Contents



Preface

With the advance of modern electronic technologies, many electronics work in high frequency, which requires many components to exhibit excellent electromagnetic properties. Discussions of electromagnetic properties mainly focus on highfrequency permeability and permittivity. Different applications have different requirements on these two electromagnetic parameters in the specific frequency range. Some require low magnetic loss and low dielectric loss. Some require large magnetic loss and large dielectric loss. While others require the real parts of permeability and/or permittivity to be negative. Electromagnetic materials nowadays can be naturally synthesized and artificially designed (such as metamaterials).

In this book, the contents discuss the following wide aspects of electromagnetic materials and applications: the measurements of permeability and permittivity; establishment of the relationships between crystal structures, microstructures, and permittivity (dielectric losses); approaches to tailor the high-frequency permeability of magnetic materials; the design of artificial materials to tailor the propagation of electromagnetic waves; and the application of electromagnetic materials (for instance, ferrites, ferromagnetic materials, multiferroic materials, magnetic-optical materials, etc.) in absorbing electromagnetic waves, weaving electromagnetic function textiles, and electromagnetic interference shielding. Some chapters also show the requirements of specific applications on electromagnetic parameters (such as antenna, circulator, and isolators). According to a survey, books with so many

Finally, I would like to express my thanks to the chapter authors for their willingness to share their expertise with readers. I am sure the research findings in this book will be interesting and helpful to graduate students, scientists, and engineers

University of Electronic Science and Technology of China,

Man-Gui Han Professor,

China

new advances in electromagnetic materials are rare.

all around the world.
