Year: 2026

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.

Prof. Mahesh Peddigari (IIT Hyderabad, India) visited us and lectured on energy storage applications using ferroelectrics.

Lecturer: Prof. Mahesh Peddigari (IIT Hyderabad, India)
Aerosol Deposited Dielectric Ceramic Thick Films for Energy Storage Applications

Niklas Kyoushi-san from University of Kiel visited us and conducted experiments over a period of two weeks.

Our paper entitled “Large-area Release of Pb(Zr, Ti)O₃ Films with Reduced Crack Generation via Ferroelastic Domain Engineering” has been published in Small Struct. We demonstrated an approach for producing 200 nm-thick freestanding PZT membranes with reduced crack generation by achieving a single c-domain structure through ferroelastic domain engineering.

Our paper entitled “Substrate Dependence on the Growth of Defective-wurtzite Al₂S₃ Thin Films using Pulsed Laser Deposition” has been published in J. Ceram. Soc. Jpn. We demonstrated the Al₂S₃ can be grown epitaxially on α-Al₂O₃(0001) and SrTiO₃(111) using PLD.