CaFeFeNbO 6 - an iron-based double double perovskite

Ordering of cations is important for controlling properties of ABO perovskites, and CaFeFeNbO is the first example of an Fe-based AA'BB'O double double perovskite, with Ca /Fe ordered on A-site columns, and Fe /Nb at the octahedral B-sites. Substantial (37%) antisite disorder of the latter...

Full description

Saved in:
Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2023-05, Vol.59 (42), p.6371-6374
Main Authors: Ji, K, Bedward, J R, Li, Q, Manuel, P, Ritter, C, Attfield, J Paul
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Ordering of cations is important for controlling properties of ABO perovskites, and CaFeFeNbO is the first example of an Fe-based AA'BB'O double double perovskite, with Ca /Fe ordered on A-site columns, and Fe /Nb at the octahedral B-sites. Substantial (37%) antisite disorder of the latter cations leads to spin glassy magnetism below a freezing transition at 12 K. The CaMnFeNbO analogue also shows substantial cation disorder and spin glassy behaviour. Comparison of synthesis pressures for ordered materials based on different A-site transition metals, suggests that pressures of at least 14-18 GPa will be required to discover the expected plethora of double double perovskites based on A' cations smaller than Mn .
ISSN:1359-7345
1364-548X
DOI:10.1039/d3cc01115a