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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Schouten, Jc Jaap
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2011Structural and magnetic properties of sol-gel Co2xNi0.5-x Zn0.5-xFe2)4 thin filmscitations
- 2010Structural investigations and magnetic properties of sol-gel Ni(0.5)Zn(0.5)Fe2O4 thin films for microwave heatingcitations
- 2009Selective hydrogenation of acetylene alcohols over a Pd/TiO2 coating in a capillary microreactor
- 2009Confined palladium colloids in mesoporous frameworks for carbon nanotube growthcitations
- 2009Determination of the Tolman length in the improved Derjaguin-Broekhoff-de Boer theory for capillary condensation of ethanol in mesoporous thin films by ellipsometric porosimetrycitations
- 2009Method for control of the thickness of mesoporous titania films for applications in catalytic microreactors
- 2009Thin catalytic coatings on microreactor walls: a way to make industrial processes more efficient
- 2008Oxidation of organic compounds in a microstructured catalytic reactorcitations
- 2008Microwave-assisted hydrothermal synthesis of zeolite Beta coatings on ALD-modified borosilicate glass for application in microstructured reactorscitations
- 2008Mesoporous silica films as catalyst support for microstructured reactors: preparation and characterizationcitations
- 2008Gold supported on mesoporous titania thin films for application in microstructured reactors in low-temperature water-gas shift reactioncitations
- 2007Method for the in situ preparation of a single layer of zeolite beta crystals on a molybdenum substrate for microreactor applicationscitations
- 2006Preparation and characterization of bimetallic catalysts supported on mesoporous silica filmscitations
- 2005Optimization of anodic oxidation and Cu-Cr oxide catalyst preparation on structured aluminum plates processed by electro discharge machining
- 2005Optimization of anodic oxidation and Cu-Cr oxide catalyst preparation on structured aluminum plates processed by electro discharge machiningcitations
- 2003Intrinsic thiophene hydrodesulfurization kinetics of a sulfided NiMo/SiO2 model catalyst : volcano-type behavior
- 2003Challenging prospects for microstructured reaction architectures. (1). Zeolite coating synthesis and high-throughput experimentation in a microreactor
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article
Structural investigations and magnetic properties of sol-gel Ni(0.5)Zn(0.5)Fe2O4 thin films for microwave heating
Abstract
Nanocrystalline Ni0.5Zn0.5Fe2O4 thin films have been synthesized with various grain sizes by a sol-gel method on polycrystalline silicon substrates. The morphology, magnetic, and microwave absorption properties of the films calcined in the 673–1073 K range were studied with x-ray diffraction, scanning electron microscopy, x-ray photoelectron spectroscopy, atomic force microscopy, vibrating sample magnetometry, and evanescent microwave microscopy. All films were uniform without microcracks. Increasing the calcination temperature from 873 to 1073 K and time from 1 to 3 h resulted in an increase of the grain size from 12 to 27 nm. The saturation and remnant magnetization increased with increasing the grain size, while the coercivity demonstrated a maximum near a critical grain size of 21 nm due to the transition from monodomain to multidomain behavior. The complex permittivity of the Ni–Zn ferrite films was measured in the frequency range of 2–15 GHz. The heating behavior was studied in a multimode microwave cavity at 2.4 GHz. The highest microwave heating rate in the temperature range of 315–355 K was observed in the film close to the critical grain size.