CobaltMaghrebV1, PascalFrancis, Corpus, bibRecord, 000067

Structural and magnetic properties of Co50Ni50 powder mixtures

Identifieur interne : 000067 ( PascalFrancis/Corpus ); précédent : 000066; suivant : 000068

Structural and magnetic properties of Co50Ni50 powder mixtures

Auteurs : N. Loudjani ; N. Bensebaa ; L. Dekhil ; S. Alleg ; J. J. Sunol

Source :

Journal of magnetism and magnetic materials [ 0304-8853 ] ; 2011.

RBID : Pascal:11-0386997

Descripteurs français

Pascal (Inist)
- Paramètre cristallin, Alliage mécanique, Broyeur satellite, Broyeur boulet, Microscopie électronique balayage, Diffraction RX, Calorimétrie différentielle balayage, Force coercitive, Aimantation saturation, Dimension particule, Transformation allotropique, Relation fabrication propriété, Hystérésis magnétique, Nanocristal, Réseau cubique face centrée, Réseau hexagonal compact, Nickel alliage, Cobalt alliage, Métal transition alliage.

English descriptors

KwdEn :
- Allotropic transformation, Ball mill, Cobalt alloys, Coercive force, Differential scanning calorimetry, FCC lattices, Fabrication property relation, HCP lattices, Lattice parameters, Magnetic hysteresis, Mechanical alloying, Nanocrystal, Nickel alloys, Particle size, Planetary mill, Saturation magnetization, Scanning electron microscopy, Transition element alloys, XRD.

Abstract

In the present work, morphological, structural, thermal and magnetic properties of nanocrystalline Co₅₀Ni₅₀ alloy prepared by high energy planetary ball milling have been studied by means of scanning electron microscopy, X-ray diffraction, and differential scanning calorimetry. The coercivity and the saturation magnetization of alloyed powders were measured at room temperature by a vibration sample magnetization. Morphological observations indicated a narrow distribution in the particle and homogeneous shape form with mean average particle size around 130 μm². The results show that an allotropic Co transformation hcp→fcc occurs within the three first hours of milling and contrary to what expected, the Rietveld refinement method reveals the formation of two fcc solid solutions (SS): fcc Co(Ni) and Ni(Co) beside a small amount of the undissolved Co hcp. Thermal measurement, as a function of milling time was carried out to confirm the existence of the hcp phase and to estimate its amount. Magnetic measurement indicated that the 48 h milled powders with a steady state particles size have the highest saturation (105.3 emu/g) and the lowest coercivity (34.5 Oe).

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A11	`05`	`1`		`@1 SUNOL (J. J.)`
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A64	`01`	`1`		`@0 Journal of magnetism and magnetic materials`
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C01	`01`		`ENG`	@0 In the present work, morphological, structural, thermal and magnetic properties of nanocrystalline Co₅₀Ni₅₀ alloy prepared by high energy planetary ball milling have been studied by means of scanning electron microscopy, X-ray diffraction, and differential scanning calorimetry. The coercivity and the saturation magnetization of alloyed powders were measured at room temperature by a vibration sample magnetization. Morphological observations indicated a narrow distribution in the particle and homogeneous shape form with mean average particle size around 130 μm². The results show that an allotropic Co transformation hcp→fcc occurs within the three first hours of milling and contrary to what expected, the Rietveld refinement method reveals the formation of two fcc solid solutions (SS): fcc Co(Ni) and Ni(Co) beside a small amount of the undissolved Co hcp. Thermal measurement, as a function of milling time was carried out to confirm the existence of the hcp phase and to estimate its amount. Magnetic measurement indicated that the 48 h milled powders with a steady state particles size have the highest saturation (105.3 emu/g) and the lowest coercivity (34.5 Oe).
C02	`01`	`3`		`@0 001B70E75`
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C03	`01`	`3`	`FRE`	`@0 Paramètre cristallin @5 02`
C03	`01`	`3`	`ENG`	`@0 Lattice parameters @5 02`
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C03	`07`	`3`	`ENG`	`@0 Differential scanning calorimetry @5 08`
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C03	`08`	`3`	`ENG`	`@0 Coercive force @5 09`
C03	`09`	`X`	`FRE`	`@0 Aimantation saturation @5 10`
C03	`09`	`X`	`ENG`	`@0 Saturation magnetization @5 10`
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C03	`10`	`3`	`FRE`	`@0 Dimension particule @5 11`
C03	`10`	`3`	`ENG`	`@0 Particle size @5 11`
C03	`11`	`X`	`FRE`	`@0 Transformation allotropique @5 12`
C03	`11`	`X`	`ENG`	`@0 Allotropic transformation @5 12`
C03	`11`	`X`	`SPA`	`@0 Transformación alotrópica @5 12`
C03	`12`	`X`	`FRE`	`@0 Relation fabrication propriété @5 13`
C03	`12`	`X`	`ENG`	`@0 Fabrication property relation @5 13`
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C03	`13`	`3`	`FRE`	`@0 Hystérésis magnétique @5 14`
C03	`13`	`3`	`ENG`	`@0 Magnetic hysteresis @5 14`
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C03	`14`	`X`	`ENG`	`@0 Nanocrystal @5 15`
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N21				`@1 262`

