ISIS Neutron and Muon Source Data Journal

Exploring orders in new double double perovskites

Abstract: Perovskites ABO3 are important for many properties. Cation orderings can give double perovskites (DPv) and double double perovskites (DDPv = AA?BB?O6). Using high pressure-temperature synthesis, we discovered a new type of DDPv. We propose to study two further materials; 1. CaFeFeNbO6 ? the first Fe-based DDPv. All previously reported DDPvs were Mn-based so CaFeFeNbO6 is an exciting development. WISH data are needed to investigate spin orders below 11 and 250 K transitions, and to measure O coordinates so BVS?s can be used to measure Fe2+/Fe3+ intersite charge transfer. 2. CaMnCoWO6 ? the role of Mn/Co disorder. CaMnMnWO6 can be switched cleanly from a DDPv to a DPv polymorph leading to a switch in magnetic properties. We have subsequently prepared this new analogue - WISH PND data are needed to investigate spin order below 20 K and determine Mn/Co anti-site disorder - an extra variable.

Principal Investigator: Professor Paul Attfield
Experimenter: Dr Kunlang Ji
Local Contact: Dr Pascal Manuel
Experimenter: Mr Michael Milton

DOI: 10.5286/ISIS.E.RB2210178

ISIS Experiment Number: RB2210178

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Paul Attfield et al; (2022): Exploring orders in new double double perovskites, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2210178

Data is released under the CC-BY-4.0 license.