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Energy Frontier Research Center Seminar - Hybrid Magnetic-Oxide Heterostructures

Ivan K. Schuller - University of California San Diego

Friday, November 17, 2017
  1:30–2:30 p.m.


Location: Chung Hall 205/206
  Parking Information

Category: Seminar

Description:

Hybrid heterostructures allow the engineering of new material properties by creative uses of proximity effects. When two dissimilar materials are in close physical proximity the properties of each one may be radically modified or occasionally a completely new material emerges. Recently, strongly-correlated transition metal oxides, that exhibit first order metal-insulator transitions, have received renewed attention because they can be controlled and manipulated at the nanoscale to develop unique properties. By properly designing hybrid ferromagnet/oxides new magnetic properties arise unlike any known magnetic materials. Moreover, controlling the magnetic properties of ferromagnetic thin films, without magnetic fields, is an on-going challenge with multiple technological implications for low-energy consumption memory and logic devices.


I will describe the static and dynamical properties of strongly correlated nanostructured oxides, which exhibit metal-insulator transitions. These materials when reduced to the nanoscale exhibit interesting properties such as avalanches and critical slowing down in their fast time dependent behavior.   In a series of recent studies, we have investigated the magnetic properties of different hybrids of ferromagnets (Ni, Co and Fe) and oxides, which undergo metal-insulator and structural phase transitions. Both the static as well as dynamical properties of the ferromagnets are drastically affected. Static properties such as the coercivity, anisotropy and magnetization and dynamical properties are clearly modified by the proximity effect and give raise to interesting perhaps useful properties. 


The oxide work supported by the US-AFOSR and the magnetism aspects by the US-DOE.



Additional Information:

Open to: General Public
Admission: Free
Sponsor: Physics and Astronomy

Contact Information:
Naveen Reddy
9518273492
naveen.reddy@ucr.edu