Giant coercivity and spin clusters in high pressure polymorphs of Mn2LiReO6

Elena Solana-madruga; Clemens Ritter; Olivier Mentré; J. Paul Attfield; Ángel M. Arévalo-lópez

doi:10.1039/D2TC00451H

Giant coercivity and spin clusters in high pressure polymorphs of Mn₂LiReO₆

Elena Solana-madruga, Clemens Ritter, Olivier Mentré, J. Paul Attfield, Ángel M. Arévalo-lópez

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	4336-4341
Journal	Journal of Materials Chemistry C Materials for optical and electronic devices
Volume	10
Issue number	11
DOIs	https://doi.org/10.1039/D2TC00451H
Publication status	Published - 24 Feb 2022

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Cite this

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title = "Giant coercivity and spin clusters in high pressure polymorphs of Mn2LiReO6",

abstract = "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.",

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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.

In: Journal of Materials Chemistry C Materials for optical and electronic devices, Vol. 10, No. 11, 24.02.2022, p. 4336-4341.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Giant coercivity and spin clusters in high pressure polymorphs of Mn2LiReO6

AU - Solana-madruga, Elena

AU - Ritter, Clemens

AU - Mentré, Olivier

AU - Attfield, J. Paul

AU - Arévalo-lópez, Ángel M.

PY - 2022/2/24

Y1 - 2022/2/24

N2 - 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.

AB - 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.

U2 - 10.1039/D2TC00451H

DO - 10.1039/D2TC00451H

M3 - Article

VL - 10

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EP - 4341

JO - Journal of Materials Chemistry C Materials for optical and electronic devices

JF - Journal of Materials Chemistry C Materials for optical and electronic devices

SN - 2050-7526

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