On the magnetic compensation of magnesium doped Ni-Cr ferrites
Identifieur interne : 000187 ( Main/Exploration ); précédent : 000186; suivant : 000188On the magnetic compensation of magnesium doped Ni-Cr ferrites
Auteurs : A. Rais [Algérie] ; A. Addou [Algérie] ; M. Ameri [Algérie] ; N. Bouhadouza [Algérie] ; A. Merine [Algérie]Source :
- Applied physics. A, Materials science & processing : (Print) [ 0947-8396 ] ; 2013.
Descripteurs français
- Pascal (Inist)
- Wicri :
English descriptors
- KwdEn :
Abstract
Mg-substituted ferrites NiMgxFe1.1-(2/3)xCr0.9-O4 (0 ≤ x ≤ 0.4) were studied using X-ray diffraction, Mössbauer spectroscopy, and magnetic measurements. X-ray diffraction patterns show that all samples have cubic spinel structure. The temperature-dependent magnetic measurements revealed that the compensation point TK of NiFe1.1-Cr0.9O4 starts to approach the Curie temperature TC as Mg2+ substitution of Fe3+ increases, until the magnetic compensation disappears at composition x = 0.4. The magnetization data at all concentrations are discussed in the light of Néel's molecular field model given the cations distribution obtained using the Mössbauer spectra analysis.
Affiliations:
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Le document en format XML
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Chromium</term>
<term>Compensation</term>
<term>Compensation point</term>
<term>Cubic lattices</term>
<term>Curie point</term>
<term>Doping</term>
<term>Ferrite</term>
<term>Ferrites</term>
<term>Magnesium</term>
<term>Magnetic measurement</term>
<term>Moessbauer effect</term>
<term>Nickel</term>
<term>Spinels</term>
<term>Temperature effects</term>
<term>XRD</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Compensation</term>
<term>Dopage</term>
<term>Diffraction RX</term>
<term>Effet Mössbauer</term>
<term>Effet température</term>
<term>Point compensation</term>
<term>Magnésium</term>
<term>Nickel</term>
<term>Chrome</term>
<term>Ferrites</term>
<term>Ferrite</term>
<term>Mesure magnétique</term>
<term>Réseau cubique</term>
<term>Spinelles</term>
<term>Point Curie</term>
<term>Mg</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Dopage</term>
<term>Magnésium</term>
<term>Nickel</term>
<term>Chrome</term>
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<front><div type="abstract" xml:lang="en">Mg-substituted ferrites NiMg<sub>x</sub>
Fe<sub>1.1-(2/3)x</sub>
Cr<sub>0.9</sub>
-O<sub>4</sub>
(0 ≤ x ≤ 0.4) were studied using X-ray diffraction, Mössbauer spectroscopy, and magnetic measurements. X-ray diffraction patterns show that all samples have cubic spinel structure. The temperature-dependent magnetic measurements revealed that the compensation point T<sub>K</sub>
of NiFe<sub>1.1</sub>
-Cr<sub>0.9</sub>
O<sub>4</sub>
starts to approach the Curie temperature T<sub>C</sub>
as Mg<sup>2+</sup>
substitution of Fe<sup>3+</sup>
increases, until the magnetic compensation disappears at composition x = 0.4. The magnetization data at all concentrations are discussed in the light of Néel's molecular field model given the cations distribution obtained using the Mössbauer spectra analysis.</div>
</front>
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<affiliations><list><country><li>Algérie</li>
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<tree><country name="Algérie"><noRegion><name sortKey="Rais, A" sort="Rais, A" uniqKey="Rais A" first="A." last="Rais">A. Rais</name>
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<name sortKey="Merine, A" sort="Merine, A" uniqKey="Merine A" first="A." last="Merine">A. Merine</name>
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