Zobrazeno 1 - 10
of 16
pro vyhledávání: '"R. García Calderón"'
Autor:
Ola Hartmann, G.M. Kalvius, Roger Wäppling, Quentin A. Pankhurst, L. Fernández Barquín, R. García Calderón, N. Marcano, F. E. Wagner
Publikováno v:
Physica B: Condensed Matter. :67-70
Temperature-dependent zero-, longitudinal- and transverse-field μ SR spectra have been recorded in nanometric Fe 13 Cu 10 Ag 77 obtained by mechanical alloying. The alloy comprises Fe(Cu) nanoparticles (5 nm) in a Ag matrix formed by 16 nm particles
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bd66ee61e00f5980c15f27e55001385
https://doi.org/10.1016/j.physb.2005.11.017
https://doi.org/10.1016/j.physb.2005.11.017
Publikováno v:
Journal of Magnetism and Magnetic Materials. 266:131-141
Unambiguous evidence for non-dipolar, as well as dipolar, inter-granular interactions has been found in the strongly interacting superparamagnetic mechanical alloy Fe26Cu8Ag66. This alloy comprised 5–6 nm BCC Fe–Cu grains in a matrix of similarly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00a7fcb2ad6bb9320d88acdbdf8ef2b4
https://doi.org/10.1016/s0304-8853(03)00464-5
https://doi.org/10.1016/s0304-8853(03)00464-5
Publikováno v:
Journal of Magnetism and Magnetic Materials. 262:97-101
Melt-spun ribbons of Co 15 Cu 85 have been analysed by AC-susceptibility in as-quenched (AQ) and annealed (450°C, 500°C, 550°C, 30 min) conditions. The in-phase and out-of-phase components show maxima at T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8fa670d868d28b719fe4c9a2669d2e8
https://doi.org/10.1016/s0304-8853(03)00027-1
https://doi.org/10.1016/s0304-8853(03)00027-1
Publikováno v:
Journal of Non-Crystalline Solids. 287:20-25
Chemical reduction synthesis (CRS) has been employed to produce binary and ternary M–B (M = Fe, Co, Ni and Mn) alloys of different structural arrangements: amorphous and amorphous/nanocrystalline alloys, the latter comprising nanometric crystalline
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53cd97abeae88b71f34526daaef123d6
https://doi.org/10.1016/s0022-3093(01)00534-8
https://doi.org/10.1016/s0022-3093(01)00534-8
Publikováno v:
Journal of Magnetism and Magnetic Materials. 310:2518-2520
Mechanically alloyed Fe 22 Cu 14 Ag 64 comprising Fe(Cu) nanoparticles of 4.6 nm embedded in a Ag matrix has been produced in large quantities to study the in-field and zero field small-angle neutron scattering. The magnetic intensity has been obtain
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db88050a3990225d1bfcebdd12575c1c
https://doi.org/10.1016/j.jmmm.2006.11.149
https://doi.org/10.1016/j.jmmm.2006.11.149
Publikováno v:
Journal of Magnetism and Magnetic Materials. :E1177-E1179
The static and dynamic magnetic behaviors of mechanically alloyed Fe9Cu5Ag86 have been investigated by field-dependent DC magnetization and frequency-dependent AC susceptibility. The results reveal the coexistence of small Fe particles and ferromagne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4886812255a6a0827a41f76bb8379f6b
https://doi.org/10.1016/j.jmmm.2003.12.232
https://doi.org/10.1016/j.jmmm.2003.12.232
Publikováno v:
Journal of Magnetism and Magnetic Materials. :79-81
Granular alloys of Fe x Cu x Ag 100–2 x ( x =15, 35) have been produced by mechanical alloying. The x =15 alloy is composed of Fe(Cu) and Ag nanocrystals, whereas the Fe 35 Cu 35 Ag 30 is amorphous. DC magnetisation and AC susceptibility (5–300 K
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70a87dbf446e5aab2ef88241ee57ad9f
https://doi.org/10.1016/s0304-8853(02)00750-3
https://doi.org/10.1016/s0304-8853(02)00750-3
Autor:
A.L. Bleloch, Juan Rodríguez-Carvajal, Quentin A. Pankhurst, David W. McComb, R. García Calderón, L. Fernández Barquín, Richard J. Chater, B. Farago
Publikováno v:
Physical Review B. 76
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38006f9b5e1897c6a0a2e6cc84b88159
https://doi.org/10.1103/physrevb.76.172404
https://doi.org/10.1103/physrevb.76.172404
Autor:
R. García Calderón, L. Fernández Barquín, J.C. Gómez Sal, S. N. Kaul, Jan Skov Pedersen, Pedro Gorria, R. Heenan
Publikováno v:
Physical Review B. 71
Small-angle neutron scattering (SANS) measurements have been performed on an archetypal reentrant amorphous ferromagnet Fe{sub 91}Zr{sub 9} over the Q range 0.003 A{sup -1}
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44a8aae3528c19e6dcd48bbc66c87170
https://doi.org/10.1103/physrevb.71.134413
https://doi.org/10.1103/physrevb.71.134413
Publikováno v:
Journal of Magnetism and Magnetic Materials. :701-702
Monte Carlo simulations on three-dimensional lattices have been performed considering a simple model of a ferromagnetic spin system in an external magnetic field and with a random local anisotropy. For some particular values of the ratio between the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::428905c1c5c887743ebc641cc908cc7d
https://doi.org/10.1016/j.jmmm.2003.11.255
https://doi.org/10.1016/j.jmmm.2003.11.255