Local A-Site Layering in Rare-Earth Orthochromite Perovskites by Solution Synthesis

Luke M Daniels, Reza J Kashtiban, Demie Kepaptsoglou, Quentin M Ramasse, Jeremy Sloan, Richard I Walton

Research output: Contribution to journalArticlepeer-review


Cation size effects were examined in the mixed A-site perovskites La0.5 Sm0.5 CrO3 and La0.5 Tb0.5 CrO3 prepared through both hydrothermal and solid-state methods. Atomically resolved electron energy loss spectroscopy (EELS) in the transmission electron microscope shows that while the La and Sm cations are randomly distributed, increased cation-radius variance in La0.5 Tb0.5 CrO3 results in regions of localised La and Tb layers, an atomic arrangement exclusive to the hydrothermally prepared material. Solid-state preparation gives lower homogeneity resulting in separate nanoscale regions rich in La3+ and Tb3+ . The A-site layering in hydrothermal La0.5 Tb0.5 CrO3 is randomised upon annealing at high temperature, resulting in magnetic behaviour that is dependent on synthesis route.

Original languageEnglish
Pages (from-to)18362-18367
Number of pages6
JournalChemistry : A European Journal
Issue number51
Early online date3 Nov 2016
Publication statusE-pub ahead of print - 3 Nov 2016

Bibliographical note

© 2016 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.


  • Journal Article

Cite this