Zobrazeno 1 - 10
of 45
pro vyhledávání: '"A.E.P. de Araujo"'
Publikováno v:
Journal of Magnetism and Magnetic Materials. 299:419-424
Giant magnetoimpedance (GMI) was measured in Joule heated Co68.18Fe4.32Si12.5B15 amorphous wires. Samples heat treated in open air showed an asymmetric giant magnetoimpedance (AGMI) behaviour. The AGMI profile, measured at selected frequency values a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::884470f55588c154f37537de1bead6c8
https://doi.org/10.1016/j.jmmm.2005.05.001
https://doi.org/10.1016/j.jmmm.2005.05.001
Publikováno v:
Journal of Magnetism and Magnetic Materials. 295:121-125
The effect of the dipolar field on the magnetoimpedance in Fe- and Co-based wires is presented. In the experiments a Co-based wire was used as a probe to measure the giant magnetoimpedance (GMI), while a Fe-based wire was employed to generate the dip
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b06a5e489fa24532bee2b06f0f51940
https://doi.org/10.1016/j.jmmm.2005.01.002
https://doi.org/10.1016/j.jmmm.2005.01.002
Publikováno v:
Journal of Magnetism and Magnetic Materials. 294:e63-e67
The magnetic properties of Co, Ni and NiFe sub-micrometric structures produced by holographic lithography and sputtering techniques are investigated. The structures were obtained using a mask previously recorded by holography in a photo-resist film c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adcb516b44ca3885d9e6e8a458ee4b53
https://doi.org/10.1016/j.jmmm.2005.03.055
https://doi.org/10.1016/j.jmmm.2005.03.055
Autor:
J.G.S. Duque, A.E.P. de Araujo, P. Ciureanu, Arthur Yelon, Marcelo Knobel, Cristina Gomez-Polo
Publikováno v:
Journal of Magnetism and Magnetic Materials. 271:390-395
The frequency dependence of the magnetoimpedance of an amorphous magnetic wire displays a behavior that appears to be ferromagnetic resonance, at a frequency of about 900 kHz. A helical anisotropy is induced in this wire by applying a torsional strai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9687a6e9692b7ee521ed696f75b2b359
https://doi.org/10.1016/j.jmmm.2003.10.005
https://doi.org/10.1016/j.jmmm.2003.10.005
Publikováno v:
Journal of Alloys and Compounds. 369:108-111
In this work, magneto-resistance and magneto-impedance (MI) data for bulk samples of pure and Y-doped La 0.7 Ca 0.3 MnO 3 manganites are reported. Temperature dependent measurements were carried out sweeping the applied magnetic field H in the − 6
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c3f99d5c076755d8916d0d301602238
https://doi.org/10.1016/j.jallcom.2003.09.083
https://doi.org/10.1016/j.jallcom.2003.09.083
Autor:
P. Ciureanu, A.E.P. de Araujo, J.G.S. Duque, Arthur Yelon, Marcelo Knobel, G. Rudkowska, L. Clime
Publikováno v:
Physica B: Condensed Matter. 343:410-414
The second harmonic of the magnetoinductance (MI) signal of a melt-extracted amorphous magnetic wire varies significantly with the strength of the DC axial field applied to the wire. Its amplitude at frequencies between 200 kHz and 1 MHz was measured
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5edd2f2637e62d3c2a246219bab2185d
https://doi.org/10.1016/j.physb.2003.08.078
https://doi.org/10.1016/j.physb.2003.08.078
Publikováno v:
Physica B: Condensed Matter. 320:67-70
Magnetotransport data measured in thin films of La 0.55 Ho 0.15 Sr 0.3 MnO 3 down to very low temperatures (0.25 K) are reported. The samples presented colossal magnetoresistance with a T C close to 200 K. A minimum in the resistance vs. T curve and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd70444e4928bb25d0e4ec1fad28c26c
https://doi.org/10.1016/s0921-4526(02)00622-1
https://doi.org/10.1016/s0921-4526(02)00622-1
Publikováno v:
Molecular Crystals and Liquid Crystals. 374:131-134
Magnetization and magnetic susceptibility of pellets of polyaniline basic- EB and acid doped-ES(HCOOH) and ES(HCl) were measured as a function of the temperature and magnetic field. Few but large magnetic moments are responsible for the magnetism in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ec28512be788e467a7f1f8e362c4981
https://doi.org/10.1080/10587250210444
https://doi.org/10.1080/10587250210444
Autor:
R. Pinto, Alexandre Ricalde Rodrigues, A.E.P. de Araujo, A. K. Nigam, Pratap Raychaudhuri, F.L.A. Machado
Publikováno v:
Solid State Communications. 112:423-427
We report the magneto-resistance measurements of a highly oriented La 0.55 Ho 0.15 Sr 0.3 MnO 3 film on LaAlO 3 substrate. The film has a metal–insulator transition around 200 K and shows pronounced thermomagnetic history effect in its transport pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e8692195f92c8dce0f5f4c508732cda
https://doi.org/10.1016/s0038-1098(99)00383-x
https://doi.org/10.1016/s0038-1098(99)00383-x
Publikováno v:
physica status solidi (a). 173:135-144
We present an investigation of the surface magnetoimpedance (Z s ) in ribbons of the amorphous alloy Co 70.4 Fe 4.6 Si 15 B 10 for a broad range of frequencies (2× 10 3 Hz≤f≤2 × 10 8 Hz) and magnitudes of the ac electrical current (2 mA ≤ I a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76ecb0185653c774a98e2988cb144c5d
https://doi.org/10.1002/(sici)1521-396x(199905)173:1<135::aid-pssa135>3.0.co
https://doi.org/10.1002/(sici)1521-396x(199905)173:1<135::aid-pssa135>3.0.co