Magnetic and structural studies of mechanically alloyed (Fe50Co50)62Nb8B30 powder mixtures
Identifieur interne : 000715 ( Main/Exploration ); précédent : 000714; suivant : 000716Magnetic and structural studies of mechanically alloyed (Fe50Co50)62Nb8B30 powder mixtures
Auteurs : S. Alleg [Algérie] ; S. Azzaza [Algérie] ; R. Bensalem [Algérie] ; J. J. Sunol [Espagne] ; S. Khene [Algérie] ; G. Fillion [France]Source :
- Journal of alloys and compounds [ 0925-8388 ] ; 2009.
Descripteurs français
- Pascal (Inist)
- Alliage mécanique, Broyeur satellite, Broyeur boulet, Propriété thermique, Force coercitive, Aimantation, Diffraction RX, Calorimétrie différentielle balayage, Aimantation rémanente, Aimantation saturation, Densité défaut, Cristallisation, Alliage amorphe, Nanomatériau, Fer alliage, Cobalt alliage, Niobium alliage, Bore alliage, Métal transition alliage.
English descriptors
- KwdEn :
- Amorphous alloy, Ball mill, Boron alloys, Cobalt alloys, Coercive force, Crystallization, Defect density, Differential scanning calorimetry, Iron alloys, Magnetization, Mechanical alloying, Nanostructured materials, Niobium alloys, Planetary mill, Remanent magnetization, Saturation magnetization, Thermal properties, Transition element alloys, XRD.
Abstract
Amorphous (Fe50Co50)62Nb8B30 powder mixture was prepared by mechanical alloying from elemental Fe, Co, B and Nb powders in a planetary ball mill under argon atmosphere. Structural, thermal and magnetic properties were performed on the milled powders by means of X-ray diffraction, differential scanning calorimetry and magnetic measurements. The amorphous state is reached after 125 h of milling. The excess enthalpy due to the high density of defects is released at temperature below 300 °C. Crystallisation and growth of crystal domains are the dominating processes at high temperatures. The saturation magnetisation decreases rapidly during the first 25 h of milling to about 15.24A m2/kg and remains nearly constant on further milling. Coercivity, Hc, value of about 160 Oe is obtained after 125 h of milling.
Affiliations:
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Azzaza</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Magnétisme et Spectroscopie des Solides, Département de Physique, Faculté des Sciences, Université de Annaba, B.P. 12</s1><s2>23000 Annaba</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>23000 Annaba</wicri:noRegion></affiliation></author><author><name sortKey="Bensalem, R" sort="Bensalem, R" uniqKey="Bensalem R" first="R." last="Bensalem">R. Bensalem</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Magnétisme et Spectroscopie des Solides, Département de Physique, Faculté des Sciences, Université de Annaba, B.P. 12</s1><s2>23000 Annaba</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>23000 Annaba</wicri:noRegion></affiliation></author><author><name sortKey="Sunol, J J" sort="Sunol, J J" uniqKey="Sunol J" first="J. J." last="Sunol">J. J. 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Alleg</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Magnétisme et Spectroscopie des Solides, Département de Physique, Faculté des Sciences, Université de Annaba, B.P. 12</s1><s2>23000 Annaba</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>23000 Annaba</wicri:noRegion></affiliation></author><author><name sortKey="Azzaza, S" sort="Azzaza, S" uniqKey="Azzaza S" first="S." last="Azzaza">S. Azzaza</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Magnétisme et Spectroscopie des Solides, Département de Physique, Faculté des Sciences, Université de Annaba, B.P. 12</s1><s2>23000 Annaba</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>23000 Annaba</wicri:noRegion></affiliation></author><author><name sortKey="Bensalem, R" sort="Bensalem, R" uniqKey="Bensalem R" first="R." last="Bensalem">R. Bensalem</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Magnétisme et Spectroscopie des Solides, Département de Physique, Faculté des Sciences, Université de Annaba, B.P. 12</s1><s2>23000 Annaba</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>23000 Annaba</wicri:noRegion></affiliation></author><author><name sortKey="Sunol, J J" sort="Sunol, J J" uniqKey="Sunol J" first="J. J." last="Sunol">J. J. Sunol</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Dep. de Fisica, Universitat de Girona, Campus Montilivi</s1><s2>Girona 17071</s2><s3>ESP</s3><sZ>4 aut.