Download or read book Synthesis and Structure property Relationship of Mullite type Oxides written by Kowsik Ghosh and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structure Processing Properties Relationships in Stoichiometric and Nonstoichiometric Oxides written by Speranta Tanasescu and published by BoD – Books on Demand. This book was released on 2020-11-04 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: The interrelation among composition, microstructure, and properties of stoichiometric and nonstoichiometric compounds is a major field of research for both scientific and technological reasons. As such, this book focuses on metal oxides, which present a large diversity of electrical, magnetic, optical, optoelectronic, thermal, electrochemical, and catalytic properties, making them suitable for a wide range of applications. By bringing together scientific contributions with special emphasis on the interrelations between materials chemistry, processing, microstructures, and properties of stoichiometric and nonstoichiometric metal oxides, this book highlights the importance of tightly integrating high-throughput experiments (including both synthesis and characterization) and efficient and robust theory for the design of advanced materials.

Download or read book Synthesis and Temperature dependent Structure Property Relations of Mullite type Tin II Compounds written by Sarah Maria Bernadette Wittmann and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Within the scope of this dissertation, precursors for O8 mullite-type phases and the phases themselves were synthesized and studied. Due to unforeseen results, an investigation of dolomite-type compounds is included in this work. As the investigation of newly synthesized mullite-type compounds was the main part of this dissertation, the remaining part concerns this structure type. To investigate the influence of the lone electron pair (LEP) of Sn2+ on the structure and the difference to the influence of the LEP of Pb2+, different SnMBO4 (M = Al, Ga, Cr, and V) are synthesized by a conventional solid-state synthesis in sealed quartz tubes (chapter 2 - 5). Rietveld refinement of X-ray powder diffraction data indicates that all compounds crystallize in the orthorhombic space group Pnam, where the edge-sharing MO6 octahedra form an infinite chain along the crystallographic c axis and are interconnected by trigonal planar BO3 groups as well as square pyramidal SnO4 groups. To measure the strength of the stereochemical activity of the LEP, Wang-Liebau eccentricity (WLE) parameter was calculated from the structural data which led to a highly influenced structure. Further investigations were done to consolidate the structural features with Sn Mössbauer, solid state NMR, Raman, IR, and UV/Vis spectroscopic measurements.

Download or read book Mullite written by Hartmut Schneider and published by John Wiley & Sons. This book was released on 2006-05-12 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only book to provide a complete survey -- from the crystallographic fundamentals right up to recent high-tech applications in aerospace technology. Following a general introduction to the topic, the authors go on to cover the crystal chemistry of mullite and related phases, as well as its basic properties, phase equilibria and stability. One whole section is devoted to the synthesis and processing of mullite ceramics, while later ones cover mullite coatings, fibers and matrix composites. For materials scientists, solid state chemists and physicists, crystallographers and mineralogists.

Download or read book 20 Jahrestagung der Deutschen Gesellschaft f r Kristallographie March 2012 Munich Germany written by and published by Walter de Gruyter GmbH & Co KG. This book was released on 2015-09-25 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zeitschrift für Kristallographie. Supplement Volume 32 presents the complete Abstracts of all contributions to the 20th Annual Conference of the German Crystallographic Society in Munich 2012: - Plenary Talks - Microsymposia - Poster Session Supplement Series of Zeitschrift für Kristallographie publishes Proceedings and Abstracts of international conferences on the interdisciplinary field of crystallography.

