Microwave and Millimeter Wave Magnetoelectric Interactions in Engineered Multiferroics and Dual Electric and Magnetic Field Tunable Devices; Final rept. 15 Aug 2004-14 Jan 2008

摘要

Layered magnetostrictive-ferroelectric structures are multifunctional due to their response to mechanical and electromagnetic forces. Investigations on microwave magneto-electric (ME)interactions were performed on ferrite-ferroelectrics layered structures. Systems studied include yttrium iron garnet (YIG)-lead zirconate titanate (PZT) or YIG-barium strontium titanate (BST). Our efforts have resulted in the following breakthroughs in experimental and theoretical understanding: (i) The observation of strong microwave ME interactions in YIG-PZT; (ii) Theory and experiments on the creation and propagation characteristics of hybrid spin-electromagnetic waves in YIG-BST; and (iii) Fabrication of electric field tunable YIG-PZT and YIG-BST resonators and phase shifters operating at 3-12 GHz. These results have been published in 35 journal articles.