[17p-WL2_101-1~10] CS.6 Code-sharing Session of 6.3 & 6.4

2:30 PM - 2:45 PM JST(5:30 AM - 5:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[17p-WL2_101-5] Metallic conduction in Sr_2.5Bi_0.5NiO₅ films synthesized by rapid annealing

〇(M1)Kenta Natsui¹, Hideyuki Kawasoko¹, Soichi Kikkawa¹, Seiji Yamazoe¹ (1.Tokyo Metropolitan Univ.)

Keywords:

Transition metal oxide,Electrical conduction,X-ray Absorption Fine Structure

Electrical resistivity of layered nickelate Sr_2.5Bi_0.5NiO₅ is significantly modulated by controlling the Sr/Bi ordering within the rock-salt layers. Recently, Sr_2.5Bi_0.5NiO₅ thin films were synthesized via solid-phase epitaxy, exhibiting semiconducting behavior, which differs from metallic behavior observed in polycrystalline bulk samples. In this study, we achieved metallic conduction by optimizing the thin-film synthesis conditions and discuss its origin.