RELAXATION DANS LES VERRES ISOLANTS ET SEMICONDUCTEURS PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download RELAXATION DANS LES VERRES ISOLANTS ET SEMICONDUCTEURS PDF full book. Access full book title RELAXATION DANS LES VERRES ISOLANTS ET SEMICONDUCTEURS by TOURIA.. BOUHACINA. Download full books in PDF and EPUB format.
Author: TOURIA.. BOUHACINA
Publisher:
ISBN:
Category :
Languages : fr
Pages :
Get Book Here
Book Description
MALGRE L'APPORT DE NOMBREUSES TECHNIQUES A LA CONNAISSANCE DE L'ETAT VITREUX, IL RESTE ENCORE BEAUCOUP A FAIRE POUR EXPLIQUER CERTAINES PROPRIETES DES VERRES; LES PHENOMENES DE RELAXATION SONT UN EXEMPLE DE CELLES-CI ET LE TRAVAIL PRESENTE DANS CETTE THESE, QUI PORTE ESSENTIELLEMENT SUR LA COMPREHENSION DES VARIATIONS THERMIQUES DES TEMPS DE RELAXATION SPIN-RESEAU A L'AIDE DES THEORIES LES PLUS RECENTES, S'INSCRIT DANS CE CONTEXTE. LES ECHANTILLONS ETUDIES SONT DES VERRES ISOLANTS SILICATES DOPES AVEC L'OXYDE DE FER ET DES VERRES SEMICONDUCTEURS VANADATE DE BARYUM DOPES AVEC L'OXYDE DE FER. DANS LA PREMIERE PARTIE L'AUTEUR A DETERMINE LA CONCENTRATION DES IONS FERRIQUES SUR LES SITES TETRAEDRIQUES ET OCTAEDRIQUES ET ETUDIE L'EVOLUTION DU RAPPORT DE LEUR CONCENTRATION EN FONCTION DE LA TEMPERATURE ET DE LA CONCENTRATION EN FER TOTALE. DANS LA DEUXIEME PARTIE L'AUTEUR A ETUDIE LES MECANISMES DE RELAXATION DANS DES VERRES ISOLANTS ET SEMICONDUCTEURS PAR UNE METHODE ORIGINALE DITE METHODE DE MODULATION, BIEN ADAPTEE AUX VALEURS COURTES DU TEMPS DE RELAXATION SPIN RESEAU ET QUI CONSISTE A DETECTER LA DERIVEE DE LA COMPOSANTE LONGITUDINALE DE L'AIMANTATION. L'AUTEUR A PU METTRE EN EVIDENCE POUR LA PREMIERE FOIS UN MECANISME SPIN-FRACTON DANS DES VERRES SEMICONDUCTEURS FORTEMENT DOPES EN OXYDE DE FER. DANS LES ECHANTILLONS PLUS CONDUCTEURS, LA CONDUCTION ELECTRIQUE PLUS INTENSE, OCULTE COMPLETEMENT LA RELAXATION SPIN-FRACTON ET LAISSE APPARAITRE DE L'ECHANGE
Author: TOURIA.. BOUHACINA
Publisher:
ISBN:
Category :
Languages : fr
Pages :
Get Book Here
Book Description
MALGRE L'APPORT DE NOMBREUSES TECHNIQUES A LA CONNAISSANCE DE L'ETAT VITREUX, IL RESTE ENCORE BEAUCOUP A FAIRE POUR EXPLIQUER CERTAINES PROPRIETES DES VERRES; LES PHENOMENES DE RELAXATION SONT UN EXEMPLE DE CELLES-CI ET LE TRAVAIL PRESENTE DANS CETTE THESE, QUI PORTE ESSENTIELLEMENT SUR LA COMPREHENSION DES VARIATIONS THERMIQUES DES TEMPS DE RELAXATION SPIN-RESEAU A L'AIDE DES THEORIES LES PLUS RECENTES, S'INSCRIT DANS CE CONTEXTE. LES ECHANTILLONS ETUDIES SONT DES VERRES ISOLANTS SILICATES DOPES AVEC L'OXYDE DE FER ET DES VERRES SEMICONDUCTEURS VANADATE DE BARYUM DOPES AVEC L'OXYDE DE FER. DANS LA PREMIERE PARTIE L'AUTEUR A DETERMINE LA CONCENTRATION DES IONS FERRIQUES SUR LES SITES TETRAEDRIQUES ET OCTAEDRIQUES ET ETUDIE L'EVOLUTION DU RAPPORT DE LEUR CONCENTRATION EN FONCTION DE LA TEMPERATURE ET DE LA CONCENTRATION EN FER TOTALE. DANS LA DEUXIEME PARTIE L'AUTEUR A ETUDIE LES MECANISMES DE RELAXATION DANS DES VERRES ISOLANTS ET SEMICONDUCTEURS PAR UNE METHODE ORIGINALE DITE METHODE DE MODULATION, BIEN ADAPTEE AUX VALEURS COURTES DU TEMPS DE RELAXATION SPIN RESEAU ET QUI CONSISTE A DETECTER LA DERIVEE DE LA COMPOSANTE LONGITUDINALE DE L'AIMANTATION. L'AUTEUR A PU METTRE EN EVIDENCE POUR LA PREMIERE FOIS UN MECANISME SPIN-FRACTON DANS DES VERRES SEMICONDUCTEURS FORTEMENT DOPES EN OXYDE DE FER. DANS LES ECHANTILLONS PLUS CONDUCTEURS, LA CONDUCTION ELECTRIQUE PLUS INTENSE, OCULTE COMPLETEMENT LA RELAXATION SPIN-FRACTON ET LAISSE APPARAITRE DE L'ECHANGE
