Thin yttrium iron garnet films grown by pulsed laser deposition: Crystal structure, static, and dynamic magnetic properties

Journal Article · Thu Jan 14 00:00:00 EST 2016 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4939678· OSTI ID:22499258

Fedorov, V. V.; Korovin, A. M.; Suturin, S. M.; Baranov, D. A.; Gastev, S. V.; Krichevtsov, B. B.; Bursian, V. E.; Lutsev, L. V. ^[1]; Maksimova, K. Yu.; Grunin, A. I. ^[2]; Tabuchi, M. ^[3]

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1. Ioffe Physical-Technical Institute of Russian Academy of Sciences, St. Petersburg 194021 (Russian Federation)
2. Immanuel Kant Baltic Federal University, Kaliningrad 236041 (Russian Federation)
3. Synchrotron Radiation Research Center, Nagoya University, Nagoya 464-8603 (Japan)

Pulsed laser deposition has been used to grow thin (10–84 nm) epitaxial layers of Yttrium Iron Garnet Y{sub 3}Fe{sub 5}O{sub 12} (YIG) on (111)–oriented Gadolinium Gallium Garnet substrates at different growth conditions. Atomic force microscopy showed flat surface morphology both on micrometer and nanometer scales. X-ray diffraction measurements revealed that the films are coherent with the substrate in the interface plane. The interplane distance in the [111] direction was found to be by 1.2% larger than expected for YIG stoichiometric pseudomorphic film indicating presence of rhombohedral distortion in this direction. Polar Kerr effect and ferromagnetic resonance measurements showed existence of additional magnetic anisotropy, which adds to the demagnetizing field to keep magnetization vector in the film plane. The origin of the magnetic anisotropy is related to the strain in YIG films observed by XRD. Magneto-optical Kerr effect measurements revealed important role of magnetization rotation during magnetization reversal. An unusual fine structure of microwave magnetic resonance spectra has been observed in the film grown at reduced (0.5 mTorr) oxygen pressure. Surface spin wave propagation has been demonstrated in the in-plane magnetized films.

• OSTI ID: 22499258
• Journal Information: Journal of Applied Physics, Vol. 119, Issue 2; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMIC FORCE MICROSCOPY
ENERGY BEAM DEPOSITION
EPITAXY
FERRITE GARNETS
FERROMAGNETIC RESONANCE
FINE STRUCTURE
GADOLINIUM
GALLIUM
IRON OXIDES
KERR EFFECT
LASER RADIATION
MAGNETIC PROPERTIES
MAGNETIZATION
MICROWAVE RADIATION
PULSED IRRADIATION
SPIN WAVES
TRIGONAL LATTICES
X-RAY DIFFRACTION
YTTRIUM
YTTRIUM COMPOUNDS