Download or read book Structure property Relationships of Oxides with Hexagonal AMO3 and Brownmillerite Related Structures written by Peng Jiang and published by . This book was released on 2012 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transition metal oxides exhibit potential in various application fields due to the special d-electrons. Solid state chemistry focuses on discovering the structure-property relationships. The work in this thesis mainly discusses compounds with hexagonal or brownmillerite-type structure and their practical properties. Hexagonal YIn[subscript 1-x]Fe[subscript x]O3 (x = 0-0.3, 0.7-1.0) phases have been prepared and characterized. All phases appear to have the ferroelectric structure known for YInO3. The color of the phases changes from yellow to orange to dark red with increasing Fe content. Magnetic measurements confirm high-spin Fe3 for all phases. Similarly, solid solution YAl[subscript 1-x]Fe[subscript x]O3 (x = 0-0.4, 0.7-1.0) phases were successfully synthesized through the sol-gel method. The Al-rich compounds present paraelectric YAlO3 structure while the Fe-rich side samples exhibit YFeO3 structure. The color of the compounds appear to be yellow with small Fe content and change to brown which has higher Fe content. Brownmillerite-type oxides Ba2In[subscript 2-x]Mn[subscript x]O[subscript 5+x] (x = 0.1-0.7) have been prepared and characterized. Magnetic measurements confirm that Mn in as prepared samples is substituting as Mn5 for all values of x with observed paramagnetic spin-only moments close to values expected for two unpaired electrons. Neutron diffraction structure refinements show Mn5+ occupies tetrahedral sites for orthorhombic (x = 0.1) and tetragonal (x = 0.2) phases. For Mn e"0.3 samples, neutron refinements show the phases are cubic with disordered cations and oxygen vacancies. The colors of the phases change from light yellow (x = 0) to intense turquoise (x =0.1), to green (x = 0.2, 0.3) or dark green (x e"0.4). Solid solution Ba2In[subscript 2-x]Fe[subscript x]O[subscript 5+y] (x = 0.1-1.5) also exhibit brownmillerite-type structure. The color of the compounds appear to be green with small Fe content and change to black with higher Fe content (x e"0.3). Magnetic measurements and Mössbauer spectroscopy conclude the mixed valence of Fe3+/Fe4+ for all the phases. Nonstoichiometry compound YCu0.6Ti0.4O[subscript 3-delta] has been prepared and characterized. Structure study indicates that oxygen vacancy is favored under the synthesis condition. This change in oxygen content was further studied in the Mn-doped system. And the effect of stoichiometric difference in the Mn-doped samples was not as obvious as the initial compound. The disorder in the cation site enhanced the tolerance of the structure in the aspect of oxygen content. The hexagonal phases LnCu0.5Ti0.5O3 (Ln = Y, Tb-Lu) phases were prepared by the traditional solid state reactions. The prepared compounds were reduced at high temperature in the reduction atmosphere created by the H2/N2 gas mixture. Study on the structure and properties changes by reduction was conducted by X-ray diffraction, optical measurement, magnetic measurement and thermalgravimetric analysis. And we observed some evidence of the presence of Cu+ in the reduced phase by these characterization methods. Solid solution YMn[subscript x]Ti[subscript y]O[subscript 3-delta] (y = 0.1-0.4) was successfully prepared through conventional solid state approach. All the samples showed hexagonal structure. But the structure transition from ferroelectric P63cm to paraelectric P63/mmc occurred when Ti amount is higher than 0.2. Based on the neutron diffraction refinement, the lattice expanded in the ab plane but contracted along the c axis direction.

Download or read book Advances in Solid Oxide Fuel Cells VI written by Prabhakar Singh and published by John Wiley & Sons. This book was released on 2010-11-23 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Seventh International Symposium on Solid Oxide Fuel Cells (SOFC): Materials, Science, and Technology was held during the 34th International Conference and Exposition on Advanced Ceramics and Composites in Daytona Beach, FL, January 24 to 29, 2010. This symposium provided an international forum for scientists, engineers, and technologists to discuss and exchange state-of-the-art ideas, information, and technology on various aspects of solid oxide fuel cells. A total of 75 papers were presented in the form of oral and poster presentations, including ten invited lectures, indicating strong interest in the scientifically and technologically important field of solid oxide fuel cells. Authors from eleven countries (China, Denmark, Germany India, Italy, Japan, Russia, South Korea, Taiwan, UK and U.S.A.) participated. The speakers represented universities, industries, and government research laboratories. These proceedings contain contributions on various aspects of solid oxide fuel cells that were discussed at the symposium. Fifteen papers describing the current status of solid oxide fuel cells technology are included in this volume.