Author:
Publisher:
ISBN:
Category : Magnetic semiconductors
Languages : en
Pages : 404
Get Book Here
Book Description
Author: Ahmed Belasri
Publisher: Springer Nature
ISBN: 9811554447
Category : Technology & Engineering
Languages : en
Pages : 659
Get Book Here
Book Description
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.
Author: David Pallmann
Publisher: John Wiley & Sons
ISBN: 0471272035
Category : Computers
Languages : en
Pages : 690
Get Book Here
Book Description
CD-ROM contains: Scripts for tutorials in text.
Author: Ashutosh Tiwari
Publisher: John Wiley & Sons
ISBN: 1119242754
Category : Technology & Engineering
Languages : en
Pages : 528
Get Book Here
Book Description
Advanced Material Interfaces is a state-of-the-art look at innovative methodologies and strategies adopted for interfaces and their applications. The 13 chapters are written by eminent researchers not only elaborate complex interfaces fashioned of solids, liquids, and gases, but also ensures cross-disciplinary mixture and blends of physics, chemistry, materials science, engineering and life sciences. Advanced interfaces operate fundamental roles in essentially all integrated devices. It is therefore of the utmost urgency to focus on how newly-discovered fundamental constituents and interfacial progressions can be materialized and used for precise purposes. Interfaces are associated in wide multiplicity of application spectrum from chemical catalysis to drug functions and the advancement is funnelled by fine-tuning of our fundamental understanding of the interface effects.
Author: Olivier Pluchery
Publisher: World Scientific
ISBN: 1800613415
Category : Science
Languages : en
Pages : 356
Get Book Here
Book Description
What is a plasmon? Is it a particle, like a photon or a wave? Plasmonics stands at the frontier of condensed matter physics, which is the world of electrons, optics and of photons. Plasmonics is one of the most active fields in nanophotonics. This book begins by exploring the concepts behind waves, and the electromagnetic description of light when it interacts with metals; it dedicates every chapter thereafter to all aspects of plasmonics. In particular, the surface plasmon polariton wave is explained in full detail, as well as the localized surface plasmon resonance of metallic nanoparticles. The active research area opened by plasmonics, as well as its applications, are also briefly explained, such as advanced biosensing, subwavelength waveguiding, quantum plasmonics, nanoparticle-based cancer therapies, optical nano-antenna and high-efficiency photovoltaic cells.The book is adapted for graduate students and places a special emphasis on providing complete explanations of the fundamental concepts of plasmonics. Further, each of these concepts is illustrated with examples drawn from the most recent scientific literature. Each chapter ends with a set of exercises that will help the reader revise the concepts and go deeper into the world of plasmonics. More than 70 exercises are included.