Format Inist (serveur)

NO :	PASCAL 11-0386997 INIST
ET :	Structural and magnetic properties of Co₅₀Ni₅₀ powder mixtures
AU :	LOUDJANI (N.); BENSEBAA (N.); DEKHIL (L.); ALLEG (S.); SUNOL (J. J.)
AF :	Laboratoire de Magnétisme et Spectroscopie des solides, Département de Physique, Faculté des Sciences, Université Badji Mokhtar, B.P. 12/23000 Annaba/Algérie (1 aut., 2 aut., 3 aut., 4 aut.); Dep. de Fisica, Universitat de Girona, Campus Montilivi/Girona 17071/Espagne (5 aut.)
DT :	Publication en série; Niveau analytique
SO :	Journal of magnetism and magnetic materials; ISSN 0304-8853; Coden JMMMDC; Pays-Bas; Da. 2011; Vol. 323; No. 23; Pp. 3063-3070; Bibl. 38 ref.
LA :	Anglais
EA :	In the present work, morphological, structural, thermal and magnetic properties of nanocrystalline Co₅₀Ni₅₀ alloy prepared by high energy planetary ball milling have been studied by means of scanning electron microscopy, X-ray diffraction, and differential scanning calorimetry. The coercivity and the saturation magnetization of alloyed powders were measured at room temperature by a vibration sample magnetization. Morphological observations indicated a narrow distribution in the particle and homogeneous shape form with mean average particle size around 130 μm². The results show that an allotropic Co transformation hcp→fcc occurs within the three first hours of milling and contrary to what expected, the Rietveld refinement method reveals the formation of two fcc solid solutions (SS): fcc Co(Ni) and Ni(Co) beside a small amount of the undissolved Co hcp. Thermal measurement, as a function of milling time was carried out to confirm the existence of the hcp phase and to estimate its amount. Magnetic measurement indicated that the 48 h milled powders with a steady state particles size have the highest saturation (105.3 emu/g) and the lowest coercivity (34.5 Oe).
CC :	001B70E75; 001B60A46
FD :	Paramètre cristallin; Alliage mécanique; Broyeur satellite; Broyeur boulet; Microscopie électronique balayage; Diffraction RX; Calorimétrie différentielle balayage; Force coercitive; Aimantation saturation; Dimension particule; Transformation allotropique; Relation fabrication propriété; Hystérésis magnétique; Nanocristal; Réseau cubique face centrée; Réseau hexagonal compact; Nickel alliage; Cobalt alliage; Métal transition alliage
ED :	Lattice parameters; Mechanical alloying; Planetary mill; Ball mill; Scanning electron microscopy; XRD; Differential scanning calorimetry; Coercive force; Saturation magnetization; Particle size; Allotropic transformation; Fabrication property relation; Magnetic hysteresis; Nanocrystal; FCC lattices; HCP lattices; Nickel alloys; Cobalt alloys; Transition element alloys
SD :	Molino rodillos satelite; Molino bolas; Imanación saturación; Transformación alotrópica; Relación fabricación propiedad; Nanocristal
LO :	INIST-17230.354000191167560260
ID :	11-0386997