Download or read book Bibliography written by Pierre Villars and published by Walter de Gruyter. This book was released on 2012-12-21 with total page 1827 pages. Available in PDF, EPUB and Kindle. Book excerpt: By browsing about 10 000 000 scientific articles of over 200 major journals mainly in a 'cover to cover approach' some 200 000 publications were selected. The extracted data is part of the following fundamental material research fields: crystal structures (S), phase diagrams (also called constitution) (C) and the comprehensive field of intrinsic physical properties (P). This work has been done systematically starting with the literature going back to 1900. The above mentioned research field codes (S, C, P) as well as the chemical systems investigated in each publication were included in the present work. The aim of the Inorganic Substances Bibliography is to provide researchers with a comprehensive compilation of all up to now published scientific publications on inorganic systems in only three handy volumes.

Download or read book Structure property Relationships of Oxide Surfaces and Interfaces written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Magnetic Materials and Magnetic Levitation written by Dipti Ranjan Sahu and published by BoD – Books on Demand. This book was released on 2021-03-24 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic materials are important materials for high-tech areas and technological development, which are being classified not only based on their origin but also by the nature of processing, properties, functions, and applications. This book presents an overview of the different types of new magnetic materials and hybrid structures that exhibit different magnetic phenomena and interesting properties. The reported materials are studied theoretically and experimentally, which are the building blocks of all technological innovations. Topics such as magnetic levitation are given for industrial applications. The chapters of the book provide a key description of magnetic materials. This book is suitable for undergraduate and graduate students and professionals including engineers, scientists, researchers, technicians, and technology managers. This book gives an idea to readers for scientific innovation in this field.

Download or read book Functional Transition Metal Oxides written by Andrew Earnest Smith and published by . This book was released on 2011 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transition metal oxides are an important class of materials for the wide variety optical, electrical, dielectric, magnetic, and thermal properties observed. Their unique structure-property relationships allow for property tuning and often provide insight into the fundamentals of chemistry. The work in this thesis was focused on the design, synthesis and physical property characterization of novel materials with applications in mind. In particular, magneto-electric multiferroics and spintronics are a promising technology for applications in many areas of electronics where either the magnetic or electric properties can be manipulated with electric or magnetic fields respectively. La2MnRhO6 thin films were found to exhibit a change in the defect structure, surface morphology, and magnetic properties for films grown at different oxygen pressures revealing the importance of deposition methods. Bulk ceramic of La2MRhO6 (M = Cr, Mn, Fe, Co, Ni and Cu) were characterized and all were found to be orthorhombic p-type semiconductors. Unique magnetism was found for M = Fe and Cr with both showing magnetic hysteresis at 5K. The Cu analogue is likely to be in a 2+/3+ oxidation state, and showed a favorable power factor up to ~575 K. LaCo[subscript 1-x]Rh[subscript x]O3 compositions were found to exhibit an interesting lattice crossover at x = 0.5. Strong evidence for at least some conversion of Rh3+/Co3+ to Rh4+/Co2+ is found in both structural and electrical transport data. A thermoelectric figure-of-merit (ZT) of about 0.075 has been achieved for LaCo0.5Rh0.5O3 at 775 K YMnO3 is a well known magneto-electric material, and in our study, we have prepared complete or nearly complete solid solutions with YInO3, YAlO3, and YCu0.5Ti0.5O3 systems in order to better understand the structure-property relationships. Our results indicate exciting optical properties as a wide range of blue was observed in the YInO3 solid solution, the intensity of which was critically dependent on the apical bond distances and the crystal field splitting. The YInO3 and YCu0.5Ti0.5O3 systems showed magnetic and magneto-electric suppression for increasing values as expected, but the field dependent capacitance for YInO3 showed a unique improvement and sign swap indicating a strong magneto-electric coupling. We determined the YAlO3 structure to have been improperly reported based on bond valence calculations. Our investigation into the YAlO3-YMnO3 system is underway, however we believe a carbonate group exists within the basal plane resulting in a chemical formula such as YAl[subscript 1-x]Mn[subscript x]O[subscript 3-y](CO3)[subscript y]. For the high-k dielectric CaCu[subscript 3-x]Mn[subscript x]Ti[subscript 4-y]Fe[subscript y]O12 and CaCu3Ti4O[subscript 12-x]F[subscript x], the limits of x, y were determined. A structural study on ceramic samples determined single phase materials, and dielectric measurements showed improvement of properties for fluorinated samples with the dielectric loss lowered while maintaining a high dielectric constant. It is likely that F may be concentrating on important planar defect sites. A colossal decrease in the dielectric constant was observed for Mn-Fe co-doped samples and provides insight into dual site occupations of dopants.

