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Master's lecture in Engineering Physics -  Ragnar Dzosua Builong Jónsson

When 
Thu, 19/09/2019 - 15:00 to 16:00
Where 

Veröld - Hús Vigdísar

V008

Further information 
Free admission

 Master's student:  Ragnar Dzosua Builong Jónsson

Title:  A Boron-doped LaAlO3 (Bx-LAO1-x) Nano-composite Study.

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Faculty:  Faculty of Physical Sciences

Advisors:  Dr. Hafliði Pétur Gíslason, Professor at the Faculty of Physical Sciences

Other member of the Master Committee: Dr. Dae-Sung Park, Swiss Federal Institute of Technology, Lausanne, Switzerland.

Examiner: Dr. Halldór Guðfinnur Svavarsson, Professor at Reykjavík University

Abstract

Atomic-scale fabrication of complex oxide-based interfaces provides a platform with many novel physical phenomena and functional properties for the next generation of solid-state device applications. In the thesis a new class of materials system is described, a LaAlO3/LaBO3 nano-composite (LABO), which has a unique structural formation in thin-film regime and multi-functionalities. Boron interstitial doping creates a series of remarkable electrical conductivity and strong ferromagnetic properties in the non-magnetic, insulating oxide systems. The adopted route is feasible through the light element interstitial doping, in contrast to the widely employed substitutional doping. This thesis contributes to a new perspective to the design of magnetic ionic-electronic conductors in thin film structure regime. Evolution of self-assembled nano-pillar structures within LABO thin films can secure the control of vertical hetero-interface arrangement and, therefore, it can offer promising opportunities to extract a variety of functional properties such as resistance switching, exotic magnetic coupling effects, and photoelectric properties.