Academic literature on the topic 'Spinelle'
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Journal articles on the topic "Spinelle"
Rheinboldt, Heinrich. "Konstitutionsformeln der Spinelle." Recueil des Travaux Chimiques des Pays-Bas 51, no. 4 (September 3, 2010): 356–60. http://dx.doi.org/10.1002/recl.19320510408.
Full textVerger, Louisiane, Olivier Dargaud, and Laurent Cormier. "Couleurs et émaux. Des décors de la Manufacture de Sèvres à la réactivité des pigments." Reflets de la physique, no. 63 (October 2019): 26–29. http://dx.doi.org/10.1051/refdp/201963026.
Full textKrutzsch, B., and S. Kemmler-Sack. "Spinelle im System Li1−zCuzRhRu1−xMnxO4." Journal of the Less Common Metals 132, no. 1 (April 1987): 37–42. http://dx.doi.org/10.1016/0022-5088(87)90171-8.
Full textCHEMLA, S., M. SGHYAR, M. RAFIQ, A. LARBOT, and L. COT. "Elaboration de membranes de spinelle de cobalt CoAlOO et de spinelle de manganèse MnAlOO pour l'ultrafiltration." Annales de Chimie Science des Matériaux 25, no. 7 (November 2000): 577–82. http://dx.doi.org/10.1016/s0151-9107(01)80012-x.
Full textFeltz, A., and A. Seidel. "Untersuchungen an elektronenleitenden Oxidsystemen. XXI. Stabile spinelle ZnzNiMn2?zO4 und Vergleich mit Spinellen MgzNiMn2?zO4." Zeitschrift f�r anorganische und allgemeine Chemie 608, no. 2 (February 1992): 166–72. http://dx.doi.org/10.1002/zaac.19926080225.
Full textCHASSAING, I., L. PRESMANES, Ph TAILHADES, A. ROUSSET, and P. MOLLARD. "Propriétés magnétiques de ferrites CoMnxFe2-xO4 (0ࣘxࣘ1) à structure spinelle." Le Journal de Physique IV 02, no. C3 (December 1992): C3–127—C3–131. http://dx.doi.org/10.1051/jp4:1992319.
Full textKleinert, P. "Über die Darstellung kristallisierter Spinelle, besonders Ferrite, mit chemischen Transportreaktionen." Zeitschrift für Chemie 3, no. 9 (September 2, 2010): 353–54. http://dx.doi.org/10.1002/zfch.19630030914.
Full textChassagneux, F., A. Rousset, and J. P. Redoules. "Elaboration et caracterisation de chromites de fer(III) a structure spinelle lacunaire." Journal of Solid State Chemistry 56, no. 1 (January 1985): 74–83. http://dx.doi.org/10.1016/0022-4596(85)90254-3.
Full textSchnick, Wolfgang. "Die ersten Nitrid-Spinelle – neue Synthesewege für binäre Nitride der 4. Hauptgruppe." Angewandte Chemie 111, no. 22 (November 15, 1999): 3511–12. http://dx.doi.org/10.1002/(sici)1521-3757(19991115)111:22<3511::aid-ange3511>3.0.co;2-j.
Full textDiouri, A., L. Ouichou, and A. Boukhari. "Interaction charge-briques réfractaires en magnésie spinelle dans un four industriel à ciment." Journal de Chimie Physique 88 (1991): 2341–46. http://dx.doi.org/10.1051/jcp/1991882341.
Full textDissertations / Theses on the topic "Spinelle"
Cornu, Lucile. "Matériaux X-Chromo-luminescents de type spinelle et elpasolite : relation structure-propriétés." Thesis, Bordeaux, 2014. http://www.theses.fr/2014BORD0082/document.
Full textResearch for luminescent materials sensitive to temperature or UV exposurevariation are increasing. Here we manage to synthesized and characterized materialswhich show such properties.First, spinel structure materials as ZnAl2O4 doped with manganesecompounds exhibit irreversible thermo-chromo-luminescence properties. Thismaterial shows a variation of emission wavelength from red to green with a variationof the thermal history of the sample. These variations are due to a modification of themanganese environment in the structure with the temperature. It was demonstratedthat the temperature range of the luminescence switch can be tuned by themodification of the matrix composition. Secondly, cerium-doped Rb2KInF6compounds with elpasolite structure exhibit reversible photo-chromo-luminescenceproperties. Under UV irradiation, new luminescent species (In+), created by redoxreaction between Ce3+ and In3+ species, and which emits in the red range, can beproduced. We demonstrate the reversibility of the phenomenon by UV irradiation orafter a thermal treatment. The specificity of these properties with this structure andthis composition can be explained by structural consideration: Ce3+ and In3+positioning in the cell allowing electronic exchanges between these ions thanks toorbital overlap
Quentin, Alexis. "Modifications structurales de spinelle sous irradiation." Caen, 2010. http://www.theses.fr/2010CAEN2059.
