CobaltMaghrebV1, Main, Exploration, bibRecord, 000778

Thermomagnetic study of the amorphous cobalt-erbium borides Co80ErxB20-x (0 ≤ x ≤ 4)

Identifieur interne : 000778 ( Main/Exploration ); précédent : 000777; suivant : 000779

Thermomagnetic study of the amorphous cobalt-erbium borides Co80ErxB20-x (0 ≤ x ≤ 4)

Auteurs : A. Dahmani [Maroc] ; O. Sassi [Maroc] ; M. Taibi [Maroc] ; J. Aride [Maroc] ; E. Loudghiri [Maroc] ; A. Hassini [Maroc] ; H. Lassri [Maroc] ; A. Belayachi [Maroc]

Source :

Journal of non-crystalline solids [ 0022-3093 ] ; 2008.

RBID : Pascal:08-0232169

Descripteurs français

Pascal (Inist)
- Effet thermomagnétique, Diffraction RX, Susceptibilité magnétique, Stabilité thermique, Concentration impureté, Addition erbium, Cristallisation, Point Curie, Magnétisme non colinéaire, Borure de cobalt, Anisotropie magnétique, Transition vitreuse, Etat amorphe.

English descriptors

KwdEn :
- Amorphous state, Cobalt boride, Crystallization, Curie point, Erbium additions, Glass transition, Impurity density, Magnetic anisotropy, Magnetic susceptibility, Noncollinear magnetism, Thermal stability, Thermomagnetic effects, XRD.

Abstract

Calorimetric, magnetic and X-ray diffraction measurements have been used to study the magnetic susceptibility and thermal stability of Co_8oEr_xB_20-x with (0 <.v ≤ 4) amorphous ribbons. The compounds are found to crystallize in Co₂B and p-Co, after precipitation of the tetragonal Co₃B phase. The addition of erbium shifts up the crystallization temperature leading to the increase in the stability of the amorphous state. Magnetic susceptibility measurements show that the addition of erbium increases the Curie temperature and induces noncollinear magnetic behavior. This latter fact is explained on the basis of random local magnetic anisotropy related to the rare earth atoms in amorphous materials.

Affiliations:

