Gaseous Dielectrics X, Loucas C. Christophorou; James K. Olthoff; Panayot

Автор: Loucas G. Christophorou; D.R. James
Название: Gaseous Dielectrics VII
ISBN: 0306449846 ISBN-13(EAN): 9780306449840
Издательство: Springer
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Описание: The Seventh International Symposium on Gaseous Dielectrics was held in Knoxville, Tennessee, U. It is hoped that Gaseous DielecIries VII will aid future research and development in, and encourage wider industrial use of, gaseous dielectrics. The Organizing Committee of the Seventh International Symposium on Gaseous Dielectrics consisted of G.

Автор: Breeze
Название: Temperature and Frequency Dependence of Complex Permittivity in Metal Oxide Dielectrics: Theory, Modelling and Measurement
ISBN: 3319445456 ISBN-13(EAN): 9783319445458
Издательство: Springer
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Описание: This thesis investigates the dielectric properties of metal-oxide ceramics at microwave frequencies. It also demonstrates for the first time that a theory of harmonic phonon coupling can effectively predict the complex permittivity of metal oxides as a function of temperature and frequency. Dielectric ceramics are an important class of materials for radio-frequency, microwave and emergent terahertz technologies. Their key property is complex permittivity, the real part of which permits the miniaturisation of devices and the imaginary part of which is responsible for the absorption of electromagnetic energy. Absorption limits the practical performance of many microwave devices such as filters, oscillators, passive circuits and antennas. Complex permittivity as a function of temperature for low-loss dielectrics is determined by measuring the resonant frequency of dielectric resonators and using the radial mode matching technique to extract the dielectric properties.There have been only a handful of publications on the theory of dielectric loss, and their predictions have often been unfortunately unsatisfactory when compared to measurements of real crystals, sometimes differing by whole orders of magnitude. The main reason for this is the lack of accurate data for a harmonic coupling coefficient and phonon eigenfrequencies at arbitrary q vectors in the Brillouin zone. Here, a quantum field theory of losses in dielectrics is applied, using results from density functional perturbation theory, to predict from first principles the complex permittivity of metal oxides as functions of frequency and temperature.

Автор: Gianfranco Pacchioni; Linards Skuja; David L. Gris
Название: Defects in SiO2 and Related Dielectrics: Science and Technology
ISBN: 0792366859 ISBN-13(EAN): 9780792366850
Издательство: Springer
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Описание: Silicon dioxide plays a central role in most contemporary electronic and photonic technologies. This book provides a general description of the influence that point defects have on the global properties of the bulk material and their spectroscopic characterization through ESR and optical spectroscopy.

Автор: Loucas C. Christophorou; James K. Olthoff; Panayot
Название: Gaseous Dielectrics X
ISBN: 1461347459 ISBN-13(EAN): 9781461347453
Издательство: Springer
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Цена: 19564.00 р.
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