Full textThis work is devoted to the study of spinel structure materials under radiation. For that purpose, samples of polycrystalline ZnAl2O4 and monocrystalline MgAl2O4 were irradiated by different heavy ions with different energies. Samples of ZnAl2O4 were studied par electron transmission microscopy, and by grazing incidence X-Ray diffraction and Rietveld analysis. Samples of MgAl2O4 were studied by optical spectroscopy. Most of the results concern amorphisation and crystalline structure modification of ZnAl2O4 especially the inversion. We were able to determine a stopping power threshold for amorphisation, between 11 keV/nm and 12 keV/nm, and also the amorphisation process, which is a multiple impacts process. We studied the evolution of the amorphous phase by TEM and showed a nanopatterning phenomenon. Concerning the inversion, we determined that it did happen by a single impact process, and the saturation value did not reach the random cation distribution value. Inversion and amorphisation have different, but close, stopping power threshold. However, amorphisation seems to be conditioned by a predamage of the material which consists in inversion
Yalamac, Emre. "Frittage, cofrittage et maîtrise des microstructures de matériaux à base d'oxydes : zircone, alumine, spinelle, alumine-zircone, spinelle-alumine." Phd thesis, Grenoble INPG, 2010. http://tel.archives-ouvertes.fr/tel-00521852.
Full textYalamac, Emre. "Frittage, cofrittage et maîtrise des microstructures de matériaux à base d'oxydes : zircone, alumine, spinelle, alumine-zircone, spinelle-alumine." Phd thesis, Grenoble INPG, 2010. http://www.theses.fr/2010INPG0059.
Full textDensification and microstructural evolution during co-sintering of alumina (Al2O3) – zirconia (Y-ZrO2) and alumina – spinel (MgAl2O4) co-pressed bi-materials were investigated. Before co-sintering studies of bi-materials, sintering behaviors of the submicron powders of alumina, spinel and zirconia were studied separately by vertical dilatometer. The effects of precoarsening and two-step sintering treatments on the densification and microstructure of spinel ceramics were also investigated. The interface layer development between alumina and spinel during thermal treatment in 1400- 1500°C temperature range were carefully investigated. Crack-free bonds were observed in alumina – spinel bi-materials after compaction by UP+CIP. A spinel interlayer with columnar grains was observed. Growth of this interlayer from spinel toward alumina was found to follow parabolic kinetics. Diffusion couple tests produced the same columnar spinel grains at the interface with the same kinetics as in co-sintering experiments
Mercier, Adrien. "Contribution à l'étude et à la réalisation de composants magnétiques monolithiques réalisés par PECS/SPS et à leurs applications en électronique de puissance." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLN057/document.
Full textThe increase in switching frequency of power supply induces new problems for the components. These components are active or passive, it is necessary to control the losses so that efficiency remains acceptable. The thesis deals with the study and production of a new transformer structure intended to be part of a switching power supply. These transformers are produced using PECS/SPS method, which is a sintering technology. This technology can be sintered ferrite around the primary and secondary windings. It follows that the components are monolithic.A first part presents the state of the art, and magnetism in the matter. It follows a chapter dedicated to the manufacture of magnetic materials used in the thesis : the ferrites.A second part concerns the ferrites produced by the PECS / SPS process. Firstly, the magnetocrystalline anisotropy of these materials is studied, and it is possible to decrease it by varying the chemical composition. In a second stage, other variables such as the permeability or the polarization are measured, always depending on the chemical composition. The main results show that the sintering by PECS / SPS method is more reducing than conventional sintering, which degrades certain properties such as the resistivity of the ferrites. The last chapter is dedicated to the realization of monolithic processors. A detailed manufacturing protocol is presented.A third part shows the operation of the realized transformers. The usual measurements allow identifying self, mutual and leakage inductances. The values of these inductances show that it is better to use components made not as a transformer, but as a coupler. Finally a converter based on a VRM structure is realized. The switching frequency is 2 MHz, the efficiency is greater than 90%, and the power density is 15 kW / liter
Oudrhiri, Hassani Fahd. "Couches minces d'oxydes spinelles et de nanocomposites spinelle-CuO à propriétés semi-conductrices destinées à la réalisation de capteurs de gaz." Toulouse 3, 2009. http://thesesups.ups-tlse.fr/588/.
