Doping of Dion-Jacobson phases with quantum magnetic ground states

DOI

Dion-Jacobson (DJ) [layered perovskites A'[An-1BnO3n+1], where A' is an alkali cation, A is an alkaline earth or rare earth cation and B is a transition metal) have a wide range of functionalities. (CuCl)LaNb2O7 behaves as a system of ferromagnetically coupled Shastry-Sutherland quantum spin singlets. We have prepared Dion-Jacobson layered perovskites (CuCl)La1–xSrxNb2O7 (x = 0, 0.1 and 0.15) via topotactic ion-exchange reactions with intermediate compounds RbLa1–xSrxNb2O7. Replacing some La3+ ions with Sr2+ ions in the perovskite precursor is expected to disrupt the quantum singlet state and perhaps lead to a transition from insulator to metallic behaviour. High resolution powder neutron diffraction data are required to discover how Sr-doping affects the orthorhombic superstructure and whether any magnetic order emerges at low temperature as a result of dimer-breaking.

Identifier
DOI https://doi.org/10.5286/ISIS.E.84802950
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/84802950
Provenance
Creator Dr Pascal Manuel; Mr Kunlang Ji; Professor Paul Attfield; Dr KUNLANG JI; Miss Giuditta Perversi
Publisher ISIS Neutron and Muon Source
Publication Year 2020
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Photon- and Neutron Geosciences
Temporal Coverage Begin 2017-03-08T08:00:00Z
Temporal Coverage End 2017-03-10T08:00:00Z