Thermomagnetic study of the amorphous cobalt-erbium borides Co80ErxB20-x (0 ≤ x ≤ 4)
Identifieur interne : 000072 ( Maroc/Analysis ); précédent : 000071; suivant : 000073Thermomagnetic 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.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Calorimetric, magnetic and X-ray diffraction measurements have been used to study the magnetic susceptibility and thermal stability of Co8oErxB20-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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<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>
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<author><name sortKey="Loudghiri, E" sort="Loudghiri, E" uniqKey="Loudghiri E" first="E." last="Loudghiri">E. Loudghiri</name>
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<series><title level="j" type="main">Journal of non-crystalline 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>
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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>
</list>
<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>
<name sortKey="Hassini, A" sort="Hassini, A" uniqKey="Hassini A" first="A." last="Hassini">A. Hassini</name>
<name sortKey="Lassri, H" sort="Lassri, H" uniqKey="Lassri H" first="H." last="Lassri">H. Lassri</name>
<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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