2018/10/17 by Qianbiao Liu, Kangkang Meng, Liu, Qianbiao +11 · 1 citation
Engineering · Physics and Astronomy · #Anisotropy #Characterization and Applications of Magnetic Nanoparticles #Condensed matter physics #FOS: Physical sciences #Ferromagnetic resonance #Ferromagnetism #Hall effect #Magnetic anisotropy #Magnetic field #Magnetic properties of thin films #Magnetization #Magneto-Optical Properties and Applications #Materials Science (cond-mat.mtrl-sci) #Materials science #Nanotechnology #Neutron reflectometry #Neutron scattering #Optics #Physics #Scattering #Spin Hall effect #Spin polarization #Spintronics #Strongly Correlated Electrons (cond-mat.str-el) #Thin film #Yttrium iron garnet #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.48550/arxiv.1810.07384
published in arXiv (Cornell University) (Cornell University)
openalex publication_date 2018/10/17 · arxiv created 2020/02/28 · arxiv updated 2020/03/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The Y3Fe5O12 (YIG) films with perpendicular magnetic anisotropy (PMA) have recently attracted a great deal of attention for spintronics applications. Here, we report the induced PMA in the ultrathin YIG films grown on (Gd2.6Ca0.4)(Ga4.1Mg0.25Zr0.65)O12 (SGGG) substrates by epitaxial strain without preprocessing. Reciprocal space mapping shows that the films are lattice-matched to the substrates without strain relaxation. Through ferromagnetic resonance and polarized neutron reflectometry measurements, we find that these YIG films have ultra-low Gilbert damping constant with a magnetic dead layer as thin as about 0.3 nm at the YIG/SGGG interfaces. Moreover, the transport behavior of the Pt/YIG/SGGG films reveals an enhancement of spin mixing conductance and a large non-monotonic magnetic field dependence of anomalous Hall effect as compared with the Pt/YIG/Gd3Ga5O12 (GGG) films. The non-monotonic anomalous Hall signal is extracted in the temperature range from 150 to 350 K, which has been ascribed to the possible non-collinear magnetic order at the Pt/YIG interface induced by uniaxial strain.