Download or read book Preparation Characterization and Investigations of Electrical and Magnetic Properties of Some Ferrites written by Sagar Shirsath and published by GRIN Verlag. This book was released on 2011-08 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doctoral Thesis / Dissertation from the year 2010 in the subject Physics - Nuclear Physics, Molecular Physics, Solid State Physics, Dr. Babasaheb Ambedkar Marathwada University (-), course: PH.D., language: English, abstract: Wide scope is available to study these aspects of ferrite which at present to our knowledge was not probe by researchers. In relevance to the ever expanding possibilities, and potential that is available with the ferrite materials, the scope of presently undertaken work is designed carefully by selecting suitable ferrite and dopants. A sincere attempt was made to extract fruitful, exhaustive and, systematic information regarding structural, cation distribution, electrical, dielectric and magnetic aspects of the ferrite systems under investigations. In the present study, the properties of nickel ferrites substituted by diamagnetic Zn2+, non-magnetic trivalent In3+ ions and tetravalent Ce4+ ions are studied for various compositions. The properties are investigated with a view to understand the effect of divalent, trivalent and tetravalent substitution in nickel ferrite. The thesis consists of five chapters. Chapter 1 related to Scope, problem statement, theory of magnetism, ferrites, background, motivation and aim of the present work, properties of the samples under investigations, objective and outline of thesis. Chapter 2, 3 and 4 related to results and discussion of structural, electrical and magnetic properties of Ni1-xZnxFe2O4, NiInxFe2-xO4 and Ni1-2xCexFe2O4 ferrite system respectively. Chapter 5 gives the summary, discussion and conclusion on Zn, In and Ce substituted nickel ferrite. On summarizing the results obtained on Ni-Zn, Ni-In and Ni-Ce spinel ferrites it can be concluded that; - The structural properties are found to be varying in all the three systems. The lattice parameter of Ni ferrite systems increases with increasing valancy of dopants (Zn2+, In3+ and Ce4+). - The other prominent parameter of our structural study i.e. p

Download or read book INVESTIGATIONS OF MAGNETIC AND ELECTRICAL PROPERTIES OF SOME FERRITE SYSTEMS PREPARED BY CHEMICAL ROUTE written by Dr. Sanjay Gurav and published by Laxmi Book Publication. This book was released on 2023-09-26 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ferrites are ceramic, homogeneous materials composed of various oxides with iron oxide as their main constituent. Ferrites are a class of ceramic ferromagnetic materials that by definition can be magnetized to produce large magnetic flux densities in response to small applied magnetization forces. Further, ferrites are chemical compounds, ceramic with iron (III) oxide Fe2O3 as their principal components [1]. Ferrites are usually non-conductive ferrimagnetic ceramic compounds derived from iron oxides such as hematite (Fe2O3) or magnetite (Fe3O4) as well as oxides of other metals. Ferrites are, like most other ceramics, hard and brittle. Many of them are magnetic materials and they are used to make permanent magnets, ferrite cores for transformers and in various other applications.

Download or read book Synthesis and Characterization of Ni0 5Co0 5FeAlO4 Ferrite written by Dr. Satish Baburao Shelke and published by Insta Publishing. This book was released on with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has given an overview of the sol-gel auto-combustion preparation method and characterization of Ni0.5Co0.5FeAlO4. This work focused on the structural properties XRD,TGA, SEM, TEM, FTIR, Magnetic Properties, Dielectric Properties were measured.By using the TG curve the exact temperature of formation of ferrite phase was obtained.The properties such as dielectric constant, dielectric loss tangent as a function of frequency and temperature. The addition of aluminium results in increasing the resistivity which decreases the dielectric losses and saturation magnetization. Sintering temperature and synthesis rout plays important role in the fabrication of nano-structured ferrite materials. Attempts are made to synthesis the ferrites by changing their sintering temperature and synthesis route in order to study the structural, electrical and magnetic properties. In the present investigation we have prepared the nanocrystalline powder of Ni-Co-Fe-Al-O ferrite and sintered at four different temperature 5000C, 6000C, 7000C and 8000C. Effect of sintering temperature on the structural, electric and magnetic properties of Ni-Co-Fe-Al-O ferrite nanoparticles were studied.