Full textThis work involves the deposition of single-phase or nanocomposite thin film by RF sputtering for use as materials for gas sensors. As a first step, we studied the influence of deposition conditions on the microstructure of spinel oxides thin films. Electron microscopy, ellipsometry and surface area measurements by the B. E. T. Method made it possible to characterize the films microstructure and to establish a model which describes the arrangement of grains and the microporosity at the nanometer scale. We were able to observe a strong increase of the porosity in the films prepared with deposition conditions favouring collisions between particles and, accordingly, a strong shadowing effect between the grains (high argon pressure and long target-substrate distance). In the second step, the reduction phenomena during the deposition process by RF sputtering from a delafossite CuFeO2 target led to the deposition of nanocomposite CuO/CuxFe3-xO4 thin films. This type of original material combining intimately oxides of "n" and "p" type seems promising for the detection of CO and CO2. We sought to optimize the sensitivity of thin layers of 50 nm thickness on different substrates. A maximum sensitivity of 97% and 60% could be obtained when tested in CO and CO2 at 400 and 250°C, respectively
Ji, Qinqin. "The synthesis of higher alcohols from CO2 hydrogenation with Co, Cu, Fe-based catalysts." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAF023/document.
Full textCO2 is a clean carbon source for the chemical reactions, many researchers have studied the utilization of CO2. Higher alcohols are clean fuel additives. The synthesis of higher alcohols from CO hydrogenation has also been studied by many researchers, but there are few literatures about the synthesis of higher alcohols from CO2 hydrogenation, which is a complex and difficult reaction. The catalysts that used for higher alcohols synthesis need at least two active phases and goodcooperation. In our study, we tested the Co. Cu. Fe spinel-based catalysts and the effect of supports (CNTs and TUD-1) and promoters (K, Na, Cs) to the HAS reaction. We found that catalyst CuFe-precursor-800 is beneficial for the synthesis of C2+ hydrocarbons and higher alcohols. In the CO2 hydrogenation, Co acts as a methanation catalyst rather than acting as a FT catalyst, because of the different reaction mechanism between CO hydrogenation and CO2 hydrogenation. In order to inhibit the formation of huge amount of hydrocarbons, it is better to choose catalysts without Co in the CO2 hydrogenation reaction. Compared the functions of CNTs and TUD-1, we found that CNTs is a perfect support for the synthesis of long-chain products (higher alcohols and C2+ hydrocarbons). The TUD-1 support are more suitable for synthesis of single-carbon products (methane and methanol).The addition of alkalis as promoters does not only lead to increase the conversion of CO2 and H2, but also sharply increased the selectivity to the desired products, higher alcohols. The catalyst 0.5K30CuFeCNTs owns the highest productivities (370.7 g∙kg-1∙h-1) of higher alcohols at 350 °C and 50 bar
Diaz, Sébastien. "Frustration magnétique dans les oxydes de structures spinelle : GeCo204 et GeNi204." Université Joseph Fourier (Grenoble), 2006. http://www.theses.fr/2006GRE10017.
Full textThis study is devoted to the magnetic frustration in the spinel compounds GeCo204 and GeNi204. The first chapter is an introduction to magnetic frustration and the crystallographic structure ofthese spinels. The second chapter describes the differen experimental techniques used with more details for the magnetization measurement setup using a torque method developped during this work. Knowing the various electronic exchange paths and the Anderson, Goodenough, Kanamori rules, we have determined the dominating magnetic interactions responsible for the long range order (Appendix A and B). They are consistent with the experimental results obtained using magnetization measurements under high magnetic fields, X rays and neutrons diffraction measurements, and EXAFS measurements (third chapter). A mean field modelisation, coupled with Monte Carlo simulations, can explain these experimental results and allows us to point out the magnetic frustration taking place in both compounds. We have demonstrated that the long range magnetic order lifts partially this frustration and that any model built to describe the magnetic properties of these compounds should inc1ude magnetic interactions between far away neighbours, which are often neglected
Beclin, Franck. "Étude mécanique et microstructurale de la déformation superplastique du spinelle MgAI2O4." Lille 1, 1995. http://www.theses.fr/1995LIL10050.
