NickelMaghrebV1, France, Analysis, bibRecord, 000059

Effect of Ni Doping on the Structural, Magnetic and Magnetocaloric Properties of Pr0.7Ca0.3Mn1-yNiyO3 Manganites

Identifieur interne : 000059 ( France/Analysis ); précédent : 000058; suivant : 000060

Effect of Ni Doping on the Structural, Magnetic and Magnetocaloric Properties of Pr0.7Ca0.3Mn1-yNiyO3 Manganites

Auteurs : A. Selmi [Tunisie] ; W. Cheikhrouhou-Koubaa [Tunisie] ; M. Koubaa [Tunisie] ; A. Cheikhrouhou [France]

Source :

Journal of superconductivity and novel magnetism [ 1557-1939 ] ; 2013.

RBID : Pascal:13-0210675

Descripteurs français

Pascal (Inist)
- Addition nickel, Effet magnétocalorique, Réaction état solide, Haute température, Diffraction RX, Méthode Rietveld, Manganite, Réseau orthorhombique, Groupe espace, Aimantation, Effet champ magnétique, Matériau paramagnétique, Transition magnétique, Point Curie, Dopage.
Wicri :
- topic : Dopage.

English descriptors

KwdEn :
- Curie point, Doping, High temperature, Magnetic field effects, Magnetic transitions, Magnetization, Magnetocaloric effects, Manganites, Nickel additions, Orthorhombic lattices, Paramagnetic materials, Rietveld method, Solid state reaction, Space groups, XRD.

Abstract

In this paper, we report the structural, magnetic, and magnetocaloric properties of Ni-doped Pr_0.7Ca_0.3 Mn_1-yNi_yO₃ (0 ≤ y ≤ 0.1) powder samples. Our compounds were synthesized using the solid state reaction method at high temperature. X-ray diffraction analysis using Rietveld refinement show that all our samples are single phase and crystallize in the orthorhombic structure with the Pnma space group. Magnetization measurements versus temperature in a magnetic applied field of 50 mT reveal that Ni doping leads to a paramagnetic-ferromagnetic transition with a Curie temperature increasing from 106 K for y = 0.02 to 118.5 K for y = 0.1. A large magnetic entropy change |ΔS_M| has been observed in our doped samples with maximum values around their respective Curie temperatures T_C. |ΔS^max_M| is found to be 2 J kg^-1 K^-1, 2.96 J kg^-1 K^-1 and 2.94 J kg^-1 K^-1 for y = 0.02, 0.05, and 0.1, respectively, in a magnetic field change of 5 T. Large relative cooling power (RCP) value of 352.24 J kg^-1 is obtained for Pr_0.7Ca_0.3Mn_0.9Ni_0.05O₃ sample under 5 T.

Affiliations:

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Le document en format XML

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Ca<sub>0.3</sub>
Mn<sub>1-y</sub>
Ni<sub>y</sub>
O<sub>3</sub>
 Manganites</title>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Effect of Ni Doping on the Structural, Magnetic and Magnetocaloric Properties of Pr<sub>0.7</sub>
Ca<sub>0.3</sub>
Mn<sub>1-y</sub>
Ni<sub>y</sub>
O<sub>3</sub>
 Manganites</title>
<author><name sortKey="Selmi, A" sort="Selmi, A" uniqKey="Selmi A" first="A." last="Selmi">A. Selmi</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Physique des Matériaux, Faculté des Sciences de Sfax, Sfax University, B.P. 1171</s1>
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<author><name sortKey="Cheikhrouhou Koubaa, W" sort="Cheikhrouhou Koubaa, W" uniqKey="Cheikhrouhou Koubaa W" first="W." last="Cheikhrouhou-Koubaa">W. Cheikhrouhou-Koubaa</name>
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<sZ>1 aut.</sZ>
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<country>Tunisie</country>
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<author><name sortKey="Koubaa, M" sort="Koubaa, M" uniqKey="Koubaa M" first="M." last="Koubaa">M. Koubaa</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Physique des Matériaux, Faculté des Sciences de Sfax, Sfax University, B.P. 1171</s1>
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<sZ>3 aut.</sZ>
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<wicri:noRegion>3000 Sfax</wicri:noRegion>
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<author><name sortKey="Cheikhrouhou, A" sort="Cheikhrouhou, A" uniqKey="Cheikhrouhou A" first="A." last="Cheikhrouhou">A. Cheikhrouhou</name>
<affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Institut NEEL, B.P. 166</s1>
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<series><title level="j" type="main">Journal of superconductivity and novel magnetism</title>
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<term>Doping</term>
<term>High temperature</term>
<term>Magnetic field effects</term>
<term>Magnetic transitions</term>
<term>Magnetization</term>
<term>Magnetocaloric effects</term>
<term>Manganites</term>
<term>Nickel additions</term>
<term>Orthorhombic lattices</term>
<term>Paramagnetic materials</term>
<term>Rietveld method</term>
<term>Solid state reaction</term>
<term>Space groups</term>
<term>XRD</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Addition nickel</term>
<term>Effet magnétocalorique</term>
<term>Réaction état solide</term>
<term>Haute température</term>
<term>Diffraction RX</term>
<term>Méthode Rietveld</term>
<term>Manganite</term>
<term>Réseau orthorhombique</term>
<term>Groupe espace</term>
<term>Aimantation</term>
<term>Effet champ magnétique</term>
<term>Matériau paramagnétique</term>
<term>Transition magnétique</term>
<term>Point Curie</term>
<term>Dopage</term>
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<front><div type="abstract" xml:lang="en">In this paper, we report the structural, magnetic, and magnetocaloric properties of Ni-doped Pr<sub>0.7</sub>
Ca<sub>0.3</sub>
 Mn<sub>1-y</sub>
Ni<sub>y</sub>
O<sub>3</sub>
 (0 ≤ y ≤ 0.1) powder samples. Our compounds were synthesized using the solid state reaction method at high temperature. X-ray diffraction analysis using Rietveld refinement show that all our samples are single phase and crystallize in the orthorhombic structure with the Pnma space group. Magnetization measurements versus temperature in a magnetic applied field of 50 mT reveal that Ni doping leads to a paramagnetic-ferromagnetic transition with a Curie temperature increasing from 106 K for y = 0.02 to 118.5 K for y = 0.1. A large magnetic entropy change |ΔS<sub>M</sub>
| has been observed in our doped samples with maximum values around their respective Curie temperatures T<sub>C</sub>
. |ΔS<sup>max</sup>
<sub>M</sub>
| is found to be 2 J kg<sup>-1</sup>
 K<sup>-1</sup>
, 2.96 J kg<sup>-1</sup>
 K<sup>-1</sup>
 and 2.94 J kg<sup>-1</sup>
 K<sup>-1</sup>
 for y = 0.02, 0.05, and 0.1, respectively, in a magnetic field change of 5 T. Large relative cooling power (RCP) value of 352.24 J kg<sup>-1</sup>
 is obtained for Pr<sub>0.7</sub>
Ca<sub>0.3</sub>
Mn<sub>0.9</sub>
Ni<sub>0.05</sub>
O<sub>3</sub>
 sample under 5 T.</div>
</front>
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Effect of Ni Doping on the Structural, Magnetic and Magnetocaloric Properties of Pr0.7Ca0.3Mn1-yNiyO3 Manganites

Effect of Ni Doping on the Structural, Magnetic and Magnetocaloric Properties of Pr0.7Ca0.3Mn1-yNiyO3 Manganites

Source :

Descripteurs français

English descriptors

Abstract

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Le document en format XML

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