2019/04/30 by Ravinder Kumar, B. Samantaray, Z. Hossain · 26 citations
Engineering · Materials Science · Physics and Astronomy · #Anisotropy #Condensed matter physics #Epitaxy #Ferrimagnetism #Ferromagnetic resonance #Ferromagnetism #Gadolinium gallium garnet #Magnetic Properties and Applications #Magnetic anisotropy #Magnetic field #Magnetic properties of thin films #Magnetization #Magneto-Optical Properties and Applications #Magnetocrystalline anisotropy #Materials science #Nanotechnology #Optics #Physics #Spintronics #Thin film #Yttrium iron garnet #cond-mat.mes-hall
paper · pdf · doi:10.1088/1361-648x/ab2e93
published in Journal of Physics Condensed Matter 31(43), 435802 (IOP Publishing) · 12 Pages, 7 Figures
openalex publication_date 2019/07/02 · arxiv created 2020/06/06 · arxiv updated 2020/06/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Abstract Bismuth-doped Yttrium iron garnet (Bi:YIG) thin films known for large magneto-optical activity with low losses still need to get probed for its magnetization dynamics. We demonstrate a controlled tuning of magnetocrystalline anisotropy in Bi-doped Y 3 Fe 5 O 12 (Bi:YIG) films of high crystalline quality using growth induced epitaxial strain on [1 1 1]-oriented Gd 3 Ga 5 O 12 (GGG) substrate. We optimize a growth protocol to get thick highly-strained epitaxial films showing large magneto-crystalline anisotropy, compare to thin films prepared using a different protocol. Ferromagnetic resonance measurements establish a linear dependence of the out-of-plane uniaxial anisotropy on the strain induced rhombohedral distortion of Bi:YIG lattice. Interestingly, the enhancement in the magnetoelastic constant due to an optimum substitution of Bi 3+ ions with strong spin orbit coupling does not strongly affect the precessional damping (∼ ). Large magneto-optical activity, reasonably low damping, large magnetocrystalline anisotropy and large magnetoelastic coupling in Bi:YIG are the properties that may help Bi:YIG emerge as a possible material for photo-magnonics and other spintronics applications.