Growth and properties of Y3Fe5O12 - based nanoheterostructures for magnonic applications

Yttrium iron garnet (Y3Fe5O12, YIG) is a well-known unique magnetic material, which found numerous applications in microwave technique and other fields. For further development of YIG-based devices for magnonic applications, it is desirable to control magnetic properties of YIG nanofilms. In this work, considerable attention was paid to formation and properties of the interfaces in heterostructures with 5-35 nm thick YIG epitaxial layers grown by laser molecular beam epitaxy on (Gd3Ga5O12, GGG) and (Nd3Ga5O12, NdGG) substrates. For characterization of magnetic properties of the heterostructures vectorial MOKE, VSM, XMCD, XRMR, PNR, FMR & SW propagation measurements were carried out. It was shown that proximity effects in Co/YIG nanostructures and strain engineering in YIG/NdGG heterostructures are very useful for modification of YIG nanolayer magnetic properties.

1.    B. B. Krichevtsov, S. V. Gastev, S. M. Suturin, V. V. Fedorov, A. M. Korovin, V. E. Bursian, A. G. Banshchikov, M. P. Volkov, M. Tabuchi & N. S. Sokolov, Magnetization reversal in YIG/GGG(111) nano¬heterostructures grown by laser molecular beam epitaxy, Sci. &Technol. Advanced Materials 18, 351 (2017)

2.    N. S. Sokolov, V. V. Fedorov, A. M. Korovin, S. M. Suturin, D. A. Baranov, S. V. Gastev, B. B. Krichevtsov, K. Yu. Maksimova, A. I. Grunin, V. E. Bursian, L. V. Lutsev, and M. Tabuchi, Thin yttrium iron garnet films grown by pulsed laser deposition: Crystal structure,static, and dynamic magnetic properties, J. Appl. Phys. 119, 023903 (2016)

3.    L. V. Lutsev, A. M. Korovin, V. E. Bursian, S. V. Gastev, V. V. Fedorov, S. M. Suturin, and N. S. Sokolov, Low-relaxation spin waves in laser-molecular-beam epitaxy grown nanosized yttrium iron garnet films, Appl. Phys. Lett. 108, 182402 (2016)