Introduction to Research

Antiperovskite Oxides

My main activity at Kyoto University was to synthesize antiperovskite oxides and handle the samples with great care to avoid decomposition in air while measuring transport and magntic properties. Superconductivity in Sr3-xSnO is reported in Nature Communications [Free Access].

APvsP
Comparing crystal structure of perovskite oxide (SrSnO3) and antiperovskite oxide (Sr3SnO) [top]. Showing superconducting transition in Sr3-xSnO sample with superconducting transtion at 5 K. [Bottom] QM Group Page

Barium Copper Chalcogenide

Improved efficiency of thermoelectric barium copper chalcogenides, and acheived a zT>0.8 in BaCu6SeTe6. Also, explored other transition metal chalcogenide systems while at the lab of professor Holger Kleinke.

BaCuSeTe_zT
Crystal structure of BaCu8SeTe6 (Actual compound crystalizes with 2 Cu vacancies on average)1 [Left].
Thermoelectric figure-of-merit (zT) plotted as a function of temperature for BaCu6 (S,Se)Te6.2 [Right]