2026-06-07T19:15:51Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1370532026-06-01T23:49:24Zcom_20.500.14352_14col_20.500.14352_15

Giant coercivity and spin clusters in high pressure polymorphs of Mn2LiReO6 Solana Madruga, Elena Ritter, Clemens Mentré, Olivier Attfield, J. Paul Arévalo López, Ángel M. We present Mn2LiReO6 synthesised at high pressure in two different polymorphs. They are the only A-site manganites with an ideal +/7+ charge distribution over the B/B′ sites. The lower pressure polymorph crystallises in a polar R3 ordered-ilmenite type structure (OIL) with a calculated 26.9 μC cm−2 electrical polarisation. It shows a cluster spin glass behaviour due to Li/Mn anti-site mixing. The well-ordered higher-pressure double-perovskite polymorph (DPv, P21/n) develops weak-ferromagnetism with giant magnetic coercivity (HC = 6.9 T at 2 K) due to magnetocrystalline anisotropy enhanced by symmetry-restricted exchange interactions but in the absence of spin–orbit coupling. 2026-06-01T12:08:46Z 2026-06-01T12:08:46Z 2022 journal article 10. E. Solana-Madruga, C. Ritter, O. Mentré, J. P. Attfield, A. M. Arévalo-López. Giant coercivity and spin clusters in high pressure polymorphs of Mn2LiReO6. J. Mater. Chem. C, 2022,10, 4336-4341. doi: 10.1039/d2tc00451h 10.1039/d2tc00451h https://hdl.handle.net/20.500.14352/137053 https://doi.org/10.1039/D2TC00451H https://pubs.rsc.org/en/content/articlelanding/2022/tc/d2tc00451h eng 19-CE08-0002- 01 restricted access RSC