Author: Agnes Buka
Publisher: World Scientific
ISBN: 1848167997
Category : Science
Languages : en
Pages : 299
Get Book Here
Book Description
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.
Author: William Stallings
Publisher: Pearson
ISBN: 013676729X
Category : Computers
Languages : en
Pages : 899
Get Book Here
Book Description
Gain a Deep, Practical Understanding of 5G Technology, Applications, Architecture, Standards, and Ecosystem The 5G ultra-high-speed wireless communication standard is a major technological leap forward--substantially increasing speed and capacity, enhancing current use cases, and making many new applications practical. For technical professionals, managers, and students, 5G requires significant new knowledge and expertise. In 5G Wireless: A Comprehensive Introduction, renowned information technology author William Stallings presents a comprehensive and unified explanation of 5G's key applications, technologies, and standards. Like Stallings' other award-winning texts, this guide will help you quickly find the information and gain the mastery to succeed with critical new technology. Stallings first explains how cellular networks have evolved through 4G and now 5G, and surveys 5G's application areas and use cases. Next, he thoroughly introduces the 5G core network, covering SDN, NFV, network slicing, QoS, and edge computing--and provides a detailed coverage of the 5G air interface and radio access network. Throughout, key concepts are illuminated through realistic examples, review questions help you test your understanding, and references support further exploration. Understand the 5G ecosystem, its building blocks, standards, and R&D roadmaps Explore the Enhanced Mobile Broadband (eMBB) use case, where 5G enhances 4G in applications such as smart offices and dense urban communications Learn how Massive Machine Type Communications (mMTC) and Ultra-Reliable and Low-Latency Communications (URLCC) support new applications such as fog, IoT, and cloud Discover how 5G NextGen core (backbone) networks serve and interconnect wireless access networks that connect user devices Master key 5G NR Air Interface and Radio Access Network (RAN) concepts, including millimeter-wave transmission, MIMO antennas, and OFDM multiplexing
Author: Ed Tittel
Publisher: John Wiley & Sons
ISBN: 0470388668
Category : Computers
Languages : en
Pages : 403
Get Book Here
Book Description
Now featuring more than 250 color illustrations throughout, this perennially popular guide is a must for novices who want to work with HTML or XHTML, which continue to be the foundation for any Web site The new edition features nearly 50 percent new and updated content, including expanded coverage of CSS and scripting, new coverage of syndication and podcasting, and new sample HTML projects, including a personal Web page, an eBay auction page, a company Web site, and an online product catalog The companion Web site features an eight-page expanded Cheat Sheet with ready-reference information on commands, syntax, colors, CSS elements, and more Covers planning a Web site, formatting Web pages, using CSS, getting creative with colors and fonts, managing layouts, and integrating scripts
Author: Sir Arthur Eddington
Publisher: BoD – Books on Demand
ISBN: 3734792207
Category : Science
Languages : en
Pages : 198
Get Book Here
Book Description
It is often said that there is no "philosophy of science", but only the philosophies of certain scientists. But in so far as we recognize an authoritative body of opinion which decides what is and what is not accepted as present-day physics, there is an ascertainable present-day philosophy of physical science. It is the philosophy to which those who follow the accepted practice of science stand committed by their practice. This book contains the substance of the course of lectures which the author Eddington delivered as Tarner Lecturer of Trinity College Cambridge in the Easter Term 1938. The lectures have afforded him an opportunity of developing more fully than in his earlier books the principles of philosophic thought associated with the modern advances of physical science.
