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arXiv · 2509.00384

Recent Advances in Unconventional Ferroelectrics and Multiferroics

Hongyu Yu·Junyi Ji·Wei Luo·Xingao Gong·Hongjun Xiang
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Abstract

Emerging ferroic materials may pave a new way to next-generation nanoelectronic and spintronic devices due to their interesting physical properties. Here, we systematically review unconventional ferroelectric systems, from Hf-based and elementary ferroelectrics to stacking ferroelectricity, polar metallicity, fractional quantum ferroelectricity, wurtzite-type ferroelectricity, and freestanding membranes ferroelectricity. Moreover, multiferroic materials are reviewed, particularly the interplay between novel magnetic states and ferroelectricity, as well as ferrovalley-ferroelectric coupling. Finally, we conclude by discussing current challenges and future opportunities in this field.

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Hongyu Yu, Junyi Ji, Wei Luo, Xingao Gong, Hongjun Xiang. 2025-08-30. Recent Advances in Unconventional Ferroelectrics and Multiferroics. https://doi.org/10.1002/adma.202507070

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