Issue 20, 2019

BaCoO2+δ: a new highly oxygen deficient perovskite-related phase with unusual Co coordination obtained by high temperature reaction with short reaction times

Abstract

A new highly oxygen deficient metastable modification of perovskite-related BaCoO2+δ (δ ∼ 0.01–0.02) has been prepared using high temperature reactions with short heating times. This defect rich compound has at least partially square planar coordination of the Co2+ ions, a highly unusual coordination environment for Co. Low temperature neutron powder diffraction showed a G-type antiferromagnetic ordering, confirmed by SQUID magnetic measurements, which indicate a high Néel temperature of 220 K. This work shows how novel defective phases can be synthesized by exploiting short reaction times in solid state synthesis, thus offering an alternative route for new materials synthesis.

Graphical abstract: BaCoO2+δ: a new highly oxygen deficient perovskite-related phase with unusual Co coordination obtained by high temperature reaction with short reaction times

  • This article is part of the themed collection: Perovskites

Supplementary files

Article information

Article type
Communication
Submitted
30 Nov. 2018
Accepted
07 Febr. 2019
First published
07 Febr. 2019

Chem. Commun., 2019,55, 2920-2923

BaCoO2+δ: a new highly oxygen deficient perovskite-related phase with unusual Co coordination obtained by high temperature reaction with short reaction times

A. I. Waidha, H. Zhang, M. Lepple, S. Dasgupta, L. Alff, P. Slater, A. D. Fortes and O. Clemens, Chem. Commun., 2019, 55, 2920 DOI: 10.1039/C8CC09532A

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