Tuesday, January 14, 2014
3:00 – 4:00 p.m.
Ibn Al-Haytham, level 5, room 5209
Dr. Jinxing Zhang of the Hong Kong Polytechnic University, will present natural and artificial compounds, focusing on the BiFeO3 (BFO) as it is one of the most promising materials due to its high ferroelectric and antiferromagnetic transition temperature. This lecture will feature a brief introduction about crystal, polar and spin structures of BFO, and how the spin and polar can couple each other in its ground state and highly strained states. The presentation will also focus on the strong magnetoelectric coupling in BFO-related systems at reduced dimensions (e.g. heterointerface, domain walls, and phase boundary etc.). Taking advantage of this multiferroic model system, opportunities arise to better understand the emerging coupling in other ferroic materials. The presentation will conclude with discussing a low-energy-cost strategy to deterministically drive a single magnetic-domain-wall motion by a nanoscale probe-induced spin displacement. These reversible controls of the electric, magnetic, and elastic order parameters demonstrate possible applications in future electronic and magnetoelectronic devices.
For more information about the presentation, and for Dr. Jinxing Zhang’s biography click here.