Cluster-glass behavior of a highly oxygen deficient perovskite, BaBi(0.28)Co(0.72)O(2.2)

T Klimczuk; H W Zandbergen; Q Huang; T M McQueen; F Ronning; B Kusz; J D Thompson; R J Cava

doi:10.1088/0953-8984/21/10/105801

Cluster-glass behavior of a highly oxygen deficient perovskite, BaBi(0.28)Co(0.72)O(2.2)

J Phys Condens Matter. 2009 Mar 11;21(10):105801. doi: 10.1088/0953-8984/21/10/105801. Epub 2009 Feb 13.

Authors

T Klimczuk¹, H W Zandbergen, Q Huang, T M McQueen, F Ronning, B Kusz, J D Thompson, R J Cava

Affiliation

¹ Los Alamos National Laboratory, Los Alamos, NM 87545, USA. Department of Chemistry, Princeton University, Princeton, NJ 08544, USA.

PMID: 21817439
DOI: 10.1088/0953-8984/21/10/105801

Abstract

A highly oxygen deficient perovskite, BaBi(0.28)Co(0.72)O(2.2), was synthesized by solid state reaction. The crystal structure was determined by means of neutron and x-ray powder diffraction. The material exhibits semiconducting behavior with an energy gap of 1.8 eV. The electron diffraction study does not reveal long range Bi:Co ordering; instead it shows the existence of short range ordering in this phase. The AC and DC magnetic susceptibility studies reveal cluster-glass behavior, which has its origin in the interacting ferromagnetic clusters present.