CobaltMaghrebV1, Maroc, Analysis, bibRecord, 000189

Magnetic and magneto-optical studies in Co-Tb/Pt multilayers

Identifieur interne : 000189 ( Maroc/Analysis ); précédent : 000188; suivant : 000190

Magnetic and magneto-optical studies in Co-Tb/Pt multilayers

Auteurs : H. Hamouda [Maroc] ; H. Lassri [Maroc] ; R. Krishnan [France] ; D. Saifaoui [Maroc]

Source :

Solid state communications [ 0038-1098 ] ; 1998.

RBID : Pascal:98-0509397

Descripteurs français

Pascal (Inist)
- Etude expérimentale, Multicouche, Effet Kerr magnétooptique, Aimantation saturation, Force coercitive, Superréseau, Anisotropie magnétique, Hystérésis magnétique, Cobalt alliage, Terbium alliage, Platine, Alliage binaire, 7570C, Alliage CoTb, Pt, Co Tb.
Wicri :
- topic : Platine.

English descriptors

KwdEn :
- Binary alloys, Cobalt alloys, Coercive force, Experimental study, Kerr magneto-optical effect, Magnetic anisotropy, Magnetic hysteresis, Multilayers, Platinum, Saturation magnetization, Superlattices, Terbium alloys.

Abstract

We have prepared Co₈₆Tb₁₄/Pt multilayers by r.f. sputtering and studied their magnetic and magneto-optical properties. As the Co-Tb layer thickness (t_CoTb) decreases below 200A the saturation magnetization increases, the rectangularity of the M-H loops and the coercivity decrease. The effective anisotropy K_eff of the multilayers was determined by a torque magnetometer. The product K_eff X t_CoTb shows a linear dependence with t_CoTb as normally found for the superlattices yielding the bulk and surface anisotropies of 1 x 10 erg cm^-3 and - 0.2 erg cm^-2, respectively. These results are explained in terms of an interfacial Co-Pt layer. The polar Kerr rotation for the multilayers is found independent of layer thickness and is equal to 11.5 min, which is higher than the single thick layer.

Affiliations:

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Le document en format XML

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<term>Terbium alloys</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Etude expérimentale</term>
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<term>Force coercitive</term>
<term>Superréseau</term>
<term>Anisotropie magnétique</term>
<term>Hystérésis magnétique</term>
<term>Cobalt alliage</term>
<term>Terbium alliage</term>
<term>Platine</term>
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<front><div type="abstract" xml:lang="en">We have prepared Co<sub>86</sub>
Tb<sub>14</sub>
/Pt multilayers by r.f. sputtering and studied their magnetic and magneto-optical properties. As the Co-Tb layer thickness (t<sub>CoTb</sub>
) decreases below 200A the saturation magnetization increases, the rectangularity of the M-H loops and the coercivity decrease. The effective anisotropy K<sub>eff</sub>
 of the multilayers was determined by a torque magnetometer. The product K<sub>eff</sub>
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 as normally found for the superlattices yielding the bulk and surface anisotropies of 1 x 10 erg cm<sup>-3</sup>
 and - 0.2 erg cm<sup>-2</sup>
, respectively. These results are explained in terms of an interfacial Co-Pt layer. The polar Kerr rotation for the multilayers is found independent of layer thickness and is equal to 11.5 min, which is higher than the single thick layer.</div>
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Magnetic and magneto-optical studies in Co-Tb/Pt multilayers

Magnetic and magneto-optical studies in Co-Tb/Pt multilayers

Source :

Descripteurs français

English descriptors

Abstract

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