Composite materials are attractive as they can combine the superior properties and functionalities of each of their constituents. Much of current research focuses on developing multifunctional composites, which unite good mechanical (structural) attributes along with functional properties such as thermal, electrical, or magnetic characteristics. A particularly interesting example of such a composite consists of ferromagnetic microwires embedded in a polymer matrix, which is the main theme of the current book. These composites can exploit phenomena occurring in the wires such as the giant...