Magnetic properties of mixed Ni-Cu ferrites calculated using mean field approach
Identifieur interne : 000417 ( PascalFrancis/Curation ); précédent : 000416; suivant : 000418Magnetic properties of mixed Ni-Cu ferrites calculated using mean field approach
Auteurs : R. Masrour [Maroc] ; M. Hamedoun [Maroc] ; A. Benyoussef [Maroc] ; E. K. Hlil [France]Source :
- Journal of magnetism and magnetic materials [ 0304-8853 ] ; 2014.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
The magnetic properties of spinel ferrites [Fe3+1-(1-x)yCu2+(1-x)y]A[Ni2+xCu2+(1-x)(1-y)Fe3+1+(1-x)y]BO4 have been studied by the mean field theory (MFT) and high temperature series expansions (HTSEs) combined with the Padé approximants. The critical temperature, the saturation magnetisation (Ms) and the intra-sublattice exchanges interactions (JAA(x,y), JBB(x,y) and JAB(x,y)) are obtained by using a probability distribution law. The critical exponents associate with the magnetic susceptibility have been obtained. The effect of copper doping on the magnetic properties of nickel ferrites has been examined.
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<series><title level="j" type="main">Journal of magnetism and magnetic materials</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Critical exponents</term>
<term>Critical points</term>
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<term>Ferrites spinels</term>
<term>Iron Nickel Oxides Mixed</term>
<term>Magnetic susceptibility</term>
<term>Mean field approximation</term>
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<term>Sous réseau</term>
<term>Interaction échange</term>
<term>Loi probabilité</term>
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<front><div type="abstract" xml:lang="en">The magnetic properties of spinel ferrites [Fe<sup>3+</sup>
<sub>1-(1-x)y</sub>
Cu<sup>2+</sup>
<sub>(1-x)y</sub>
]<sub>A</sub>
[Ni<sup>2+</sup>
<sub>x</sub>
Cu<sup>2+</sup>
<sub>(1-x)(1-y</sub>
)Fe<sup>3+</sup>
<sub>1+(1-x)y</sub>
]<sub>B</sub>
O<sub>4</sub>
have been studied by the mean field theory (MFT) and high temperature series expansions (HTSEs) combined with the Padé approximants. The critical temperature, the saturation magnetisation (M<sub>s</sub>
) and the intra-sublattice exchanges interactions (J<sub>AA</sub>
(x,y), J<sub>BB</sub>
(x,y) and J<sub>AB</sub>
(x,y)) are obtained by using a probability distribution law. The critical exponents associate with the magnetic susceptibility have been obtained. The effect of copper doping on the magnetic properties of nickel ferrites has been examined.</div>
</front>
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<sub>(1-x)y</sub>
]<sub>A</sub>
[Ni<sup>2+</sup>
<sub>x</sub>
Cu<sup>2+</sup>
<sub>(1-x)(1-y</sub>
)Fe<sup>3+</sup>
<sub>1+(1-x)y</sub>
]<sub>B</sub>
O<sub>4</sub>
have been studied by the mean field theory (MFT) and high temperature series expansions (HTSEs) combined with the Padé approximants. The critical temperature, the saturation magnetisation (M<sub>s</sub>
) and the intra-sublattice exchanges interactions (J<sub>AA</sub>
(x,y), J<sub>BB</sub>
(x,y) and J<sub>AB</sub>
(x,y)) are obtained by using a probability distribution law. The critical exponents associate with the magnetic susceptibility have been obtained. The effect of copper doping on the magnetic properties of nickel ferrites has been examined.</s0>
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<s5>13</s5>
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<s5>17</s5>
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<s5>17</s5>
</fC03>
<fC03 i1="12" i2="X" l="FRE"><s0>Fer Nickel Oxyde Mixte</s0>
<s2>NC</s2>
<s2>NA</s2>
<s5>18</s5>
</fC03>
<fC03 i1="12" i2="X" l="ENG"><s0>Iron Nickel Oxides Mixed</s0>
<s2>NC</s2>
<s2>NA</s2>
<s5>18</s5>
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<s2>NA</s2>
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