TY - JOUR
T1 - Garnet superlattice as a transparent above-room-temperature polar magnet
AU - Krockenberger, Y.
AU - Lee, J. S.
AU - Okuyama, D.
AU - Nakao, H.
AU - Murakami, Y.
AU - Kawasaki, M.
AU - Tokura, Y.
PY - 2011/6/14
Y1 - 2011/6/14
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.83.214414
DO - 10.1103/PhysRevB.83.214414
M3 - Article
AN - SCOPUS:79961135283
VL - 83
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 0163-1829
IS - 21
M1 - 214414
ER -