Download or read book Structural and Electrical Properties of Some Manganites Compounds written by A. El-Shafaie and published by LAP Lambert Academic Publishing. This book was released on 2014-10-28 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Colossal magnetoresistive (CMR) compounds with the perovskite structure are mainly characterized by a competition between ferromagnetism and paramagnatism, and between a metallic and insulator behavior.Electrical and structure have been studied in La1-xSrxMnOy (x = 0.1,0.15,0.2,0.25,0.3,0.35). The magnetoresistance was determined by measuring the temperature dependence of resistivity under a magnetic field 0.5 T. It was negative for all compositions and significantly influenced by the Sr content and annealing time. The obtained magnetoresitance values may make the materials promising for different applications.

Download or read book Correlation Between Structure Electrical and Magnetic Properties of Some Alkali Oxide Materials written by Riadh Marzouki and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this chapter, the correlation between structure and electrical properties of Na2MP1.5As0.5O7 (MII¬†=¬†Co and Cu) are treated. The structural study shows that the cobalt and copper isotype materials can be crystallized in the tetragonal and monoclinic systems, respectively. The electrical study using impedance spectroscopy technique showed that these mixed diphosphate diarsenates are fast electrical conductors; however, the cobalt material exhibited more conductive property than the copper compound. In addition, the powder perovskite manganites La0.7M0.2M,Äô0.1MnO3 (M¬†=¬†Sr, Ba and M,Äô¬†=¬†Na, Ag and K) have been prepared using the conventional solid-state reaction. The structural, magnetic, and magnetocaloric properties of these perovskite manganites compounds were studied extensively by means of X-ray powder diffraction (XRD) and magnetic measurements. These samples were crystallized in the distorted rhombohedral system with R3c space group. The variation of magnetization (M) vs. temperature (T) reveals that all compounds exhibit a second-order ferromagnetic to paramagnetic phase transition in the vicinity of the Curie temperature (TC). A maximum magnetic entropy change, ŒîSMMax, of 4.07¬†J¬†kg,àí1¬†K,àí1 around 345¬†K was obtained in La0.7Sr0.2Na0.1MnO3 sample upon a magnetic field change of 5¬†T. The ŒîSMMax values of La0.7Ba0.2M,Äô0.1MnO3 are smaller in magnitude compared to La0.7Sr0.2M,Äô0.1MnO3 samples and occur at lower temperatures.

Download or read book The Structural and Electrical Properties of Manganese Telluride written by 鍾榮衍 and published by Open Dissertation Press. This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "The Structural and Electrical Properties of Manganese Telluride" by 鍾榮衍, Wing-hin, Tom, Chung, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. DOI: 10.5353/th_b3120356 Subjects: Manganese-tellurium alloys Semiconductors

Download or read book Nd based Manganites Magnetic and Electrical Properties written by Thomas Joe and published by . This book was released on 2023-10-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Structural and Electrical Properties of Manganese Telluride written by Wing-hin Chung (Tom) and published by . This book was released on 1974 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Physics of Manganites written by T.A. Kaplan and published by Springer Science & Business Media. This book was released on 1999-05-31 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: This series of books, which is published at the rate of about one per year, addresses fundamental problems in materials science. The contents cover a broad range of topics from small clusters of atoms to engineering materials and involves chemistry, physics, materials science and engineering, with length scales ranging from Ångstroms up to millimeters. The emphasis is on basic science rather than on applications. Each book focuses on a single area of current interest and brings together leading experts to give an up to date discussion of their work and the work of others. Each article contains enough references that the interested reader can access the relevant literature. Thanks are given to the Center for Fundamental Materials Research at Michigan State University for supporting this series. M. F. Thorpe, Series Editor E mail: thorpe@pa. msu. edu V PREFACE This book records invited lectures given at the workshop on Physics of Manganites, held at Michigan State University, July 26 29, 1998. Doped manganites are an interesting class of compounds that show both metal insulator and ferromagnetic to paramagnetic transitions at the same temperature. This was discovered in the early 1950s by Jonker and van Santen and basic theoretical ideas were developed by Zener (1951), Anderson and Hasegawa (1955), and deGennes (1960) to explain these transitions and related interesting observations.

Download or read book Alkaline Chemistry and Applications written by Riadh Marzouki and published by BoD – Books on Demand. This book was released on 2022-03-16 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alkaline elements are present in large quantities and in different forms in the Earth’s layers. They are widely used in the manufacture of materials showing interesting physical properties that can be applied in several fields, including catalysis, biology, energy, and others. This book describes different methods of synthesis and treatment of certain alkaline materials and their applications in different fields. It discusses alkaline chemistry in catalysis, biology, polymers and composites, and crystallography.

