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Solana Madruga, Elena Ritter, Clemens Mentré, Olivier Attfield, J. Paul Arévalo López, Ángel M. 2026-06-01T12:08:46Z 2026-06-01T12:08:46Z 2022 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 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. eng restricted access Giant coercivity and spin clusters in high pressure polymorphs of Mn2LiReO6 journal article