INVESTIGADORES
MENDOZA ZELIS Pedro
artículos
Título:
Magnetic domain structure and Anisotropy distribution in Al/Metglas 2605S2/Al trilayers
Autor/es:
P. S. MOSCON; E. C. PASSAMANI; C. LARICA; F. H. SÁNCHEZ; P. MENDOZA ZÉLIS
Revista:
JOURNAL OF PHYSICS - D (APPLIED PHYSICS)
Editorial:
IOP PUBLISHING LTD
Referencias:
Año: 2008 vol. 41 p. 539051 - 539056
ISSN:
0022-3727
Resumen:
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Al coatings, with thickness (x) up to 20μm, were deposited by dc sputtering on both sides of
the Metglas 2605S2 precursor melt-spun
ribbons. Spin reorientation, induced by the
magnetoelastic effect, was clearly
observed in the Al/Metglas 2605S2/Al trilayers by
monitoring the 2 and 5 line intensities of
the M¨ossbauer spectra obtained at different
temperatures. The average spin orientation
angles can be controlled by adjusting the Al
thickness. A magneto-mechanical
coefficient, which measures the rate of spin reorientation
with respect to the temperature variation,
was obtained and is found to be equal to −0.15◦ K−1
and −0.28◦ K−1 for x = 5μm and 20μm, respectively.
Using a spin structure
phenomenological model, in-plane native
magnetic anisotropies ranging up to 3 kJm−3 were
estimated for the Metglas 2605S2 ribbons.
Energy anisotropy values higher than 20 kJm−3 are
associated with inhomogeneities and
defects from the sample preparation method and may
correspond to about 10% of the ribbon
volume.
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