Zobrazeno 1 - 10
of 108
pro vyhledávání: '"T. S. Plaskett"'
Publikováno v:
Scopus-Elsevier
CIÊNCIAVITAE
CIÊNCIAVITAE
Ferromagnetic/oxide junctions ( Si/NiFe 60 A /Al 2 O 3 t/ Co 65 A with t from 0 to 200 A and Si/NiFe 60 A /MgO t/ Co 65 A with t from 0 to 160 A) were prepared by reactive magnetron sputtering in a mixed Ar O 2 atmosphere. The growth process and the
Autor:
P. ten Berge, T. S. Plaskett, H. Boeve, J. L. Leal, A.R. Morais, João Ferreira, A.T. Sousa, Paulo P. Freitas, N.J. Oliveira, Leonel Cezar Rodrigues, G.B. Albuquerque
Publikováno v:
IEEE Transactions on Magnetics. 31:2603-2608
Unshielded spin-valve sensors, exchange biased with TbCo (trackwidths from 2 to 80 /spl mu/m) and with NiO (2 /spl mu/m trackwidth) have been fabricated, showing a well-linearized and Barkhausen noise free behaviour. The response at low frequency of
Autor:
T. R. McGuire, T. S. Plaskett
Publikováno v:
Journal of Applied Physics. 76:4734-4737
We find that sandwich films of the form Co50 A/Cu (t)/Co50 A with a CoO overlayer have large negative magnetoresistance [(MR)—up to 15% at T=4.2 K] for Cu thickness t≳10 A. The MR correlates with a plateau in the magnetization curve which indicat
Publikováno v:
Physical Review Letters. 70:230-233
The magneto-optical Kerr rotation was measured in Co/U-As multilayers and compared with calculations of the Kerr response of such multilayered structures. From the thicknessdependence of the Kerr rotation it is concluded that the U-As layers have an
Publikováno v:
Physical Review B. 46:6187-6194
Magneto-optical and magnetic properties are presented in sputtered amorphous thin films of U-As, U-As-Cu, and U-As-Ti. Included are magnetization, Hall effect, resistivity, and polar Kerr-rotation measurements. The U-As films show maximum magnetizati
Publikováno v:
Journal of Applied Physics. 69:4750-4755
Amorphous U‐Sb alloys in the vicinity of the composition U3Sb4 have magneto‐optic Faraday rotations of + 2 × 106 deg/cm. This is the highest rotation of any amorphous ferromagnetic material. These alloys also have relatively high Curie temperatu
Publikováno v:
Journal of Magnetism and Magnetic Materials. 93:485-488
Gd-Y-Gd bilayers were prepared that show a magnetoresistance enhancement when the non-magnetic Y layer separations is 11 or 32 A. This oscillatory behavior of the magnetoresistance versus Y thickness is tentatively related to oscillations in the inte
Autor:
T. S. Plaskett, Paulo P. Freitas
Publikováno v:
Physica Scripta. :110-114
U1-xSbx amorphous ferromagnets were prepared that show a magnetoresistance anisotropy (AMR) reaching 26% at 10 K, in a 50 kOe field. This is a striking result, since the AMR of typical amorphous ferromagnets does not exceed 1%. These materials are ra
Autor:
Shuxiang Li, Armando M. Fernandes, J. Pinheiro, P. ten Berge, T. S. Plaskett, Olivier Redon, J. L. Ferreira, Paulo P. Freitas, N.J. Oliveira
Publikováno v:
Journal of Applied Physics. 81:4903-4905
The thermal stability of TbCo exchange biased spin valve sensors has been extended to 230 °C, by using a Co pinned layer rather than NiFe. Magnetoresistance (MR) remains essentially stable up to annealing temperatures TA of 230 °C and degrades to 1
Publikováno v:
7th Joint MMM-Intermag Conference. Abstracts (Cat. No.98CH36275).