Garnet superlattice as a transparent above-room-temperature polar magnet

Y. Krockenberger, J. S. Lee, D. Okuyama, H. Nakao, Y. Murakami, M. Kawasaki, Y. Tokura

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


The interface magnetic state in the garnet superlattices has been investigated by measuring the magnetization-induced second harmonic generation. Among the superlattice films being composed of sequentially stacked two or three different compositions of garnet layers including a magnetic yttrium iron garnet, while the centrosymmetric bicolor superlattices show little magnetic field effect, the tricolor superlattice exhibits a large nonlinear Kerr rotation manifesting a polar magnetic state formed at the interface. Furthermore, we found that the interface magnetic state is switchable by a tiny magnetic field (~5 mT) over a wide temperature range up to about 550 K, and the material itself is visibly transparent, which will promise a potential magnetoelectric optical element.

Original languageEnglish
Article number214414
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number21
Publication statusPublished - 2011 Jun 14
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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