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Le document en format XML

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Er<sub>x</sub>
B<sub>20-x</sub>
 (0 ≤ x ≤ 4)</title>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Thermomagnetic study of the amorphous cobalt-erbium borides Co<sub>80</sub>
Er<sub>x</sub>
B<sub>20-x</sub>
 (0 ≤ x ≤ 4)</title>
<author><name sortKey="Dahmani, A" sort="Dahmani, A" uniqKey="Dahmani A" first="A." last="Dahmani">A. Dahmani</name>
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<s3>MAR</s3>
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<country>Maroc</country>
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<affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Laboratoire de Physico-chimie des Matériaux. Associé à l'AUF (LAF502) ENS. B.P. 5118 Takaddoum</s1>
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<author><name sortKey="Sassi, O" sort="Sassi, O" uniqKey="Sassi O" first="O." last="Sassi">O. Sassi</name>
<affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Laboratoire de Physico-chimie des Matériaux. Associé à l'AUF (LAF502) ENS. B.P. 5118 Takaddoum</s1>
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<placeName><settlement type="city">Rabat</settlement>
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<author><name sortKey="Taibi, M" sort="Taibi, M" uniqKey="Taibi M" first="M." last="Taibi">M. Taibi</name>
<affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Laboratoire de Physico-chimie des Matériaux. Associé à l'AUF (LAF502) ENS. B.P. 5118 Takaddoum</s1>
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<author><name sortKey="Aride, J" sort="Aride, J" uniqKey="Aride J" first="J." last="Aride">J. Aride</name>
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<author><name sortKey="Loudghiri, E" sort="Loudghiri, E" uniqKey="Loudghiri E" first="E." last="Loudghiri">E. Loudghiri</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Physique des Matériaux. Faculté des Sciences, Université Mohammed V. B. P. 1014 Rabat</s1>
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<sZ>8 aut.</sZ>
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<author><name sortKey="Hassini, A" sort="Hassini, A" uniqKey="Hassini A" first="A." last="Hassini">A. Hassini</name>
<affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Laboratoire de Physique des Matériaux et Micro-électronique. Faculté des Sciences. Ain Chock. B.P. 5366 Casablanca</s1>
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</inist:fA14>
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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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<s3>MAR</s3>
<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Maroc</country>
<wicri:noRegion>Laboratoire de Physique des Matériaux et Micro-électronique. Faculté des Sciences. Ain Chock. B.P. 5366 Casablanca</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Belayachi, A" sort="Belayachi, A" uniqKey="Belayachi A" first="A." last="Belayachi">A. Belayachi</name>
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<s3>MAR</s3>
<sZ>1 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>8 aut.</sZ>
</inist:fA14>
<country>Maroc</country>
<wicri:noRegion>Laboratoire de Physique des Matériaux. Faculté des Sciences, Université Mohammed V. B. P. 1014 Rabat</wicri:noRegion>
</affiliation>
</author>
</analytic>
<series><title level="j" type="main">Journal of non-crystalline solids</title>
<title level="j" type="abbreviated">J. non-cryst. solids</title>
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</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Amorphous state</term>
<term>Cobalt boride</term>
<term>Crystallization</term>
<term>Curie point</term>
<term>Erbium additions</term>
<term>Glass transition</term>
<term>Impurity density</term>
<term>Magnetic anisotropy</term>
<term>Magnetic susceptibility</term>
<term>Noncollinear magnetism</term>
<term>Thermal stability</term>
<term>Thermomagnetic effects</term>
<term>XRD</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Effet thermomagnétique</term>
<term>Diffraction RX</term>
<term>Susceptibilité magnétique</term>
<term>Stabilité thermique</term>
<term>Concentration impureté</term>
<term>Addition erbium</term>
<term>Cristallisation</term>
<term>Point Curie</term>
<term>Magnétisme non colinéaire</term>
<term>Borure de cobalt</term>
<term>Anisotropie magnétique</term>
<term>Transition vitreuse</term>
<term>Etat amorphe</term>
</keywords>
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<front><div type="abstract" xml:lang="en">Calorimetric, magnetic and X-ray diffraction measurements have been used to study the magnetic susceptibility and thermal stability of Co<sub>8o</sub>
Er<sub>x</sub>
B<sub>20-x</sub>
 with (0 <.v ≤ 4) amorphous ribbons. The compounds are found to crystallize in Co<sub>2</sub>
B and p-Co, after precipitation of the tetragonal Co<sub>3</sub>
B phase. The addition of erbium shifts up the crystallization temperature leading to the increase in the stability of the amorphous state. Magnetic susceptibility measurements show that the addition of erbium increases the Curie temperature and induces noncollinear magnetic behavior. This latter fact is explained on the basis of random local magnetic anisotropy related to the rare earth atoms in amorphous materials.</div>
</front>
</TEI>
<affiliations><list><country><li>Maroc</li>
</country>
<region><li>Rabat-Salé-Kénitra</li>
</region>
<settlement><li>Rabat</li>
</settlement>
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<tree><country name="Maroc"><noRegion><name sortKey="Dahmani, A" sort="Dahmani, A" uniqKey="Dahmani A" first="A." last="Dahmani">A. Dahmani</name>
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<name sortKey="Aride, J" sort="Aride, J" uniqKey="Aride J" first="J." last="Aride">J. Aride</name>
<name sortKey="Belayachi, A" sort="Belayachi, A" uniqKey="Belayachi A" first="A." last="Belayachi">A. Belayachi</name>
<name sortKey="Dahmani, A" sort="Dahmani, A" uniqKey="Dahmani A" first="A." last="Dahmani">A. Dahmani</name>
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<name sortKey="Loudghiri, E" sort="Loudghiri, E" uniqKey="Loudghiri E" first="E." last="Loudghiri">E. Loudghiri</name>
<name sortKey="Sassi, O" sort="Sassi, O" uniqKey="Sassi O" first="O." last="Sassi">O. Sassi</name>
<name sortKey="Taibi, M" sort="Taibi, M" uniqKey="Taibi M" first="M." last="Taibi">M. Taibi</name>
</country>
</tree>
</affiliations>
</record>

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Thermomagnetic study of the amorphous cobalt-erbium borides Co80ErxB20-x (0 ≤ x ≤ 4)

Thermomagnetic study of the amorphous cobalt-erbium borides Co80ErxB20-x (0 ≤ x ≤ 4)

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri