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Condens. Matter 2016, 1(1), 12; doi:10.3390/condmat1010012

An Analytical Model for Evaluation of the Properties of Metallic Coatings in RF Structures

INFN—Laboratori Nazionali di Frascati, Via E. Fermi 40, 00044 Frascati, Italy
Dipartimento di Ingegneria Elettrica, Elettronica e Informatica, University of Catania, 95126 Catania, Italy
RICMASS, Rome International Center for Materials Science Superstripes, Via dei Sabelli 119A, 00185 Rome, Italy
CNR Istituto per la Microelettronica e Microsistemi—IMM, VIII Strada 5, 95121 Catania, Italy
Dipartimento di Fisica, University of Rome Sapienza, 00185 Rome, Italy
Author to whom correspondence should be addressed.
Received: 16 November 2016 / Accepted: 15 December 2016 / Published: 17 December 2016
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A simple analytic model based on the equations of the propagation matrices theory has been developed in order to evaluate the effective skin depth of coated metallic surfaces. With particular attention to the R&D of highly-performing accelerating structures, different thick coatings with excellent mechanical and electrical properties have been considered such as molybdenum and its oxides, p-doped SiC, and TiN. Calculations show that copper coated with a p-type SiC may exhibit an improved hardness and a higher thermal resistance. Combined with experimental tests, this study may support the identification of reliable multilayers capable of improving the higher power performance of radio-frequency (RF) structures in terms of the accelerating gradient in order to increase the resistance to the high thermal stress of structures made with copper. View Full-Text
Keywords: analytical model; transition metal (TM) coating; accelerating structures; silicon carbide analytical model; transition metal (TM) coating; accelerating structures; silicon carbide

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Castorina, G.; Marcelli, A.; Monforte, F.; Sarti, S.; Spataro, B. An Analytical Model for Evaluation of the Properties of Metallic Coatings in RF Structures. Condens. Matter 2016, 1, 12.

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