Links to Exploration step

Pascal:11-0386997

Le document en format XML

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<front><div type="abstract" xml:lang="en">In the present work, morphological, structural, thermal and magnetic properties of nanocrystalline Co<sub>50</sub>
Ni<sub>50</sub>
 alloy prepared by high energy planetary ball milling have been studied by means of scanning electron microscopy, X-ray diffraction, and differential scanning calorimetry. The coercivity and the saturation magnetization of alloyed powders were measured at room temperature by a vibration sample magnetization. Morphological observations indicated a narrow distribution in the particle and homogeneous shape form with mean average particle size around 130 μm<sup>2</sup>
. The results show that an allotropic Co transformation hcp→fcc occurs within the three first hours of milling and contrary to what expected, the Rietveld refinement method reveals the formation of two fcc solid solutions (SS): fcc Co(Ni) and Ni(Co) beside a small amount of the undissolved Co hcp. Thermal measurement, as a function of milling time was carried out to confirm the existence of the hcp phase and to estimate its amount. Magnetic measurement indicated that the 48 h milled powders with a steady state particles size have the highest saturation (105.3 emu/g) and the lowest coercivity (34.5 Oe).</div>
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 powder mixtures</s1>
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<fC01 i1="01" l="ENG"><s0>In the present work, morphological, structural, thermal and magnetic properties of nanocrystalline Co<sub>50</sub>
Ni<sub>50</sub>
 alloy prepared by high energy planetary ball milling have been studied by means of scanning electron microscopy, X-ray diffraction, and differential scanning calorimetry. The coercivity and the saturation magnetization of alloyed powders were measured at room temperature by a vibration sample magnetization. Morphological observations indicated a narrow distribution in the particle and homogeneous shape form with mean average particle size around 130 μm<sup>2</sup>
. The results show that an allotropic Co transformation hcp→fcc occurs within the three first hours of milling and contrary to what expected, the Rietveld refinement method reveals the formation of two fcc solid solutions (SS): fcc Co(Ni) and Ni(Co) beside a small amount of the undissolved Co hcp. Thermal measurement, as a function of milling time was carried out to confirm the existence of the hcp phase and to estimate its amount. Magnetic measurement indicated that the 48 h milled powders with a steady state particles size have the highest saturation (105.3 emu/g) and the lowest coercivity (34.5 Oe).</s0>
</fC01>
<fC02 i1="01" i2="3"><s0>001B70E75</s0>
</fC02>
<fC02 i1="02" i2="3"><s0>001B60A46</s0>
</fC02>
<fC03 i1="01" i2="3" l="FRE"><s0>Paramètre cristallin</s0>
<s5>02</s5>
</fC03>
<fC03 i1="01" i2="3" l="ENG"><s0>Lattice parameters</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="3" l="FRE"><s0>Alliage mécanique</s0>
<s5>03</s5>
</fC03>
<fC03 i1="02" i2="3" l="ENG"><s0>Mechanical alloying</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE"><s0>Broyeur satellite</s0>
<s5>04</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG"><s0>Planetary mill</s0>
<s5>04</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA"><s0>Molino rodillos satelite</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE"><s0>Broyeur boulet</s0>
<s5>05</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG"><s0>Ball mill</s0>
<s5>05</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA"><s0>Molino bolas</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="3" l="FRE"><s0>Microscopie électronique balayage</s0>
<s5>06</s5>
</fC03>
<fC03 i1="05" i2="3" l="ENG"><s0>Scanning electron microscopy</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="3" l="FRE"><s0>Diffraction RX</s0>
<s5>07</s5>
</fC03>
<fC03 i1="06" i2="3" l="ENG"><s0>XRD</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="3" l="FRE"><s0>Calorimétrie différentielle balayage</s0>
<s5>08</s5>
</fC03>
<fC03 i1="07" i2="3" l="ENG"><s0>Differential scanning calorimetry</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="3" l="FRE"><s0>Force coercitive</s0>
<s5>09</s5>
</fC03>
<fC03 i1="08" i2="3" l="ENG"><s0>Coercive force</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE"><s0>Aimantation saturation</s0>
<s5>10</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG"><s0>Saturation magnetization</s0>
<s5>10</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA"><s0>Imanación saturación</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="3" l="FRE"><s0>Dimension particule</s0>
<s5>11</s5>
</fC03>
<fC03 i1="10" i2="3" l="ENG"><s0>Particle size</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="X" l="FRE"><s0>Transformation allotropique</s0>
<s5>12</s5>
</fC03>
