Open AccessThe Magnetic Microstructure of YIG / GGG Films: Mossbauer Studies in the External Magnetic Fields
Author(s) -
Andrij Kotsyubynsky,
V.V. Moklyak,
І. М. Фодчук
Publication year - 2019
Publication title -
fìzika ì hìmìâ tverdogo tìla
Language(s) - English
Resource type - Journals
eISSN - 2309-8589
pISSN - 1729-4428
DOI - 10.15330/pcss.20.2.202-208
Subject(s) - yttrium iron garnet , materials science , gadolinium gallium garnet , hyperfine structure , microstructure , magnetic field , magnetic domain , condensed matter physics , mössbauer spectroscopy , gadolinium , nuclear magnetic resonance , isotropy , magnetization , optics , metallurgy , composite material , chemistry , epitaxy , crystallography , physics , atomic physics , layer (electronics) , quantum mechanics
The Mossbauer studies of yttrium iron garnet (YIG) films grown on the gadolinium gallium garnet (GGG) substrate was realized for different films thickness (2.85 and 5.42 mm) at the applied external magnetic field. It is shown that the main changes in the magnetic microstructure of YIG/GGG films are occurred at magnetic field value up to 2.20 kOe. The changes of the hyperfine magnetic fields on the iron nuclei have been investigated and its isotropic component was analyzed. It was determined that the domain structure changes (in particular, the domains width enlarging) under the applied magnetic field increase with the film thickness decreasing.