Download or read book Synthesis and Characterization of Ni0 5Co0 5FeCrO4 Ferrite written by Dr. Satish Baburao Shelke and published by Insta Publishing. This book was released on with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has given an overview of the sol-gel auto-combustion preparation method and characterization of Ni0.5Co0.5FeCrO4. This work focused on the structural properties XRD,TGA, SEM, TEM, FTIR, Magnetic Properties, Dielectric Properties were measured.By using the TG curve the exact temperature of formation of ferrite phase was obtained.The properties such as dielectric constant, dielectric loss tangent as a function of frequency and temperature. The addition of chromium in nickel – cobalt ferrite significantly changes the electrical and magnetic properties. Nickel and cobalt ferrites are inverse ferrites and hence for x £ 1, nickel ferrite shows structure of inverse spinel and for x >1, the inverse structure converted into normal structure. The crystal structure of ferrite, cation distribution, synthesis route, sintering conditions, amount and type of impurity addition decides the electric and magnetic properties of ferrites. Same ferrite with different crystalline size shows different properties. The electrical and magnetic properties even structural properties of ferrites at nano-crystalline phase shows significantly difference than the bulk one. In the present investigation we have presented the results on structural and magnetic properties of Ni0.5Co0.5FeCrO4 sintered at 5000C, 6000C, 7000C and 8000C for 6h.

Download or read book Studies on the Structural Electrical and Magnetic Properties of Some Substituted Spinel Ferrites written by Dr. Satish Baburao Shelke and published by Insta Publishing. This book was released on with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together the most important advances in the field of recent decades. It provides instructors teaching graduate, postgraduate and researchers level for material science courses with a comprehensive and in-depth textbook, that will prepare post graduate students for research or further study as well as reading more advanced and specialized books and research literature in the field. This textbook covers Introduction to Spinel Ferrites, Materials and Methods, Synthesis of Ferrites, while discussing cutting-edge such as Structural Properties, Magnetic Properties, Electrical Properties, Results and Discussion, Experimental Procedure, Results and Discussion, Conclusions

Download or read book An Investigation of the Magnetic and Electrical Properties of Some Magnesium Manganese Ferrites written by John Peters and published by . This book was released on 1958 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Magnetic Ferrites and Related Nanocomposites written by Ali Ghasemi and published by Elsevier. This book was released on 2022-06-16 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a fast-emerging and growing class of magnetic materials, ferrites have generated an increasing amount of interest for providing specific magnetic properties through controlled mixture in composites. The study of magnetic ferrite nanocomposites requires a multidisciplinary approach, involving novel synthesis techniques and an understanding of solid-state physics, electronic engineering, and material science. Magnetic Ferrites and Related Nanocomposites covers recent trends of various types of ferrite nanocomposites and evaluating the mechanisms for interpreting static and dynamic magnetic properties. Sections cover the fundamentals of magnetism, introducing different kinds of ferrites, ferrite characterization techniques, magneto-electric ferrite nanocomposites, exchange spring ferrite nanocomposites, shielding effectiveness and microwave absorption characteristics of ferrite-carbon materials, photocatalytic application of ferrite nanocomposites, and novel synthesis techniques for fabricating ferrite in nanoparticles, bulks, thin films, and nanofiber configurations. This book is an important reference for scientists, researchers, graduate students, and practitioners active in this field in order to broaden their understanding of ferrite nanocomposites and their impact on modern technology. Provides background information regarding various basic magnetic phenomena and related theories, and defines the different natures of magnetic materials Covers a wide range of hard and soft ferrites and related nanocomposites, particularly focusing on the correlation between structural features and magnetic analysis Explores the role of substituted cations on the structural, thermal, magnetic, and microwave characteristics of ferrites and their nanocomposites Discusses the mechanism involved for magnetic properties of major types of ferrite-ferroelectric magneto-electric components, exchange spring ferrite nanocomposites for fabricating next-generation permanent magnets, ferrite carbon nanocomposites for suppressing high-frequency electromagnetic radiation, and ferrite photocatalysts for omitting pollutants from our environment Assesses the major challenges of experimental characterization and novel manufacturing techniques for fabrication of high quality ferrite, in terms of purity, shape, size, and distribution, and the application on an industrial scale