Download or read book Nanostructured Magnetic Materials and Their Applications written by Donglu Shi and published by Springer. This book was released on 2008-01-11 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: T a a a a a . T a a- a - a a a a a a a a b a a a a a- a .T a a a b a a a a .I b a- a a a a a a ,a a a .O a a a a a a a a a b a a a a a a a . T a , a a a a b a a ? . T a a a a .T a a a , a a a a a a a a a . Ab ba a a b a a a a a a a a . T a a a a a a b a a - .Ma a a a a a a a a a a a , a - , , a a a , a a a , , a , .I a , a , GMR a a a a a a a a a , a a , a RAM .E , a a , , a . a b a - a.T a ab a a a a a a a a a . I , a 21 a a a a a a a a .

Download or read book Colossal Magnetoresistance Charge Ordering and Related Properties of Manganese Oxides written by Chintamani Nagesa Ramachandra Rao and published by World Scientific. This book was released on 1998 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal oxides constitute one of the most amazing classes of materials with a wide range of properties. They exhibit a variety of phenomena, such as ferroelectricity, ferromagnetism and superconductivity. A new aspect of metal oxides -- colossal magnetoresistance exhibited by certain manganese oxides, in particular rare earth manganates of perovskite structure -- has received much attention in the last four years. Some of these oxides show 100% magnetoresistance and have much potential for technological applications. Previously this phenomenon was found only in layered and granular metallic materials. Studies of colossal magnetoresistance have led to the discovery of many other new phenomena and properties such as charge ordering and orbital ordering. In view of the importance of colossal magnetoresistance, charge ordering and related phenomena exhibited by oxides to the physics and chemistry of solid materials, it is necessary and timely to have a book dealing with these topics. This book begins with a review of the subject followed by contributions from a number of experts which cover the present status of the subject.

Download or read book Vibronic Interactions Jahn Teller Effect in Crystals and Molecules written by Michael D. Kaplan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is based mostly on the reports presented at the XVth International lahn-Teller Symposium on Vibronic Interactions in Crystals and Molecules and NATO Advanced Research Workshop Colossal Magnetoresistance and Vibronic Interactions that took place at Boston on August 16-22 of the year 2000. This is the first time the Symposium took place in the USA where recently the giant splash of the attention to the 1 ahn-Teller effect occurred. This tremendous interest to the field all over the world is reflected not only in the numerous publications in many American and European 10urnals, but of the leading scientists from additionally in the Symposium's participation the well known Universities, National Laboratories and industrial companies, which was the largest in the history of the Symposium. The renaissance of the 1ahn-Teller physics is closely related to the three fundamental discoveries in science. The most significant among them is the discovery of high-Tc superconductivity by K. -A. Muller and G. Bednorz, for whom the "1ahn-Teller idea" was the motivation in their search. The result of this search is well known - a wide spectrum of the 1ahn-Teller ion based materials with Tc between 24K and 135K were found. The second discovery is the existence of a new polymorph of carbon - the C60. The microscopic analysis of all physical, chemical and biological properties of the buckyballs is based on 1ahn-Teller type of interactions. The third is colossal magnetoresistance.

Download or read book Colossal Magnetoresistive Manganites written by Tapan Chatterji and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: The physics of transition metal oxides has become a central topic of interest to condensed-matter scientists ever since high temperature superconductivity was discovered in hole-doped cuprates with perovskite-like structures. Although the renewed interest in hole-doped perovskite manganites following the discovery of their colossal magnetoresistance (CMR) properties, began in 1993 about a decade after the discovery of high temperature superconductivity, their first investigation started as early as 1950 and basic theoretical ideas were developed during 1951-1960. Experience in sample preparation and characterization, and in growth of single crystals and epitaxial thin films, gained during the research on high temperature superconductors, and the development of theoretical tools, were very efficiently used in research on CMR manganites. In early nineties it appeared to many condensed matter physicists that although the problem of high temperature superconductivity is a difficult one to solve, a quantitative understanding of CMR phenomena might be well within reach. This book is intended to be an account of the latest developments in the phys ics of CMR manganites. When I planned this book back in 2000, I thought that research on the physics of CMR manganites would be more or less consolidated by the time this would be published. I was obviously very optimistic indeed. We are now in 2003 and we still do not have a quantitative understanding of the central CMR effect. Meanwhile the field has expanded. It is still a very active field of research on both the experimental and theoretical fronts.