<fC03 i1="11" i2="X" l="ENG"><s0>Allotropic transformation</s0>
<s5>12</s5>
</fC03>
<fC03 i1="11" i2="X" l="SPA"><s0>Transformación alotrópica</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="FRE"><s0>Relation fabrication propriété</s0>
<s5>13</s5>
</fC03>
<fC03 i1="12" i2="X" l="ENG"><s0>Fabrication property relation</s0>
<s5>13</s5>
</fC03>
<fC03 i1="12" i2="X" l="SPA"><s0>Relación fabricación propiedad</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="3" l="FRE"><s0>Hystérésis magnétique</s0>
<s5>14</s5>
</fC03>
<fC03 i1="13" i2="3" l="ENG"><s0>Magnetic hysteresis</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="X" l="FRE"><s0>Nanocristal</s0>
<s5>15</s5>
</fC03>
<fC03 i1="14" i2="X" l="ENG"><s0>Nanocrystal</s0>
<s5>15</s5>
</fC03>
<fC03 i1="14" i2="X" l="SPA"><s0>Nanocristal</s0>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="3" l="FRE"><s0>Réseau cubique face centrée</s0>
<s5>16</s5>
</fC03>
<fC03 i1="15" i2="3" l="ENG"><s0>FCC lattices</s0>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="3" l="FRE"><s0>Réseau hexagonal compact</s0>
<s5>18</s5>
</fC03>
<fC03 i1="16" i2="3" l="ENG"><s0>HCP lattices</s0>
<s5>18</s5>
</fC03>
<fC03 i1="17" i2="3" l="FRE"><s0>Nickel alliage</s0>
<s5>19</s5>
</fC03>
<fC03 i1="17" i2="3" l="ENG"><s0>Nickel alloys</s0>
<s5>19</s5>
</fC03>
<fC03 i1="18" i2="3" l="FRE"><s0>Cobalt alliage</s0>
<s5>20</s5>
</fC03>
<fC03 i1="18" i2="3" l="ENG"><s0>Cobalt alloys</s0>
<s5>20</s5>
</fC03>
<fC03 i1="19" i2="3" l="FRE"><s0>Métal transition alliage</s0>
<s5>48</s5>
</fC03>
<fC03 i1="19" i2="3" l="ENG"><s0>Transition element alloys</s0>
<s5>48</s5>
</fC03>
<fN21><s1>262</s1>
</fN21>
</pA>
</standard>
<server><NO>PASCAL 11-0386997 INIST</NO>
<ET>Structural and magnetic properties of Co<sub>50</sub>
Ni<sub>50</sub>
 powder mixtures</ET>
<AU>LOUDJANI (N.); BENSEBAA (N.); DEKHIL (L.); ALLEG (S.); SUNOL (J. J.)</AU>
<AF>Laboratoire de Magnétisme et Spectroscopie des solides, Département de Physique, Faculté des Sciences, Université Badji Mokhtar, B.P. 12/23000 Annaba/Algérie (1 aut., 2 aut., 3 aut., 4 aut.); Dep. de Fisica, Universitat de Girona, Campus Montilivi/Girona 17071/Espagne (5 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Journal of magnetism and magnetic materials; ISSN 0304-8853; Coden JMMMDC; Pays-Bas; Da. 2011; Vol. 323; No. 23; Pp. 3063-3070; Bibl. 38 ref.</SO>
<LA>Anglais</LA>
<EA>In the present work, morphological, structural, thermal and magnetic properties of nanocrystalline Co<sub>50</sub>
Ni<sub>50</sub>
 alloy prepared by high energy planetary ball milling have been studied by means of scanning electron microscopy, X-ray diffraction, and differential scanning calorimetry. The coercivity and the saturation magnetization of alloyed powders were measured at room temperature by a vibration sample magnetization. Morphological observations indicated a narrow distribution in the particle and homogeneous shape form with mean average particle size around 130 μm<sup>2</sup>
. The results show that an allotropic Co transformation hcp→fcc occurs within the three first hours of milling and contrary to what expected, the Rietveld refinement method reveals the formation of two fcc solid solutions (SS): fcc Co(Ni) and Ni(Co) beside a small amount of the undissolved Co hcp. Thermal measurement, as a function of milling time was carried out to confirm the existence of the hcp phase and to estimate its amount. Magnetic measurement indicated that the 48 h milled powders with a steady state particles size have the highest saturation (105.3 emu/g) and the lowest coercivity (34.5 Oe).</EA>
<CC>001B70E75; 001B60A46</CC>
<FD>Paramètre cristallin; Alliage mécanique; Broyeur satellite; Broyeur boulet; Microscopie électronique balayage; Diffraction RX; Calorimétrie différentielle balayage; Force coercitive; Aimantation saturation; Dimension particule; Transformation allotropique; Relation fabrication propriété; Hystérésis magnétique; Nanocristal; Réseau cubique face centrée; Réseau hexagonal compact; Nickel alliage; Cobalt alliage; Métal transition alliage</FD>
<ED>Lattice parameters; Mechanical alloying; Planetary mill; Ball mill; Scanning electron microscopy; XRD; Differential scanning calorimetry; Coercive force; Saturation magnetization; Particle size; Allotropic transformation; Fabrication property relation; Magnetic hysteresis; Nanocrystal; FCC lattices; HCP lattices; Nickel alloys; Cobalt alloys; Transition element alloys</ED>
<SD>Molino rodillos satelite; Molino bolas; Imanación saturación; Transformación alotrópica; Relación fabricación propiedad; Nanocristal</SD>
<LO>INIST-17230.354000191167560260</LO>
<ID>11-0386997</ID>
</server>
</inist>
</record>

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Structural and magnetic properties of Co50Ni50 powder mixtures

Structural and magnetic properties of Co50Ni50 powder mixtures

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