Magnetoelectric domain engineering from micrometer to Ångstrøm scales


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Date

2024-08

Publication Type

Journal Article

ETH Bibliography

yes

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Abstract

The functionality of magnetoelectric multiferroics depends on the formation, size, and coupling of their magnetic and electric domains. Knowing the parameters guiding these criteria is a key effort in the emerging field of magnetoelectric domain engineering. Here we show, using a combination of piezoresponse-force microscopy, nonlinear optics, and x-ray scattering, that the correlation length setting the size of the ferroelectric domains in the multiferroic hexagonal manganites can be engineered from the micron range down to a few unit cells under the substitution of Mn3+ ions with Al3+ ions. The magnetoelectric coupling mechanism between the antiferromagnetic Mn3+ order and the distortive-ferroelectric order remains intact even at substantial replacement of Mn3+ by Al3+. Hence, chemical substitution proves to be an effective tool for domain-size engineering in one of the most studied classes of multiferroics.

Publication status

published

Editor

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Volume

6 (3)

Pages / Article No.

33139

Publisher

American Physical Society

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Edition / version

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Software

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Organisational unit

03918 - Fiebig, Manfred / Fiebig, Manfred check_circle
09778 - Simonov, Arkadiy / Simonov, Arkadiy check_circle

Notes

Funding

215423 - Magnetoelectric Properties of Multiferroic Domain Walls (SNF)
203658 - Local structure of lattice instabilities (SNF)
178825 - Dynamical processes in systems with strong electronic correlations (SNF)
694955 - In-situ second harmonic generation for emergent electronics in transition-metal oxides (EC)
188414 - Multifunctional oxide electronics using natural ferroelectric superlattices (SNF)

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