Download or read book Defects and Diffusion in Semicondutors 2009 written by David J. Fisher and published by Trans Tech Publications Ltd. This book was released on 2009-01-08 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eleventh volume in the series covering the latest results in the field includes abstracts of papers which have appeared since the publication of Annual Retrospective X (Volume 272). As well as the 295 metals abstracts, the issue includes – in line with the new editorial policy of including original papers on all of the major material groups: “Structural and Electron-Hopping Studies of Pr- and Nd-Substituted La2/3Ba1/3MnO3 Manganites” (H.Abdullah and S.A.Halim), “Recrystallization Annealing of Cold-Rolled 9Cr-1Mo Ferritic Steel Containing Silicon” (M.N.Mungole, M.Surender, R.Balasubramaniam and S.Bhargava), “Quantitative Concept for Morphological Stability Analysis of Solid/Liquid Interface in Rapid Solidification of Dilute Binary Alloys” (M.Draissia), “Studies of the Spin Hamiltonian Parameters for NiX2 and CdX2:Ni2+ (X = Cl, Br) (Z.H.Zhang, S.Y.Wu, X.F.Wang and Y.X.Hu).

Download or read book Perovskite Materials Devices and Integration written by He Tian and published by BoD – Books on Demand. This book was released on 2020-06-10 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Perovskites have attracted great attention in the fields of energy storage, pollutant degradation as well as optoelectronic devices due to their excellent properties. This kind of material can be divided into two categories; inorganic perovskite represented by perovskite oxide and organic-inorganic hybrid perovskite, which have described the recent advancement separately in terms of catalysis and photoelectron applications. This book systematically illustrates the crystal structures, physic-chemical properties, fabrication process, and perovskite-related devices. In a word, perovskite has broad application prospects. However, the current challenges cannot be ignored, such as toxicity and stability.

Download or read book Ferroelectrics Literature Index written by T. F. Connolly and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 713 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on ferroelectricity and ferroelectric materials started in 1920 with the discovery by Valasek that the variation of spontaneous polarization in Rochelle salt with sign and magnitude of an applied electric field traced a complete and reproducible hysteresis loop. Activity in the field was sporadic until 1935, when Busch and co-workers announced the observation of similar behavior in potassium dihydrogen phosphate and related compounds. Progress thereafter continued at a modest level with the undertaking of some theoretical as well as further experimental studies. In 1944, von Hippel and co-workers discovered ferroelectricity in barium titanate. The technological importance of ceramic barium titanate and other perovskites led to an upsurge of interest, with many new ferroelectrics being identified in the following decade. By 1967, about 2000 papers on various aspects of ferroelectricity had been published. The bulk of this widely dispersed literature was concerned with the experimental measurement of dielectric, crystallographic, thermal, electromechanical, elastic, optical, and magnetic properties. A critical and excellently organized cpmpilation based on these data appeared in 1969 with the publica tion of Landolt-Bornstein, Volume 111/3. This superb tabulation gave instant access to the results in the literature on nearly 450 pure substances and solid solutions of ferroelectric and antiferroelectric materials. Continuing interest in ferroelectrics, spurred by the growing importance of electrooptic crystals, resulted in the publication of almost as many additional papers by the end of 1969 as had been surveyed in Landolt-Bornstein.

Download or read book Solid State Physics written by S. L. Chaplot and published by Alpha Science Int'l Ltd.. This book was released on 2002 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume covers the proceedings of the 44th Department of Atomic Engineering (DAE) Solid State Physics Symposium.With contributions of papers from institutions from around the world. Contains 316 research articles, including 28 invited papers, on a wide range of topics of current interest in solid state physics comprising the following categories: Phase Transitions Phonons Soft-condensed Matter Electronic Structure Novel Materials Superconductivity Experimental Techniques and Instrumentation Magnetism Liquids, Glasses and Amorphous Systems Transport Properties Relaxation Studies Semiconductor Physics Surface Science Key Features: Recent developments in Synchrotron Research Photo-electron Spectroscopy Newly emerging superconductors

Download or read book The 13th International Conference on Solid Compounds of Transition Elements written by Riccardo Ferro and published by . This book was released on 2001 with total page 1004 pages. Available in PDF, EPUB and Kindle. Book excerpt: