Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Diffusion Magnetique Resonante Des Rayons X Appliquee A Letude De Nanostructures Magnetiques
Download Diffusion Magnetique Resonante Des Rayons X Appliquee A Letude De Nanostructures Magnetiques full books in PDF, epub, and Kindle. Read online Diffusion Magnetique Resonante Des Rayons X Appliquee A Letude De Nanostructures Magnetiques ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Diffusion magnétique résonante des rayons X appliquée à l'étude de nanostructures magnétiques by : Karine Chesnel
Download or read book Diffusion magnétique résonante des rayons X appliquée à l'étude de nanostructures magnétiques written by Karine Chesnel and published by . This book was released on 2002 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette thèse traite du développement de la diffusion magnétique résonante des rayons X mous (S-XRMS) grâce au rayonnement synchrotron et de son application à l'étude de nano-structures magnétiques. La spécificité de cette technique tient dans la sélectivité chimique, la dépendance avec la polarisation des photons et la possibilité de sonder le matériaux en profondeur. Nous avons étudié d'une part des couches minces d'alliages épitaxiées de FePd d'anisotropie variable, et d'autre part des réseaux de nanolignes gravés sur silicium et recouverts d'une multicouche pulvérisée de Co/Pt. Ces deux systèmes présentent une anisotropie magnéto-cristalline perpendiculaire conduisant à l'existence de domaines magnétiques en rubans ou lignes de taille submicronique (de 100 nm typiquement). Les mesures en détection ponctuelle et en imagerie CCD permettent de balayer l'espace réciproque et donnent accès aux périodicités et corrélations magnétiques latérales, et surtout au profil magnétique en profondeur dans la couche(ex. domaines de fermeture) grâce à l'effet dichroïque. L'évolution du signal XRMS sous champ magnétique in situ permet, dans le cas des réseaux de lignes, de modéliser le processus de retournement de ces lignes en tant que macrospins. Enfin des mesures en lumière cohérente en géométrie de réflexion conduisent à l'obtention de "speckles magnétiques". Ces figures remarquables contiennent des informations sur la topologie magnétique locale réelle, ce qui ouvre la voie vers la reconstruction et l'évolution d'objets magnétiques de très petites dimensions.
Book Synopsis Etude de nanostructures magnétiques par réflectivité magnétique résonante des rayons X by : Nicolas Jaouen
Download or read book Etude de nanostructures magnétiques par réflectivité magnétique résonante des rayons X written by Nicolas Jaouen and published by . This book was released on 2001 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette thèse traite du développement de la réflectivité magnétique résonante des RX polarisés, appliquée à l'étude des profils d'aimantation au sein de couches minces. Cette méthode combine la sensibilité au magnétisme, avec une sélectivité chimique et électronique liée aux choix de l'énergie des photons incidents au voisinage d'un seuil d'absorption, et la sensibilité structurale (sélectivité spatiale) inhérente à une technique qui sonde l'espace réciproque. Un réflectomètre sous ultra- vide, dédié à des mesures dans le domaine des x -mous, a été développé. Les premières expériences sont présentées pour illustrer ses potentialités. Un programme de simulation, basé sur un traitement optique, permet de calculer l'intensité réfléchie pour un état de polarisation du faisceau incident et une orientation de l'aimantation quelconques. L'étude du système W/Fe/W, réalisées dans deux configurations de polarisation et d'aimantation, a permis de le valider et de discuter les effets de rugosités et d'absorption. Ue extension à l'étude de films de nano-particules magnétiques dans une matrice est proposée. Une deuxième partie s'attache à l'étude de la distribution de l'aimantation induite au sein de films de Ce dans des multicouches Ce/Fe. L'analyse de la dépendance en énergie (aux seuils L2 et M4,5 du Ce) de la réflectivité, mesurée sur les pics de Bragg générés par la période chimique, permet de déterminer le profil magnétique des moments d'origine 5d et 4f. Dans des multicouches Ce/Fe, CeLaCe/Fe et LaCeLa/Fe, où le Ce est de type [alpha] (niveaux 4f partiellement délocalisés), une composante antiferromagnétique se superpose à l'ordre magnétique induit par le Fe aux interfaces (continûment décroissant). Elle semble être une propriété intrinsèque du Ce [alpha] à la limite d'une transition vers une phase [gamma]. Dans le système CeH2-[delta]/Fe, une relocalisation des niveaux 4f prend place, le Ce est de type [gamma] et les deux profils d'aimantation présentent une amplitude décroissante depuis l'interface avec le fer.
Book Synopsis Diffusion résonante des rayons X polarisés et couplage magnétique dans les multicouches Co/Cu by : Carlo Spezzani
Download or read book Diffusion résonante des rayons X polarisés et couplage magnétique dans les multicouches Co/Cu written by Carlo Spezzani and published by . This book was released on 2003 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans ce mémoire nous résumons une partie importante de l'activité scientifique conduite au cours du travail de thèse de ces trois dernières années. Il s'agit surtout d'une activité expérimentale centrée sur l'application de la diffusion résonante à l'étude des propriétés magnétiques des multicouches CoCu, systèmes spécialement intéressants, aussi bien du point de vue des applications que de la recherche fondamentale, pour leurs caractéristiques magnétorésistives. Dans le cadre de cette activité, nous avons aussi développé un ensemble expérimental conçu spécialement pour la diffusion magnétique des rayons X et qui présente en même temps les caractéristiques d'un système pour la physique des surfaces. L'objectif principal de ce travail de thèse était de contribuer au développement expérimental de la diffusion résonante des rayons X polarisés, en tant que technique d'analyse spectroscopique, magnétique et structurale. Nous nous somme intéressés à son application à l'étude des multicouches magnétorésistives formées par l'alternance de métaux de transition 3d magnétiques et non magnétiques. Plus particulièrement, la plus grande partie des données concerne les multicouches Co/Cu avec une épaisseur de Cu autour de 20 A, valeur pour laquelle on peut obtenir une forte magnétorésistance (MR) dans des faibles champs magnétiques. Nous avons obtenu une mesure directe du degré de couplage antiferromagnétique (boucles d'hystérésis AF) et de la distribution en taille des domaines en fonction du champ appliqué. Nos mesures ont aussi mis en évidence l'influence de l'histoire magnétique sur le couplage et ses conséquences sur les propriétés de transport.
Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Book Synopsis Multifunctional Oxide Heterostructures by : Evgeny Y. Tsymbal
Download or read book Multifunctional Oxide Heterostructures written by Evgeny Y. Tsymbal and published by OUP Oxford. This book was released on 2012-08-30 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to the rapidly developing field of oxide thin-films and heterostructures. Oxide materials combined with atomic-scale precision in a heterostructure exhibit an abundance of macroscopic physical properties involving the strong coupling between the electronic, spin, and structural degrees of freedom, and the interplay between magnetism, ferroelectricity, and conductivity. Recent advances in thin-film deposition and characterization techniques made possible the experimental realization of such oxide heterostructures, promising novel functionalities and device concepts. The book consists of chapters on some of the key innovations in the field over recent years, including strongly correlated oxide heterostructures, magnetoelectric coupling and multiferroic materials, thermoelectric phenomena, and two-dimensional electron gases at oxide interfaces. The book covers the core principles, describes experimental approaches to fabricate and characterize oxide heterostructures, demonstrates new functional properties of these materials, and provides an overview of novel applications.
Book Synopsis Nanomagnetism and Spintronics by : Teruya Shinjo
Download or read book Nanomagnetism and Spintronics written by Teruya Shinjo and published by Elsevier. This book was released on 2013-10-07 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concise and accessible chapters of Nanomagnetism and Spintronics, Second Edition, cover the most recent research in areas of spin-current generation, spin-calorimetric effect, voltage effects on magnetic properties, spin-injection phenomena, giant magnetoresistance (GMR), and tunnel magnetoresistance (TMR). Spintronics is a cutting-edge area in the field of magnetism that studies the interplay of magnetism and transport phenomena, demonstrating how electrons not only have charge but also spin. This second edition provides the background to understand this novel physical phenomenon and focuses on the most recent developments and research relating to spintronics. This exciting new edition is an essential resource for graduate students, researchers, and professionals in industry who want to understand the concepts of spintronics, and keep up with recent research, all in one volume. Provides a concise, thorough evaluation of current research Surveys the important findings up to 2012 Examines the future of devices and the importance of spin current
Book Synopsis Nanomaterials and Nanochemistry by : C. Bréchignac
Download or read book Nanomaterials and Nanochemistry written by C. Bréchignac and published by Springer Science & Business Media. This book was released on 2008-01-01 with total page 753 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here is a brilliant book that covers the major aspects of nanomaterials production. It integrates the many and varied chemical, material and thermo-dynamical facets of production, offering readers a new and unique approach to the subject. The mechanical, optical, and magnetic characteristics of nanomaterials are also presented in detail. Nanomaterials are a fast developing field of research and this book serves as both a reference work for researchers and a textbook for graduate students.
Book Synopsis Basic Concepts for Simple and Complex Liquids by : Jean-Louis Barrat
Download or read book Basic Concepts for Simple and Complex Liquids written by Jean-Louis Barrat and published by Cambridge University Press. This book was released on 2003-03-27 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting a unified approach, this book focusses on the concepts and theoretical methods that are necessary for an understanding of the physics and chemistry of the fluid state. The authors do not attempt to cover the whole field in an encyclopedic manner. Instead, important ideas are presented in a concise and rigorous style, and illustrated with examples from both simple molecular liquids and more complex soft condensed matter systems such as polymers, colloids, and liquid crystals.
Book Synopsis On the Continuity of the Gaseous and Liquid States by : J. D. Van Der Waals
Download or read book On the Continuity of the Gaseous and Liquid States written by J. D. Van Der Waals and published by Courier Corporation. This book was released on 2004-01-01 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This much-cited thesis by J. D. van der Waals, the recipient of the 1910 Nobel Prize in physics, is accompanied by an introductory essay by J. S. Rowlinson and another work by van der Waals on the theory of liquid mixtures. 1988 edition.
Book Synopsis Organic Solid-State Lasers by : Sébastien Forget
Download or read book Organic Solid-State Lasers written by Sébastien Forget and published by Springer. This book was released on 2013-07-03 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic lasers are broadly tunable coherent sources, potentially compact, convenient and manufactured at low-costs. Appeared in the mid 60’s as solid-state alternatives for liquid dye lasers, they recently gained a new dimension after the demonstration of organic semiconductor lasers in the 90's. More recently, new perspectives appeared at the nanoscale, with organic polariton and surface plasmon lasers. After a brief reminder to laser physics, a first chapter exposes what makes organic solid-state organic lasers specific. The laser architectures used in organic lasers are then reviewed, with a state-of-the-art review of the performances of devices with regard to output power, threshold, lifetime, beam quality etc. A survey of the recent trends in the field is given, highlighting the latest developments with a special focus on the challenges remaining for achieving direct electrical pumping of organic semiconductor lasers. A last chapter covers the applications of organic solid-state lasers.
Book Synopsis Data Storage at the Nanoscale by : Gan Fuxi
Download or read book Data Storage at the Nanoscale written by Gan Fuxi and published by CRC Press. This book was released on 2015-02-09 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the big data era, data storage is one of the cores in the whole information chain, which includes production, transfer, sharing, and finally processing. Over the years, the growth of data volume has been explosive. Today, various storage services need memories with higher density and capacity. Moreover, information storage in the big data applic
Book Synopsis Synthesis of High-Silica Aluminosilicate Zeolites by : J.A. Martens
Download or read book Synthesis of High-Silica Aluminosilicate Zeolites written by J.A. Martens and published by Elsevier. This book was released on 1987-05-01 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of all new high-silica zeolites which have been discovered between 1975 and 1985. The first part presents some 25 proven recipes for the preparation of high-silica zeolites and describes the characteristics of the materials obtained. This will allow bench-scale production of these materials for scientific research. In the second part, high-silica zeolites with solved structure type are discussed. This part classifies many proprietary materials according to known structure types, and describes the rules and parameters which govern the formation of these materials. In the third part, the formation and characteristics of high-silica zeolites with unknown structure type are discussed. The book contains a wealth of information for all those scientists who incorporate the use of high-silica zeolites in their work.
Book Synopsis Principles and Practice of Immunoassay by : Christopher P. Price
Download or read book Principles and Practice of Immunoassay written by Christopher P. Price and published by Springer. This book was released on 1991-06-18 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each chapter of this book aims to explore the basic physical and chemical principles involved in the immunoassay techniques discussed. The book also looks at the optimization and limitations of methodology and concludes with a brief overview of the application of the performance of the technology.
Book Synopsis Flexoelectricity in Liquid Crystals by : Agnes Buka
Download or read book Flexoelectricity in Liquid Crystals written by Agnes Buka and published by World Scientific. This book was released on 2013 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.
Book Synopsis Laser: 50 Years Of Discoveries by : Fabien Bretenaker
Download or read book Laser: 50 Years Of Discoveries written by Fabien Bretenaker and published by World Scientific. This book was released on 2014-10-27 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique book provides an overview of the principle and applications of lasers enriched with numerous illustrations.Being over fifty years old, lasers continue to amaze us. Their performance characteristics are constantly reaching new limits, and the scope of their applications continues to expand. Yet, it took years of effort by teams of physicists to transform the fundamental notions of Einstein into the first experimental beam of laser light. And history is still going on as fundamental research is now triggered by its remarkable properties.This book addresses every aspects of laser light, from its fundamental principles to its industrial applications, at a level particularly suited for high school teachers, students, and anybody curious about science and technology.
Book Synopsis Modern Surface Organometallic Chemistry by : Jean-Marie Basset
Download or read book Modern Surface Organometallic Chemistry written by Jean-Marie Basset and published by John Wiley & Sons. This book was released on 2009-07-10 with total page 725 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering everything from the basics to recent applications, this monograph represents an advanced overview of the field. Edited by internationally acclaimed experts respected throughout the community, the book is clearly divided into sections on fundamental and applied surface organometallic chemistry. Backed by numerous examples from the recent literature, this is a key reference for all chemists.
Book Synopsis Routledge International Handbook of Ignorance Studies by : Matthias Gross
Download or read book Routledge International Handbook of Ignorance Studies written by Matthias Gross and published by Routledge. This book was released on 2015-05-15 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Once treated as the absence of knowledge, ignorance today has become a highly influential topic in its own right, commanding growing attention across the natural and social sciences where a wide range of scholars have begun to explore the social life and political issues involved in the distribution and strategic use of not knowing. The field is growing fast and this handbook reflects this interdisciplinary field of study by drawing contributions from economics, sociology, history, philosophy, cultural studies, anthropology, feminist studies, and related fields in order to serve as a seminal guide to the political, legal and social uses of ignorance in social and political life. Chapter 33 of this book is freely available as a downloadable Open Access PDF under a Creative Commons Attribution-Non Commercial-No Derivatives 4.0 license available here: https://tandfbis.s3-us-west-2.amazonaws.com/rt-files/docs/Open+Access+Chapters/9780415718967_oachapter33.pdf
