NickelMaghrebV1, Main, Exploration, bibRecord, 000414

Nanocrystalline Ni0.8Zn0.2Fe2O4 films prepared by spray deposition from polyol-mediated sol: Microstructural and magnetic characterization

Identifieur interne : 000414 ( Main/Exploration ); précédent : 000413; suivant : 000415

Nanocrystalline Ni0.8Zn0.2Fe2O4 films prepared by spray deposition from polyol-mediated sol: Microstructural and magnetic characterization

Auteurs : Z. Beji [France, Tunisie] ; L. S. Smiri [Tunisie] ; M.-J. Vaulay [France] ; F. Herbst [France] ; S. Ammar [France] ; F. Fievet [France]

Source :

Thin solid films [ 0040-6090 ] ; 2010.

RBID : Pascal:10-0168373

Descripteurs français

Pascal (Inist)
- Nanostructure, Nanocristal, Couche mince, Microstructure, Propriété magnétique, Diffraction RX, Microscopie électronique balayage, Mesure magnétique, Interférence, Nanoparticule, Nanomatériau, Effet contrainte, Hystérésis, Joint grain, Nickel, Ferrites, Défaut cristallin, Aimantation saturation, Superparamagnétisme, Polyol, Substrat verre, 8107, 6855J.
Wicri :
- topic : Nickel.

English descriptors

KwdEn :
- Crystal defects, Ferrites, Grain boundaries, Hysteresis, Interference, Magnetic measurement, Magnetic properties, Microstructure, Nanocrystal, Nanoparticles, Nanostructured materials, Nanostructures, Nickel, Saturation magnetization, Scanning electron microscopy, Stress effects, Superparamagnetism, Thin films, XRD.

Abstract

Nanocrystalline films were directly prepared by spray deposition of a preformed polyol-based Ni_0.8Zn_0.2Fe₂O₄ sol on a moderately heated glass substrate. The microstructural and magnetic properties of these films are investigated by X-ray diffraction, scanning electron microscopy and magnetic measurements on a Super Quanducting Interference Devices magnetometer. They are compared with those of nanoparticles precipitated from the sol, and with those of film subsequently annealed in air at 400 °C. The films and the powder exhibit superparamagnetic behaviour with a blocking temperature which increases from the powder to the as-produced film to the annealed film, in agreement with increasing stress and/or crystal size. They are ferrimagnetic at low temperature with a hysteresis feature strongly dependent on the synthesis conditions.The stresses induced in the film upon deposition undoubtedly correlate with a large grain boundaries volume which contributes to the H_c, the coercitive field, increase and M_sat, the saturation magnetization, decrease.

Affiliations:

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Le document en format XML

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Zn<sub>0.2</sub>
Fe<sub>2</sub>
O<sub>4</sub>
 films prepared by spray deposition from polyol-mediated sol: Microstructural and magnetic characterization</title>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Nanocrystalline Ni<sub>0.8</sub>
Zn<sub>0.2</sub>
Fe<sub>2</sub>
O<sub>4</sub>
 films prepared by spray deposition from polyol-mediated sol: Microstructural and magnetic characterization</title>
<author><name sortKey="Beji, Z" sort="Beji, Z" uniqKey="Beji Z" first="Z." last="Beji">Z. Beji</name>
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<series><title level="j" type="main">Thin solid films</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Crystal defects</term>
<term>Ferrites</term>
<term>Grain boundaries</term>
<term>Hysteresis</term>
<term>Interference</term>
<term>Magnetic measurement</term>
<term>Magnetic properties</term>
<term>Microstructure</term>
<term>Nanocrystal</term>
<term>Nanoparticles</term>
<term>Nanostructured materials</term>
<term>Nanostructures</term>
<term>Nickel</term>
<term>Saturation magnetization</term>
<term>Scanning electron microscopy</term>
<term>Stress effects</term>
<term>Superparamagnetism</term>
<term>Thin films</term>
<term>XRD</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Nanostructure</term>
<term>Nanocristal</term>
<term>Couche mince</term>
<term>Microstructure</term>
<term>Propriété magnétique</term>
<term>Diffraction RX</term>
<term>Microscopie électronique balayage</term>
<term>Mesure magnétique</term>
<term>Interférence</term>
<term>Nanoparticule</term>
<term>Nanomatériau</term>
<term>Effet contrainte</term>
<term>Hystérésis</term>
<term>Joint grain</term>
<term>Nickel</term>
<term>Ferrites</term>
<term>Défaut cristallin</term>
<term>Aimantation saturation</term>
<term>Superparamagnétisme</term>
<term>Polyol</term>
<term>Substrat verre</term>
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<front><div type="abstract" xml:lang="en">Nanocrystalline films were directly prepared by spray deposition of a preformed polyol-based Ni<sub>0.8</sub>
Zn<sub>0.2</sub>
Fe<sub>2</sub>
O<sub>4</sub>
 sol on a moderately heated glass substrate. The microstructural and magnetic properties of these films are investigated by X-ray diffraction, scanning electron microscopy and magnetic measurements on a Super Quanducting Interference Devices magnetometer. They are compared with those of nanoparticles precipitated from the sol, and with those of film subsequently annealed in air at 400 °C. The films and the powder exhibit superparamagnetic behaviour with a blocking temperature which increases from the powder to the as-produced film to the annealed film, in agreement with increasing stress and/or crystal size. They are ferrimagnetic at low temperature with a hysteresis feature strongly dependent on the synthesis conditions.The stresses induced in the film upon deposition undoubtedly correlate with a large grain boundaries volume which contributes to the H<sub>c</sub>
, the coercitive field, increase and M<sub>sat</sub>
, the saturation magnetization, decrease.</div>
</front>
</TEI>
<affiliations><list><country><li>France</li>
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<name sortKey="Fievet, F" sort="Fievet, F" uniqKey="Fievet F" first="F." last="Fievet">F. Fievet</name>
<name sortKey="Herbst, F" sort="Herbst, F" uniqKey="Herbst F" first="F." last="Herbst">F. Herbst</name>
<name sortKey="Vaulay, M J" sort="Vaulay, M J" uniqKey="Vaulay M" first="M.-J." last="Vaulay">M.-J. Vaulay</name>
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</noRegion>
<name sortKey="Smiri, L S" sort="Smiri, L S" uniqKey="Smiri L" first="L. S." last="Smiri">L. S. Smiri</name>
</country>
</tree>
</affiliations>
</record>

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Nanocrystalline Ni0.8Zn0.2Fe2O4 films prepared by spray deposition from polyol-mediated sol: Microstructural and magnetic characterization

Nanocrystalline Ni0.8Zn0.2Fe2O4 films prepared by spray deposition from polyol-mediated sol: Microstructural and magnetic characterization

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri