Event Description
Ph.D. Research Proposal Defense of Yaaqoub Malallah on Tunable RF Components Using Nanoferroics
Dr. Afshin Daryoush, advisor
Abstract
Modern communication systems are evolving very quickly and tunable Radio Frequency (RF) components are needed to utilize the spectrum more effectively. Recent developments in tunable and small size microwave RF components are attractive for communication and radar applications for industrial, civilian, and military purposes. Different frequency control methods include: electrical, mechanical, optical, acoustic, or magnetic. In this research, I focus on the frequency tuning of passive RF components using ferroic nanomaterials by magnetic and electrical control methods. In particular, the focus of this proposal presentation of my PhD thesis is novel ferromagnetic nanoparticles of Iron-Cobalt (Fe60Co40 or FeCo) and ferroelectric thin films of Manganese-doped Barium Strontium Titanate (Ba0.8Sr0.2TiO3 or BST) are considered due to their magnetic field and electric field tuning respectively. The material features of FeCo and BST are their high refraction index (nFeCo>4, nBST>18), high saturation moment (Ms>259mWb.m/kg, Ps>11mC/cm2), low losses (tanδFeCo<0.25, tanδBST<0.02), and low coercivity (Hc<13kA/m, Ec<1V/mm) which makes them viable at microwave frequencies and many RF applications. |
