APS Logo

Topotactic reduction of Brownmillerite cobalt oxide

ORAL

Abstract

The soft chemistry topotactic reduction technique has been used for various transition metal oxide compounds to investigate low oxidation states and their resultant physical properties.1 Among recent studies, the discovery of superconducting infinite-layer nickelate thin films highlights the synthetic opportunities provided by topochemistry.2 Here, we adopt this low-temperature reduction method to explore the reduction of brownmillerite cobaltate into a lower oxidation state, using epitaxial thin films.

–

Publication: 1. M. A. Hayward, Semicond. Sci. Technol. 29, 064010 (2014).<br>2. D. Li et al., Nature 572, 624 (2019).

Presenters

  • Woojin Kim

    Stanford University, Stanford Institute for Materials and Energy Sciences

Authors

  • Woojin Kim

    Stanford University, Stanford Institute for Materials and Energy Sciences

  • Michelle Smeaton

    Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, United States

  • Berit H Goodge

    School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, United States.

  • Kyuho Lee

    Stanford University, Stanford University; SLAC National Accelerator Laboratory

  • Motoki Osada

    Stanford Univ, Stanford University; SLAC National Accelerator Laboratory, Stanford University

  • Lena F Kourkoutis

    Cornell University, School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, United States.

  • Harold Y Hwang

    Stanford Univ, Stanford University; SLAC National Accelerator Laboratory, Stanford University