Coexistence of Magnetic Order and Ferroelectricity at 2D Nanosheet Interfaces

Bao Wen Li, Minoru Osada, Yasuo Ebina, Shigenori Ueda, Takayoshi Sasaki

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Multiferroic materials, in which the electronic polarization can be switched by a magnetic field and vice versa, are of fundamental importance for new electronic technologies. However, there exist very few single-phase materials that exhibit such cross-coupling properties at room temperature, and heterostructures with a strong magnetoelectric coupling have only been made with complex techniques. Here, we present a rational design for multiferroic materials by use of a layer-by-layer engineering of 2D nanosheets. Our approach to new multiferroic materials is the artificial construction of high-quality superlattices by interleaving ferromagnetic Ti0.8Co0.2O2 nanosheets with dielectric perovskite-structured Ca2Nb3O10 nanosheets. Such an artificial structuring allows us to engineer the interlayer coupling, and the (Ti0.8Co0.2O2/Ca2Nb3O10/Ti0.8Co0.2O2) superlattices induce room-temperature ferroelectricity in the presence of the ferromagnetic order. Our technique provides a new route for tailoring artificial multiferroic materials in a highly controllable manner.

Original languageEnglish
Pages (from-to)7621-7625
Number of pages5
JournalJournal of the American Chemical Society
Volume138
Issue number24
DOIs
Publication statusPublished - 2016 Jun 22
Externally publishedYes

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ASJC Scopus subject areas

  • Catalysis
  • Biochemistry
  • Chemistry(all)
  • Colloid and Surface Chemistry

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