Work

Laterally Differentiated Polymorphs: a route to multifunctional nanostructures

Year: 2026

Type: preprint

Abstract: Multifunctional materials can exhibit emergent behavior from the coupling of two or more different properties. For example, coupling between magnetic and ferroelectric order enables electrical control of the magnetic state, enabling for example magnetoelectric memory or logic devices that combine the nonvolatility of magnetic order with the energy efficiency of voltage control. Magnetic iron garnets have outstanding magnonic and magnetooptical properties making them valuable in a range of technologies, but they have not been successfully incorporated into thin film two-phase magnetoelectric nanocomposites. Taking advantage of heterogeneously patterned substrates, this work demonstrates the engineering of garnet-perovskite composites in which both phases are polymorphs with the same composition but dramatically different structures and properties. Applying an electric field to the perovskite phase modulates the magnon dispersion and magnetooptical response of the garnet, opening a path to voltage-controlled garnet devices.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2604.07495

Authors: Lauer, Pete E., Hayashi, Kensuke, Kunai, Yuichiro, Wojewoda, Ondřej, Klíma, Jan, Pribytova, Ekaterina, Urbánek, Michal, Penn, Aubrey, Kikuchi, Takayuki, Ma, Renzhi, Sasaki, Takayoshi, Taniguchi, Takaaki, Ross, Caroline A.

Institutions: Massachusetts Institute of Technology, Fujikura (Japan), Central European Institute of Technology, Brno University of Technology, IIT@MIT, National Institute for Materials Science

Topic: Multiferroics and related materials

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, Ministerstvo Školství, Mládeže a Tělovýchovy, Central European Institute of Technology, Japan Society for the Promotion of Science, Division of Materials Research

Awards: G1454965787, Development of conductive ferromagnetic oxide nanosheets and pioneering of printable spintronics, Research infrastructure CzechNanoLab, G313257413, Magnetic garnet thin films: novel properties through interface and site occupancy engineering, G8140083606, Millimeter- and Terahertz- Wave Absorber Designed by Antiferromagnetic Resonance of Iron-Based Corundum Oxides

OpenAlex ID: W7153104146

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