Energy Functional Materials Engineering Laboratory

Prof. Daniel Sando and Dr. Manu Mohan from the University of Canterbury in New Zealand visited us and gave lectures on multiferroic thin films.

Lecturer: Prof. Daniel Sando and Dr. Manu Mohan (University of Canterbury)
Crafting Magnetic and Ferroelectric Textures in Multiferroic Oxide Films through Anisotropic Epitaxy and Superlattice Engineering

Dr. Drew Behrendt joined us as a specially appointed assistant professor on October 1st.

We held a farewell party for Kosuke Ono-sensei on September 30th.

Note: As of October 1st, he has taken up a position as an Assistant Professor in the Structural Physics Laboratory (led by Prof. Koichi Hayashi) at the Nagoya Institute of Technology.

Hinata SAWAKI won the presentation award of The 11th International Congress on Ceramics (ICC’11) held in Sapporo Convention Center, Japan for his presentation on electro-optic property of BaTiO₃ thin films.

Kaylin Lamaute-san from Pennsylvania State University visited us.

Erdogan Kasisari-san from University of Freiburg visited us and conducted experiments for two months.

Our paper entitled “Low-Field Giant Dielectric Tunability by Polaron-Mediated Interfacial Polarization in Pulsed-Laser-Deposited-Nanocrystalline/Amorphous composite BaTiO₃ Thin Films” has been published in Adv. Electron. Mater. BaTiO₃ thin films grown under vacuum show giant dielectric tunability at low electric fields due to oxygen-vacancy-induced polaron-mediated interfacial polarization. The films achieve a dielectric constant above 3000 and a record tunability efficiency, enabling high-performance low-voltage tunable dielectric devices.

On Jul. 1, Prof. My Ali El Khakani (INRS, Canada) visited us and lectured on material synthesis using PLD.

Lecturer: Prof. My Ali El Khakani (INRS, Canada)
The Pulsed Laser Deposition Approach for the Growth of 1d, 2d and Nanohybrid Materials with Tunable Optoelectronic Properties

Our paper entitled “Nonmonotonic Enhancement of Electro-optic Properties of Wurtzite AlN Thin Films by Sc Doping” has been published in Adv. Electron. Mater. We demonstrated the nonmonotonic enhancement of EO response in AlScN films with increasing Sc content up to 32%, which suggests that further increases in Sc content may yield EO response comparable to or even superior to that of LiNbO₃, a present representative EO material.