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Magnetic properties of Zn0.9(Mn0.05,Ni0.05)O nanoparticle: Experimental and theoretical investigation

Identifieur interne : 000274 ( Main/Exploration ); précédent : 000273; suivant : 000275

Magnetic properties of Zn0.9(Mn0.05,Ni0.05)O nanoparticle: Experimental and theoretical investigation

Auteurs : O. Mounkachi [Maroc] ; M. Lakhal [Maroc] ; H. Labrim [Maroc] ; M. Hamedoun [Maroc] ; A. Benyoussef [Maroc] ; A. El Kenz [Maroc] ; M. Loulidi [Maroc] ; M. Bhihi [Maroc]

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RBID : Pascal:12-0169889

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English descriptors

Abstract

The crystalline and magnetic properties of 5% Mn and 5% Ni co-doped nanocrystalline ZnO particles, obtained by the co-precipitation method, are performed. X-ray diffraction data revealed that Zn0.90Mn0.05Ni0.05O crystallizes in the monophasic wurtzite structure. DC magnetization measurement showed that the samples are paramagnetic at room temperature. However, a large increase in the magnetization is observed below 50 K. This behavior, along with the negative value of Weiss constant obtained from the linear fit of magnetic susceptibility data below room temperature, indicates ferrimagnetic behavior. The ferrimagnetic properties observed at low temperature are explained and confirmed from ab-initio calculations using the Korringa-Kohn-Rostoker method combined with the coherent potential approximation.


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<title xml:lang="en" level="a">Magnetic properties of Zn
<sub>0.9</sub>
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<sub>0.05</sub>
,Ni
<sub>0.05</sub>
)O nanoparticle: Experimental and theoretical investigation</title>
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<name sortKey="Bhihi, M" sort="Bhihi, M" uniqKey="Bhihi M" first="M." last="Bhihi">M. Bhihi</name>
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<series>
<title level="j" type="main">Journal of magnetism and magnetic materials</title>
<title level="j" type="abbreviated">J. magn. magn. mater.</title>
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<title level="j" type="main">Journal of magnetism and magnetic materials</title>
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<keywords scheme="KwdEn" xml:lang="en">
<term>Ab initio calculations</term>
<term>CPA calculations</term>
<term>Codoping</term>
<term>Coprecipitation</term>
<term>Ferrimagnetism</term>
<term>KKR calculations</term>
<term>Magnetic properties</term>
<term>Magnetic susceptibility</term>
<term>Magnetization</term>
<term>Manganese additions</term>
<term>Nanocrystal</term>
<term>Nanoparticles</term>
<term>Nickel additions</term>
<term>Semimagnetic semiconductors</term>
<term>Wurtzite structure</term>
<term>XRD</term>
<term>Zinc oxide</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr">
<term>Propriété magnétique</term>
<term>Addition nickel</term>
<term>Codopage</term>
<term>Coprécipitation</term>
<term>Diffraction RX</term>
<term>Aimantation</term>
<term>Susceptibilité magnétique</term>
<term>Ferrimagnétisme</term>
<term>Calcul ab initio</term>
<term>Calcul KKR</term>
<term>Calcul CPA</term>
<term>Addition manganèse</term>
<term>Nanoparticule</term>
<term>Nanocristal</term>
<term>Oxyde de zinc</term>
<term>Structure wurtzite</term>
<term>Semiconducteur semimagnétique</term>
<term>ZnO</term>
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<front>
<div type="abstract" xml:lang="en">The crystalline and magnetic properties of 5% Mn and 5% Ni co-doped nanocrystalline ZnO particles, obtained by the co-precipitation method, are performed. X-ray diffraction data revealed that Zn
<sub>0.90</sub>
Mn
<sub>0.05</sub>
Ni
<sub>0.05</sub>
O crystallizes in the monophasic wurtzite structure. DC magnetization measurement showed that the samples are paramagnetic at room temperature. However, a large increase in the magnetization is observed below 50 K. This behavior, along with the negative value of Weiss constant obtained from the linear fit of magnetic susceptibility data below room temperature, indicates ferrimagnetic behavior. The ferrimagnetic properties observed at low temperature are explained and confirmed from ab-initio calculations using the Korringa-Kohn-Rostoker method combined with the coherent potential approximation.</div>
</front>
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<country>
<li>Maroc</li>
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<name sortKey="Labrim, H" sort="Labrim, H" uniqKey="Labrim H" first="H." last="Labrim">H. Labrim</name>
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