Download or read book Ceramic and Glass Materials written by James F. Shackelford and published by Springer Science & Business Media. This book was released on 2008-04-12 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a concise, up-to-date book that covers a wide range of important ceramic materials used in modern technology. Chapters provide essential information on the nature of these key ceramic raw materials including their structure, properties, processing methods and applications in engineering and technology. Treatment is provided on materials such as alumina, aluminates, Andalusite, kyanite, and sillimanite. The chapter authors are leading experts in the field of ceramic materials. An ideal text for graduate students and practising engineers in ceramic engineering, metallurgy, and materials science and engineering.

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ceramic Nanocomposites written by Rajat Banerjee and published by Elsevier. This book was released on 2013-07-31 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ceramic nanocomposites have been found to have improved hardness, strength, toughness and creep resistance compared to conventional ceramic matrix composites. Ceramic nanocomposites reviews the structure and properties of these nanocomposites as well as manufacturing and applications.Part one looks at the properties of different ceramic nanocomposites, including thermal shock resistance, flame retardancy, magnetic and optical properties as well as failure mechanisms. Part two deals with the different types of ceramic nanocomposites, including the use of ceramic particles in metal matrix composites, carbon nanotube-reinforced glass-ceramic matrix composites, high temperature superconducting ceramic nanocomposites and ceramic particle nanofluids. Part three details the processing of nanocomposites, including the mechanochemical synthesis of metallic–ceramic composite powders, sintering of ultrafine and nanosized ceramic and metallic particles and the surface treatment of carbon nanotubes using plasma technology. Part four explores the applications of ceramic nanocomposites in such areas as energy production and the biomedical field.With its distinguished editors and international team of expert contributors, Ceramic nanocomposites is a technical guide for professionals requiring knowledge of ceramic nanocomposites, and will also offer a deeper understanding of the subject for researchers and engineers within any field dealing with these materials. Reviews the structure and properties of ceramic nanocomposites as well as their manufacturing and applications Examines properties of different ceramic nanocomposites, as well as failure mechanisms Details the processing of nanocomposites and explores the applications of ceramic nanocomposites in areas such as energy production and the biomedical field

Download or read book Engineered Materials Abstracts written by and published by . This book was released on 1994-02 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ceramic Abstracts written by and published by . This book was released on 1998 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nano Glass Ceramics written by Vahak Marghussian and published by William Andrew. This book was released on 2015-01-06 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nano-Glass Ceramics: Processing, Properties and Applications provides comprehensive coverage of synthesis and processing methods, properties and applications of the most important types of nano-glass ceramics, from a unique material science perspective. Emphasis is placed on the experimental and practical aspects of the subject while covering the theoretical and practical aspects and presenting, numerous examples and details of experimental methods. In the discussing the many varied applications of nano-glass ceramics, consideration is given to both, the fields of applications in which the materials are firmly established and the fields where great promise exists for their future exploitation. The methods of investigation adopted by researchers in the various stages of synthesis, nucleation, processing and characterization of glass ceramics are discussed with a focus on the more novel methods and the state of the art in developing nanostructured glass ceramics. Comprehensive coverage of nanostructured glass ceramics with a materials science approach. The first book of this kind Applications-oriented approach, covering current and future applications in numerous fields such as Biomedicine and Electronics Explains the correlations between synthesis parameters, properties and applications guiding R&D researchers and engineers to choose the right material and increase cost-effectiveness