</sZ></inist:fA14><country>Espagne</country><placeName><region nuts="2" type="communauté">Catalogne</region></placeName></affiliation></author><author><name sortKey="Khene, S" sort="Khene, S" uniqKey="Khene S" first="S." last="Khene">S. Khene</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Département de Physique, Université de Annaba, B.P. 12</s1><s2>23000 Annaba</s2><s3>DZA</s3><sZ>5 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>23000 Annaba</wicri:noRegion></affiliation></author><author><name sortKey="Fillion, G" sort="Fillion, G" uniqKey="Fillion G" first="G." last="Fillion">G. Fillion</name><affiliation wicri:level="3"><inist:fA14 i1="04"><s1>Département Nano, Institut Néel, CNRS, B.P. 166</s1><s2>38042 Grenoble</s2><s3>FRA</s3><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region><settlement type="city">Grenoble</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">Journal of alloys and compounds</title><title level="j" type="abbreviated">J. alloys compd.</title><idno type="ISSN">0925-8388</idno><imprint><date when="2009">2009</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of alloys and compounds</title><title level="j" type="abbreviated">J. alloys compd.</title><idno type="ISSN">0925-8388</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Amorphous alloy</term><term>Ball mill</term><term>Boron alloys</term><term>Cobalt alloys</term><term>Coercive force</term><term>Crystallization</term><term>Defect density</term><term>Differential scanning calorimetry</term><term>Iron alloys</term><term>Magnetization</term><term>Mechanical alloying</term><term>Nanostructured materials</term><term>Niobium alloys</term><term>Planetary mill</term><term>Remanent magnetization</term><term>Saturation magnetization</term><term>Thermal properties</term><term>Transition element alloys</term><term>XRD</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Alliage mécanique</term><term>Broyeur satellite</term><term>Broyeur boulet</term><term>Propriété thermique</term><term>Force coercitive</term><term>Aimantation</term><term>Diffraction RX</term><term>Calorimétrie différentielle balayage</term><term>Aimantation rémanente</term><term>Aimantation saturation</term><term>Densité défaut</term><term>Cristallisation</term><term>Alliage amorphe</term><term>Nanomatériau</term><term>Fer alliage</term><term>Cobalt alliage</term><term>Niobium alliage</term><term>Bore alliage</term><term>Métal transition alliage</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Amorphous (Fe<sub>50</sub>Co<sub>50</sub>)<sub>62</sub>Nb<sub>8</sub>B<sub>30</sub> powder mixture was prepared by mechanical alloying from elemental Fe, Co, B and Nb powders in a planetary ball mill under argon atmosphere. Structural, thermal and magnetic properties were performed on the milled powders by means of X-ray diffraction, differential scanning calorimetry and magnetic measurements. The amorphous state is reached after 125 h of milling. The excess enthalpy due to the high density of defects is released at temperature below 300 °C. Crystallisation and growth of crystal domains are the dominating processes at high temperatures. The saturation magnetisation decreases rapidly during the first 25 h of milling to about 15.24A m<sup>2</sup>/kg and remains nearly constant on further milling. Coercivity, H<sub>c</sub>, value of about 160 Oe is obtained after 125 h of milling.</div></front></TEI><affiliations><list><country><li>Algérie</li><li>Espagne</li><li>France</li></country><region><li>Auvergne-Rhône-Alpes</li><li>Catalogne</li><li>Rhône-Alpes</li></region><settlement><li>Grenoble</li></settlement></list><tree><country name="Algérie"><noRegion><name sortKey="Alleg, S" sort="Alleg, S" uniqKey="Alleg S" first="S." last="Alleg">S. Alleg</name></noRegion><name sortKey="Azzaza, S" sort="Azzaza, S" uniqKey="Azzaza S" first="S." last="Azzaza">S. Azzaza</name><name sortKey="Bensalem, R" sort="Bensalem, R" uniqKey="Bensalem R" first="R." last="Bensalem">R. Bensalem</name><name sortKey="Khene, S" sort="Khene, S" uniqKey="Khene S" first="S." last="Khene">S. Khene</name></country><country name="Espagne"><region name="Catalogne"><name sortKey="Sunol, J J" sort="Sunol, J J" uniqKey="Sunol J" first="J. J." last="Sunol">J. J. Sunol</name></region></country><country name="France"><region name="Auvergne-Rhône-Alpes"><name sortKey="Fillion, G" sort="Fillion, G" uniqKey="Fillion G" first="G." last="Fillion">G. Fillion</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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