Measurement of Magnetism in Composite Materials
This tutorial aims at revisiting the very basic concept of the measurement of magnetic behavior and magnetic permeability, as well as at providing a discussion towards possible novel magnetic materials, even with very unusual arbitrary B-H relationships. Starting from the spatial averaging of unobservable microscopic fields and the identification of the observable macroscopic fields as introduced by Lorentz, the measurement of the magnetic permeability in composite materials is discussed from its basic definition. Particular composite resonator structures are considered and it is shown how they can exhibit even negative magnetic permeability values even at industrial frequencies.
Bernardo Tellini was born in Pisa, Italy, in 1969. He received the M.S. (Laurea) and Ph.D. degrees in electrical engineering from the University of Pisa, Pisa, in 1993 and 1999, respectively. Since 2000, he has been with the University of Pisa, where he is currently a Full Professor of electrical measurements with the Department of Energy, Systems, Territory and Construction Engineering. His current research interests include characterization of electrical and magnetic properties of materials, pulsed power metrology with particular application to electromagnetic launchers, measurements for railway systems, characterization of aging processes in lithium batteries, electrical current transduce.
Prof. Tellini is a member of the IEEE Instrumentation and Measurement Society and the IEEE Magnetics Society. From 2014 to 2016 he was a member of the I2MTC Board of Directors. Since January 2019, he is the Chair of the IEEE Italy Section.
He was the General Chair of the International Instrumentation and Measurement Technology Conference I2MTC in 2015. He was the General Co-Chair of IEEE RTSI 2019.
Audience: Young Professionals, Professionals in I&M, Researchers, Students
Publication Year: 2020