Full textRousse, Gwenaëlle. "Ordre de charges, magnetisme et electrochimie du spinelle limn 2o 4." Paris 11, 2000. http://www.theses.fr/2000PA112186.
Full textBooks on the topic "Spinelle"
Spinellē, Kalliopē D. Timētikos tomos Kalliopēs D. Spinellē: Enklēmatologikes diepistēmonikes prosengiseis = Essays in honour of Professor C.D. Spinellis : interdisciplinary criminological pathways. Athēna: Ant. N. Sakkoula, 2010.
Find full textMolnár, Anna. Altiero Spinelli, egy európai föderalista. Budapest: Gondolat Kiadó, 2011.
Find full textBresciani, Aristide. Spinello di Luca detto Aretino. Florence]: Edizioni Polistampa, 2021.
Find full textWijn, H. P. J., ed. Oxy-Spinels. Berlin/Heidelberg: Springer-Verlag, 1991. http://dx.doi.org/10.1007/b41057.
Full textBook chapters on the topic "Spinelle"
Akaogi, Masaki. "Olivine–Modified Spinel–Spinel Transitions." In High-Pressure Silicates and Oxides, 71–91. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-6363-6_5.
Full textMarcheschi, Daniela. "David Sassoli: Europa, Europa!" In Libere carte, 111–13. Florence: Firenze University Press, 2023. http://dx.doi.org/10.36253/979-12-215-0100-1.12.
Full textMarcheschi, Daniela. "David Sassoli: Europa, Europa!" In Libere carte, 111–13. Florence: Firenze University Press, 2023. http://dx.doi.org/10.36253/979-12-215-0010-3.12.
Full textChakraborty, Akshoy Kumar. "Spinel Phase." In Phase Transformation of Kaolinite Clay, 207–34. New Delhi: Springer India, 2013. http://dx.doi.org/10.1007/978-81-322-1154-9_20.
Full textGhose, Naresh Chandra, Nilanjan Chatterjee, and Fareeduddin. "Spinel Peridotite." In A Petrographic Atlas of Ophiolite, 91–98. New Delhi: Springer India, 2013. http://dx.doi.org/10.1007/978-81-322-1569-1_8.
Full textFederman, David. "Pink Spinel." In Modern Jeweler’s Consumer Guide to Colored Gemstones, 214–17. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-6488-7_52.
Full textCastroviejo, Ricardo. "Spinel (spn)." In A Practical Guide to Ore Microscopy—Volume 1, 697–704. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-12654-3_115.
Full textBurgess, Michael. "Altiero Spinelli, Federalism and the EUT." In European Union: The European Community in Search of a Future, 174–85. London: Palgrave Macmillan UK, 1986. http://dx.doi.org/10.1007/978-1-349-08197-4_9.
Full textValente, Cecilia, Carola D’alessandro, and David Ramiro Troitiño. "Altiero Spinelli: Federalism in the European Integration." In The European Union and its Political Leaders, 141–58. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-96662-1_14.
Full textBader, Peter, Hermann Kreyenberg, and Gert Ossenkoppele. "Monitoring Measurable Residual Disease in ALL and AML." In The EBMT Handbook, 513–21. Cham: Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-44080-9_57.
Full textConference papers on the topic "Spinelle"
Matyáš, Josef, Jaroslav Kloužek, Lubomír Němec, and Miroslav Trochta. "Spinel Settling in HLW Melters." In ASME 2001 8th International Conference on Radioactive Waste Management and Environmental Remediation. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/icem2001-1317.
Full textPatterson, Mark, Jenni E. Caiazza, and Donald W. Roy. "Transparent spinel development." In International Symposium on Optical Science and Technology, edited by Alexander J. Marker III and Eugene G. Arthurs. SPIE, 2000. http://dx.doi.org/10.1117/12.405305.
Full textTan, Taide, and Yitung Chen. "Formation and Protection of Fe-Cr Oxide Spinel During the Oxidation Process of Stainless Steels in LBE Environment." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12899.
Full textHrma, Pavel, and Jesse Alton. "Dissolution and Growth of Spinel Crystals in a High-Level Waste Glass." In ASME 2001 8th International Conference on Radioactive Waste Management and Environmental Remediation. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/icem2001-1323.
Full textMika, Martin, Milan Patek, Jaroslav Maixner, Simona Randakova, and Pavel Hrma. "The Effect of Temperature and Composition on Spinel Concentration and Crystal Size in High-Level Waste Glass." In ASME 2001 8th International Conference on Radioactive Waste Management and Environmental Remediation. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/icem2001-1324.
