Magnetic and magneto-optical studies in Co-Tb/Pt multilayers
Identifieur interne : 000F30 ( Main/Merge ); précédent : 000F29; suivant : 000F31Magnetic 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.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Platine.
English descriptors
- KwdEn :
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 (tCoTb) decreases below 200A the saturation magnetization increases, the rectangularity of the M-H loops and the coercivity decrease. The effective anisotropy Keff of the multilayers was determined by a torque magnetometer. The product Keff X tCoTb shows a linear dependence with tCoTb 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.
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Pascal:98-0509397Le document en format XML
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Magnetic and magneto-optical studies in Co-Tb/Pt multilayers</title>
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<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Physique Théorique, Université Hassan II, Faculté des Sciences, B.P. 5366 Maârif, Ain Chock, Route d'El Jadida km-8</s1>
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<author><name sortKey="Lassri, H" sort="Lassri, H" uniqKey="Lassri H" first="H." last="Lassri">H. Lassri</name>
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<author><name sortKey="Krishnan, R" sort="Krishnan, R" uniqKey="Krishnan R" first="R." last="Krishnan">R. Krishnan</name>
<affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Laboratoire de Magnétisme et d'Optique de l'Université de Versailles, CNRS, URA 1531, 45, Avenue des Etats-Unis</s1>
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<s3>FRA</s3>
<sZ>3 aut.</sZ>
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<series><title level="j" type="main">Solid state communications</title>
<title level="j" type="abbreviated">Solid state commun.</title>
<idno type="ISSN">0038-1098</idno>
<imprint><date when="1998">1998</date>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Binary alloys</term>
<term>Cobalt alloys</term>
<term>Coercive force</term>
<term>Experimental study</term>
<term>Kerr magneto-optical effect</term>
<term>Magnetic anisotropy</term>
<term>Magnetic hysteresis</term>
<term>Multilayers</term>
<term>Platinum</term>
<term>Saturation magnetization</term>
<term>Superlattices</term>
<term>Terbium alloys</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Etude expérimentale</term>
<term>Multicouche</term>
<term>Effet Kerr magnétooptique</term>
<term>Aimantation saturation</term>
<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>
<term>Alliage binaire</term>
<term>7570C</term>
<term>Alliage CoTb</term>
<term>Pt</term>
<term>Co Tb</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Platine</term>
</keywords>
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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>
X t<sub>CoTb</sub>
shows a linear dependence with t<sub>CoTb</sub>
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>
</front>
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<affiliations><list><country><li>France</li>
<li>Maroc</li>
</country>
<region><li>Île-de-France</li>
</region>
<settlement><li>Versailles</li>
</settlement>
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<tree><country name="Maroc"><noRegion><name sortKey="Hamouda, H" sort="Hamouda, H" uniqKey="Hamouda H" first="H." last="Hamouda">H. Hamouda</name>
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<name sortKey="Lassri, H" sort="Lassri, H" uniqKey="Lassri H" first="H." last="Lassri">H. Lassri</name>
<name sortKey="Saifaoui, D" sort="Saifaoui, D" uniqKey="Saifaoui D" first="D." last="Saifaoui">D. Saifaoui</name>
</country>
<country name="France"><region name="Île-de-France"><name sortKey="Krishnan, R" sort="Krishnan, R" uniqKey="Krishnan R" first="R." last="Krishnan">R. Krishnan</name>
</region>
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</tree>
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</record>
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