Optical Absorption of Transition Metal Doped Glasses PDF Download
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Author: Audrey Marie Davis
Publisher:
ISBN:
Category :
Languages : en
Pages : 82
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Author: Audrey Marie Davis
Publisher:
ISBN:
Category :
Languages : en
Pages : 82
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Author: S. M. Kaczmarek
Publisher:
ISBN:
Category :
Languages : en
Pages : 7
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Absorption and emission spectra of Cr, Eu and Dy ions in Li2B4O7 glasses melted in oxygen and hydrogen were measured for valency states and excited states analysis. It was stated that the presence of Cr(6+) ion is limited by composition of the starting mixture and atmosphere of the melting and that this ion arises as Cr(6+)O4 complex. The 308 nm line excites the Li2B4O7:Cr glass within the highest absorption peak which can be ascribed to the following charge transfer transition: Cr(6+)O4(3d(sup 0)2p(sup 6)) right arrow Cr(5+)O( - )(3d(sup 1)2p(sup 5)). Under gamma irradiation Cr(6+)O4 complex of 3d(sup 0) configuration can be disintegrated giving additional absorption bands of Cr(3+) and may be Cr(4+) centers at tetrahedral sites One of these additional absorption bands is responsible for 430 nm emission.
Author: Emma Ziezie Mohd Tarmizi
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659190858
Category :
Languages : en
Pages : 180
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Book Description
This thesis investigate the role of transition metal (TM) ions in calcium phosphate glass. Various transition metal ions in homogenous calcium phosphate glass were prepared by traditional melt quenching technique. Optical absorption, dielectric spectroscopy, X-ray diffraction (XRD) and Fourier Transform Infrared (FTIR) spectroscopy have been used to characterize the structural, optical and electrical features of the glasses. A number of physical studies have also been conducted which include refractive index and density to explore both binary and ternary systems of phosphate glasses. From the empirical data, other values such as molar volume and molar refractivity have been computed. Systematic analyses based on optical and electrical study due to the introduction of transition metal (TM) ions into the binary system of Calcium Phosphate glass are reported.
Author: Ick-jhin Yoon
Publisher:
ISBN:
Category :
Languages : en
Pages : 612
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Author: Donald Robert Uhlmann
Publisher:
ISBN:
Category : Glass
Languages : en
Pages : 280
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Book Description
Seven independently-authored chapters consider selected topics related to the rapidly growing interest in optical glass among scientists who were hitherto satisfied with opaque ceramics. They cover oxide, halide, and photochromic glasses; nonlinear optical properties; optical basicity; optical fiber
Author: Basudeb Karmakar
Publisher: Butterworth-Heinemann
ISBN: 0128052074
Category : Technology & Engineering
Languages : en
Pages : 418
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Book Description
Functional Glasses and Glass-Ceramics: Processing, Properties and Applications provides comprehensive coverage of the current state-of-the-art on a range of material synthesis. This work discusses the functional properties and applications of both oxide and non-oxide glasses and glass-ceramics. Part One provides an introduction to the basic concept of functional glasses and glass-ceramics, while Part Two describes the functional glasses and glass-ceramics of oxide systems, covering functionalization of glasses by 3d transition metal ion doping, 4f rare earth metal ion doping, crystallization, laser irradiation micro fabrication, incorporation of nanometals, the incorporation of semiconductor coatings, the functionalization for biomedical applications, solid oxide fuel cell (SOFC) sealants, and display devices, and from waste materials. Part Three describes functional glasses and glass-ceramics of non-oxide systems, covering functional chalcogenide and functional halide glasses, glass-ceramics, and functional bulk metallic glasses. The book contains future outlooks and exercises at the end of each chapter, and can be used as a reference for researchers and practitioners in the industry and those in post graduate studies. Provides a comprehensive text that explores the field of both functional glass and glass ceramics Presents an in-depth discussion on the definition of a functional glass Includes discussions of advanced processing, functional properties, and functional applications of a wide array of functional glasses and glass-ceramics Written using a systematic approach that can only be accomplished through an authored work
Author: Thomas Schönherr
Publisher: Springer Science & Business Media
ISBN: 9783540008545
Category : Science
Languages : en
Pages : 332
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Book Description
With contributions by numerous experts
Author: Mikhail G. Brik
Publisher: CRC Press
ISBN: 100000757X
Category : Science
Languages : en
Pages : 209
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Book Description
This book describes in detail the main concepts of theoretical spectroscopy of transition metal and rare-earth ions. It shows how the energy levels of different electron configurations are formed and calculated for the ions in a free state and in crystals, how group theory can help in solving main spectroscopic problems, and how the modern DFT-based methods of calculations of electronic structure can be combined with the semi-empirical crystal field models. The style of presentation makes the book helpful for a wide audience ranging from graduate students to experienced researchers. Performance of optical materials crucially depends on the impurity ions intentionally introduced into the crystalline host materials. The color of these materials, their emission and absorption spectra can be understood by analyzing the relations between the electronic properties of impurity ions and host crystal structure, which constitutes the main content of this book. It describes in detail the main concepts of theoretical spectroscopy of transition metal and rare earth ions.
Author: Alias Daud
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Lead fluorophosphate glasses have been prepared from rapid quenching of well mixed compound. Such glasses show a large transparent region with a strong absorption edge rising from 300nm. The absorption edge is strongly influenced by the ratio of Pb0 :P205. The presence of transition metal ions in the glass matrix not only introduce intense bands but also influence the extent of the absorption edge. Nickel ions have characteristics optical absorption bands because of crystal field energy levels. [Authors' abstract].
Author: Terence Bates
Publisher:
ISBN:
Category :
Languages : en
Pages :
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