Full textAllendorf, Mark D., Richard B. Diver, James E. Miller, and Nathan P. Siegel. "Thermodynamic Analysis of Mixed-Metal Ferrites for Hydrogen Production by Two-Step Water Splitting." In ASME 2006 International Solar Energy Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/isec2006-99114.
Full textAjayi, Ayomide, Fred Davis, and Elizabeth Cottrell. "Spinel-melt Fe3+ partition coefficient increases with spinel Cr#." In Goldschmidt2023. France: European Association of Geochemistry, 2023. http://dx.doi.org/10.7185/gold2023.19954.
Full textGoldman, Lee M., Mark Smith, Mohan Ramisetty, Santosh Jha, and Suri Sastri. "Conformal ALON and spinel windows." In Window and Dome Technologies and Materials XVI, edited by W. Howard Poisl. SPIE, 2019. http://dx.doi.org/10.1117/12.2518902.
Full textЗінченко, І. М., А. П. Чернов, І. В. Пап, І. С. Трегуб, and В. В. Халімендик. "Перспективи нафтогазоносності площі «Spinel», Австралія." In 14th EAGE International Conference on Geoinformatics - Theoretical and Applied Aspects. Netherlands: EAGE Publications BV, 2015. http://dx.doi.org/10.3997/2214-4609.201412384.
Full textRoy, Donald W. "Spinel: where did it go?" In Optical Science, Engineering and Instrumentation '97, edited by H. Philip Stahl. SPIE, 1997. http://dx.doi.org/10.1117/12.279126.
Full textReports on the topic "Spinelle"
Wouter Montfrooij. designer phase transitions in lithium-based spinels. Office of Scientific and Technical Information (OSTI), September 2011. http://dx.doi.org/10.2172/1042954.
Full textS.E. Ziemniak and R.A. Castelli. Immiscibility in the Fe3O4-FeCr2O4 Spinel Binary. Office of Scientific and Technical Information (OSTI), March 2003. http://dx.doi.org/10.2172/821371.
Full textHarris, Donovan. Subsurface Optical Microscopy of Coarse Grain Spinels. Phase 1. Fort Belvoir, VA: Defense Technical Information Center, December 2013. http://dx.doi.org/10.21236/ada593527.
Full textAggarwal, Ishwar, Shyam Bayya, Guillermo Villaiobos, Woohong Kim, Jasbinder Sanghera, David Reicher, Stan Peplinski, and Al Ogolza. Spinel as Exit Aperture Window for HEL Systems. Fort Belvoir, VA: Defense Technical Information Center, November 2008. http://dx.doi.org/10.21236/ada494870.
Full textSickafus, K. E., A. C. Larson, and N. Yu. Cation disorder in high-dose, neutron-irradiated spinel. Office of Scientific and Technical Information (OSTI), April 1995. http://dx.doi.org/10.2172/114947.
Full textLi, Z., S. K. Chan, and F. A. Garner. Elastic stability of high dose neutron irradiated spinel. Office of Scientific and Technical Information (OSTI), April 1995. http://dx.doi.org/10.2172/114948.
Full textSickafus, K. E., A. C. Larson, N. Yu, M. Nastasi, G. W. Hollenberg, F. A. Garner, and R. C. Bradt. Cation disorder in high dose neutron irradiated spinel. Office of Scientific and Technical Information (OSTI), June 1994. http://dx.doi.org/10.2172/10157848.
Full textHrma, Pavel R., Lubomir Nemec, and Petr Schill. Modeling of Spinel Settling in Waste Glass Melter. Office of Scientific and Technical Information (OSTI), June 1999. http://dx.doi.org/10.2172/833300.
Full textHrma, Pavel, Petr Schill, Lubomir Nemec, Jaroslav Klouzek, Mika Martin, and Jiri Brada. Modeling of Spinel Settling in Waste Glass Melter. Office of Scientific and Technical Information (OSTI), June 2000. http://dx.doi.org/10.2172/833301.
Full textSickafus, K. E., A. C. Larson, N. Yu, M. Nastasi, G. W. Hollenberg, F. A. Garner, and R. C. Bradt. Cation disorder in high-dose, neutron-irradiated spinel. Office of Scientific and Technical Information (OSTI), August 1994. http://dx.doi.org/10.2172/10182726.
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