Structural, compositional and annealing effects on magnetic properties in R1-XCOX(R = Er, Tb, Sm) amorphous thin film alloys
Identifieur interne : 000824 ( Main/Exploration ); précédent : 000823; suivant : 000825Structural, compositional and annealing effects on magnetic properties in R1-XCOX(R = Er, Tb, Sm) amorphous thin film alloys
Auteurs : M. L. Soltani [Algérie]Source :
- Journal of non-crystalline solids [ 0022-3093 ] ; 2007.
Descripteurs français
- Pascal (Inist)
- Aimantation, Propriété magnétique, Composition chimique, Hystérésis magnétique, RBS, Microscopie électronique balayage, Point Curie, Force coercitive, Lanthanide alliage, Microstructure, Cristallisation, Recuit, Cobalt alliage, Alliage amorphe, Couche mince, Verre métallique, Métal transition alliage, 7570A, 7550K.
English descriptors
- KwdEn :
Abstract
Amorphous alloys of the rare earths and transition metals series possess unique magnetic properties which are highly dependent on the alloy compositions and the microstructure. The magnetic properties have been investigated in various sputtered R1-xCox amorphous thin film alloys presenting highly anisotropic magnetic systems. Samples have been annealed for different temperatures. The magnetic changes, at various composition and various temperatures, have been measured by vibrating sample magnetometer (VSM); the structural and compositional properties have been investigated utilizing Rutherford back scattering (RBS) and scanning electron microscopy (SEM) analysis. The most significant results are: (1) Curie temperatures Tc above room temperature and coercivity He are strongly dependent on the alloys composition; moreover, the shapes of hysteresis loops are affected and (2) field annealing (before temperature of crystallisation) makes the samples magnetically softer (reducing Hc) and reduce the internal stress induced during the deposition by inducing a well defined anisotropy.
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream PascalFrancis, to step Corpus: 000149
- to stream PascalFrancis, to step Curation: 000146
- to stream PascalFrancis, to step Checkpoint: 000143
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- to stream Main, to step Curation: 000824
Le document en format XML
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<term>Annealing</term>
<term>Chemical composition</term>
<term>Cobalt alloys</term>
<term>Coercive force</term>
<term>Crystallization</term>
<term>Curie point</term>
<term>Magnetic hysteresis</term>
<term>Magnetic properties</term>
<term>Magnetization</term>
<term>Metallic glasses</term>
<term>Microstructure</term>
<term>RBS</term>
<term>Rare earth alloys</term>
<term>Scanning electron microscopy</term>
<term>Thin films</term>
<term>Transition element alloys</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Aimantation</term>
<term>Propriété magnétique</term>
<term>Composition chimique</term>
<term>Hystérésis magnétique</term>
<term>RBS</term>
<term>Microscopie électronique balayage</term>
<term>Point Curie</term>
<term>Force coercitive</term>
<term>Lanthanide alliage</term>
<term>Microstructure</term>
<term>Cristallisation</term>
<term>Recuit</term>
<term>Cobalt alliage</term>
<term>Alliage amorphe</term>
<term>Couche mince</term>
<term>Verre métallique</term>
<term>Métal transition alliage</term>
<term>7570A</term>
<term>7550K</term>
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<front><div type="abstract" xml:lang="en">Amorphous alloys of the rare earths and transition metals series possess unique magnetic properties which are highly dependent on the alloy compositions and the microstructure. The magnetic properties have been investigated in various sputtered R<sub>1-x</sub>
Co<sub>x</sub>
amorphous thin film alloys presenting highly anisotropic magnetic systems. Samples have been annealed for different temperatures. The magnetic changes, at various composition and various temperatures, have been measured by vibrating sample magnetometer (VSM); the structural and compositional properties have been investigated utilizing Rutherford back scattering (RBS) and scanning electron microscopy (SEM) analysis. The most significant results are: (1) Curie temperatures T<sub>c</sub>
above room temperature and coercivity He are strongly dependent on the alloys composition; moreover, the shapes of hysteresis loops are affected and (2) field annealing (before temperature of crystallisation) makes the samples magnetically softer (reducing H<sub>c</sub>
) and reduce the internal stress induced during the deposition by inducing a well defined anisotropy.</div>
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