e74d94ec29d4989
https://doi.org/10.1016/j.jallcom.2003.09.089
https://doi.org/10.1016/j.jallcom.2003.09.089
Autor:
J.P Muñoz Mendoza, V Corral Flores, S. D. de la Torre, O. Ayala Valenzuela, J. A. Matutes Aquino
Publikováno v:
Journal of Alloys and Compounds. 369:144-147
Powder mixture of magnetite (Fe 3 O 4 ) and elemental zinc (Zn) was high energy ball milled looking forward to synthesize a composite material able to enhance magnetic coercivity ( H c ). Results revealed up to 449.1 Oe for powder mixture treated for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fcc748e78706c341dbcc08b82434b483
https://doi.org/10.1016/j.jallcom.2003.09.075
https://doi.org/10.1016/j.jallcom.2003.09.075
Autor:
José Andrés Matutes-Aquino, Facundo Ruiz, S. A. Palomares-Sánchez, O. Ayala-Valenzuela, J. R. Martínez, S. Ponce-Castañeda
Publikováno v:
Journal of Sol-Gel Science and Technology. 27:247-254
A detailed infrared spectroscopy analysis in the 2500 to 3800 cm−1 region has been used to study the formation of species in samples of iron oxides embedded in silica xerogel matrix. We report the presence of α, β, and γ forms of iron oxyhydroxi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::072aad5c316061e8a7a1781dddd02915
https://doi.org/10.1023/a:1024009916120
https://doi.org/10.1023/a:1024009916120
Publikováno v:
IEEE Transactions on Magnetics. 37:2373-2376
A correlation between microstructure and frequency dependent magnetic properties of Mn-Zn ferrites was established using the inductance spectroscopy method. Several atmosphere conditions and dwell times and temperatures were used during sintering to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffd3ba7b2a2360c4151eeb2e76a7af46
https://doi.org/10.1109/20.951176
https://doi.org/10.1109/20.951176
Autor:
P. Sifuentes Gallardo, José Andrés Matutes-Aquino, D. Ríos-Jara, O. Ayala-Valenzuela, L.F. Ramos de Valle, O. S. Rodríguez Fernández
Publikováno v:
Polymer Composites. 21:734-738
A systematic study of the magnetic properties of strontium ferrite-polyvinyl chloride plastofemtes as a function of composition is presented. Plastoferrites were manufactured by hot compression of a mixture of commercial powders of strontium ferrite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26ea2ffe92fde0cdfa694678b4636131
https://doi.org/10.1002/pc.10227
https://doi.org/10.1002/pc.10227
Publikováno v:
Materials Letters. 38:173-177
Iron oxide powders were obtained by the isothermal decomposition of ferric citrate in an oxygen atmosphere at different temperatures. Throughout the experiments, the product of decomposition was a mixture of maghemite (γ-Fe 2 O 3 ) and hematite (α-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3aa497c5357d661aab870f1f37f3a7dd
https://doi.org/10.1016/s0167-577x(98)00154-2
https://doi.org/10.1016/s0167-577x(98)00154-2
Publikováno v:
Materials Science Forum. :469-473
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d979abfcee2934b6817c8e38ed8d594a
https://doi.org/10.4028/www.scientific.net/msf.302-303.469
https://doi.org/10.4028/www.scientific.net/msf.302-303.469
Publikováno v:
Materials Science Forum. :455-459
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6772264190c6e346f54876040c1ae111
https://doi.org/10.4028/www.scientific.net/msf.302-303.455
https://doi.org/10.4028/www.scientific.net/msf.302-303.455