Magnetimpedance spectroscopy of magnetodielectric mesostructures

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Our research program aims to design and study new materials with controlled electromagnetic properties, especially in the microwave range. The targeted materials mostly consist in dielectric matrices with embedded magnetic and metallic particles (nanowires or nanoclusters). The control of the properties, essentially the impedance and the propagation constant, will be achieved through the control of the magnetic and dielectric properties of the materials. The electrical impedance will be studied, both theoretically and experimentally, as a function of the frequency, the magnetic field and the temperature. It is anticipated that the magnetic field tuneability, along with the proper choice of material composition and geometry, will allow an unprecedented degree of liberty, and provide new engineering concepts for the development of a new class of materials for applications in communication and information technologies. The emerging fields of spintronics and of metamaterials are examples of research fields which could benefit from our research.