Tuning B-B exchange in the R2MnMn(Mn4-xTix)O12 quadruple perovskite manganites


For the RMn3O6 manganites, we have shown that tuning A-B exchange, by choice of A-site cation or by doping magnetic impurities, gives rise to dramatically different magnetic ground states. We propose an experiment to observe the effect of an alternative tuning mechanism, via B-B exchange. Four different RMn3O6 compounds were synthesised; SmMn3O6 with 25%, 50% and 75% Ti4+ on the B-sites, and a fourth NdMn3O6 sample with 50% Ti4+ on the B sites. All four samples magnetically order, where remarkably an increase in non-magnetic Ti ions increases the ordering temperature. The Ti-doped NdMn3O6 sample features a second phase transition at ~15K, which we hypothesise to be a spin-flop transition based on magnetometry data and point charge calculations. This experiment will form a crucial part of our study on the RMn3O6 compounds and will be paramount in determining their phase diagram.

DOI https://doi.org/10.5286/ISIS.E.RB1920116-1
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/104143257
Creator Dr Dmitry Khalyavin; Dr Pascal Manuel; Dr Roger Johnson; Dr Anuradha Vibhakar
Publisher ISIS Neutron and Muon Source
Publication Year 2022
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Resource Type Dataset
Discipline Natural Sciences; Physics
Temporal Coverage Begin 2019-06-26T07:30:00Z
Temporal Coverage End 2019-07-09T07:35:29Z