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 Investigations of the Magnetic Properties of Ferrites written by Walter Hirschy Kanzler and published by . This book was released on 1914 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Government Research Reports written by and published by . This book was released on 1963 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1985 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Magnetic Characterization of Rare Earth Doped Barium Ferrites written by Madan Lamichhane and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The (Sr,Ba) M-type hexagonal ferrites are important permanent magnetic materials for industrial applications. These ferrites possess relatively large saturation magnetization, high intrinsic coercivity, and high magnetic anisotropy field as well as excellent chemical stability and corrosion resistivity. Many studies have focused on cationic substitutions and on ionic radius considerations, such as rare-earths to further enhance ferrite magnetic properties. The present study highlights synthesis and characterization of rare-earth doped BaFe12O19 with an intention of improving overall magnetic properties of these ferrites. The effect of partial substitution of Ba+2 ion with RE+3 (RE= La, Pr, Nd, Sm and Gd) on magnetic properties of Ba-Ferrite prepared by solid state reaction using oxalate precursors is assessed in this study.The phase and structural analysis of as prepared sample shows formation of pure hexagonal phase micron size Ba-Ferrite particles. Ba-Ferrites show hard magnetic properties with Hc ̃2.2 kOe and unsaturated Ms of 37 emu/g. However, except for the Pr+3 ion doping overall reduction in magnetic properties have been observed upon rare-earth ion doping. Concomitants reduction in Curie temperature is also observed in rare-earth doped Ba-Ferrites. Effect of replacing Ba+2 ion with dual RE+3 ions (Pr, and La) is on magnetic properties of Ba-Ferrite is also assessed. The change in magnetic properties upon rare-earth ion substitution in Ba-Ferrite is explained on the basis of crystal structure, super exchange interaction, rare earth single ion anisotropy, and iron site occupancy.

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nanofluid Heat and Mass Transfer in Engineering Problems written by Mohsen Sheikholeslami Kandelousi and published by BoD – Books on Demand. This book was released on 2017-03-15 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the present book, nanofluid heat and mass transfer in engineering problems are investigated. The use of additives in the base fluid like water or ethylene glycol is one of the techniques applied to augment heat transfer. Newly, innovative nanometer-sized particles have been dispersed in the base fluid in heat transfer fluids. The fluids containing the solid nanometer-sized particle dispersion are called "nanofluids." At first, nanofluid heat and mass transfer over a stretching sheet are provided with various boundary conditions. Problems faced for simulating nanofluids are reported. Also, thermophysical properties of various nanofluids are presented. Nanofluid flow and heat transfer in the presence of magnetic field are investigated. Furthermore, applications for electrical and biomedical engineering are provided. Besides, applications of nanofluid in internal combustion engine are provided.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 1126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Spinel Nanoferrites written by Surender K. Sharma and published by Springer Nature. This book was released on 2021-10-29 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the complexity of spinel nanoferrites, their synthesis, physio-chemical properties and prospective applications in the area of advanced electronics, microwave devices, biotechnology as well as biomedical sciences. It presents an overview of spinel nanoferrites: synthesis, properties and applications for a wide audience: from beginners and graduate-level students up to advanced specialists in both academic and industrial sectors. There are 15 chapters organized into four main sections. The first section of the book introduces the readers to spinel ferrites and their applications in advanced electronics industry including microwave devices, whereas the second section mainly focus on the synthesis strategy and their physio-chemical properties. The last sections of the book highlight the importance of this class of nanomaterials in the field of biotechnology and biomedical sector with a special chapter on water purification.