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Showing 1 to 14 of 14 for “"Mn3O4"”.
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Imaging magnetic order in magneto-structural phases of Mn3O4
… theoretical and experimental studies recently. Mn3O4 is one such material with a three way interplay between complex lattice geometry, strong spin-lattice coupling and magnetic interactions. Mn3O4 is known to have two distinct phases below the Neel temperature that differ in both structure and …
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Light scattering studies of magnetostructural phases in Mn3O4 and charge density wave melting in ZrTe3
… magnetically ordered phases of magnetodielectric Mn3O4, as well as the pressure-induced charge-ordered to superconducting transition in ZrTe3. In Mn3O4, I examine the differences in magnetic and structural order between two distinct orthorhombic phases which are descended from the paramagnetic …
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Magnetic-field- and pressure-tuned phases in LaxPryCa1−x−yMnO3 and Mn3O4: inelastic light scattering studies and single crystal growth
… and the manganese-based spinel Mn3O4. For this study, Raman (inelastic light) scattering spectroscopy was used as a main experimental technique because Raman scattering can provide detailed information—such as energy, symmetry, and lifetime information—about all the important …
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Development of manganese oxide based nanostructures by wet chemical methods for enhanced energy storage and photocatalytic applications
… In the former part of this thesis, hausmannite Mn3O4 thin films were prepared for the applications of electrochemical capacitors (supercapacitors) by an effective, simple, and cost-effective strategy of electrochemical deposition approach. Various precursor concentrations and deposition …
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Synthesis and characterization of metal oxide nanoparticles
… of MnO resulted only in the synthesis of Mn3O4. Annealing Mn3O4 at 400°C for three hours produced nanoscale Mn5O8 (14nm), a difficult-to-prepare oxide. Using an electrochemical route, 30nm particles of NiO were also synthesized. Thermogravimetric measurements were used to identify the …
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Synthesis and catalytic application of functional transition metal oxides
… prepared, including single oxides such as Co3O4, Mn3O4, α-Fe2O3, CuO and mixed oxides (Co-Fe oxides). Several reactions with direct relevance to air-pollution control were studied, i.e. oxidation of carbon monoxide (CO), propene (C3H6), n-butene (n-C4H8), dimethyl ether (C2H6O) and n-butanol …
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VOC Catalytic Oxidation on Manganese Oxide Catalysts Using Ozone
… of Mn2O3 (+3) to a value approximating that of Mn3O4 (+2⅔). The XRD was consistent with these results as the diffractograms for the supported catalysts of higher manganese oxide loading matched those of a Mn3O4 reference. The reactivity of the silica-supported manganese oxide catalysts in …
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Real-space magnetic imaging of the spinel MnV2O4
… Similar MFM measurements of a related material (Mn3O4) provide evidence that magnetic inhomogeneity is a common feature in the magnetically ordered phases of multiferroic spinel compounds.
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BiMnO3 turinčių kietųjų tirpalų sintezė ir tyrimas /
… % and for (1-x)SrTiO3-xBiMnO3 – 50 %. Secondary Mn3O4 phase was observed for (1-x)SrTiO3-xBiMnO3 (where x=0.4-0.5). Magnetic measurements of (1-x)BaTiO3-xBiMnO3 system demonstrated that at room temperature all samples are paramagnetic. SEM analys showed, that increase in BiMnO3 amount resulted in …
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Application of Chemical Looping for Solar Thermal Energy Storage
… reactions. The CuO/Cu2O, Co3O4/CoO, and Mn2O3/Mn3O4 pairs are promising storage media for thermochemical energy. However, one of the main challenges of thermochemical energy storage is the thermal hysteresis that results from the temperature difference during RedOx reactions. This leads to a …
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Understanding The Physics Of Magnetic Nanoparticles And Their Applications In The Biomedical Field
… of boron can stabilize the spinel structure in Mn3O4 nanoparticles. We have also demonstrated that the dipolar interactions between the magnetic cores can be tuned by introducing non-magnetic nanoparticles. In particular, we studied the magnetic properties of Gd-doped Fe3O4 nanoparticles, a …
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Properties and biomedical applications of magnetic nanoparticles
… temperature spin structures are suppressed in Mn3O4 nanoparticles, which has important implications for nanomagnetic devices. Furthermore, we explored exchange bias effects in Ni-NiO core-shell nanoparticles. Finally, we also performed extensive magnetic studies in nickel metalhydride (NiMH) …
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New Photocatalytic Nanocomposites Layered on Building Substrates for the Abatement of Xenobiotic [PollutantsNuovi Nanocompositi Fotocatalitici Depositati su Cemento per l’Abbattimento di Inquinanti Xenobiotici]
… e meno comuni, come il tetrossido di manganese (Mn3O4), il diossido di cerio (CeO2) e sistemi compositi come TiO2-SiC e Mn3O4-ZrO2, selezionati in base alla loro abbondanza, biocompatibilità, stabilità e capacità di generare portatori di carica per l'attività fotocatalitica. I test …
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Neutron scattering investigations of spinel ferrimagnets: symmetry and magnetoelastic domain wall patterning
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-12-01