47 citations · 332 across the 18 of their papers we have counts for
15 papers · 1 filter
Large Spin Hall Effect in High-Entropy Alloy/CoFeB Bilayers
Takahide Kubota, Kazuya Z. Suzuki, Yoshiyuki Hirayama +2
High-entropy alloys (HEAs) exhibit various physical properties, such as high microhardness for structured materials and high efficiency for catalysis. These features are recognized…
Perpendicular magnetic anisotropy of an ultrathin Fe layer grown on NiO(001)
Soki Kobayashi, Hiroki Koizumi, Hideto Yanagihara +5
The magnetic anisotropy and magnetic interactions at the interface between Fe and NiO(001) were investigated. Depending on the growth conditions of the NiO(001) layers and the post…
Magnetoelastic anisotropy in Heusler-type MnCoGa films
Takahide Kubota, Daichi Takano, Yohei Kota +10
Perpendicular magnetization is essential for high-density memory application using magnetic materials. High-spin polarization of conduction electrons is also required for realizing…
Perpendicular magnetic anisotropy in ultra-thin CuSb-type (Mn-Cr)AlGe films onto thermally oxidized silicon substrates
Takahide Kubota, Keita Ito, Rie Y Umetsu +1
Perpendicularly magnetized films showing small saturation magnetization, , are essential for spin-transfer-torque writing type magnetoresistive random access memories…
Enhancement of anomalous Nernst effect in Ni/Pt superlattice
T. Seki, Y. Sakuraba, K. Masuda +7
We report an enhancement of the anomalous Nernst effect (ANE) in Ni/Pt (001) epitaxial superlattices. The transport and magneto-thermoelectric properties were investigated for the…
Interlayer exchange coupling through Ir-doped Cu spin Hall material
Hiroto Masuda, Takeshi Seki, Yong-Chang Lau +2
Metallic superlattices where the magnetization vectors in the adjacent ferromagnetic layers are antiferromagnetically coupled by the interlayer exchange coupling through nonmagneti…
Spin-charge conversion in NiMnSb Heusler alloy films
Zhenchao Wen, Zhiyong Qiu, Sebastian Tolle +7
Half-metallic Heusler alloys are attracting considerable attention because of their unique half-metallic band structures which exhibit high spin polarization and yield huge magneto…
Spin-Hall and Anisotropic Magnetoresistance in Ferrimagnetic Co-Gd / Pt layers
W. Zhou, T. Seki, T. Kubota +2
We present the Co-Gd composition dependence of the spin-Hall magnetoresistance (SMR) and anisotropic magnetoresistance (AMR) for ferrimagnetic Co100-xGdx / Pt bilayers. With Gd con…
Nonlinear electric field effect on perpendicular magnetic anisotropy in Fe/MgO interfaces
Qingyi Xiang, Zhenchao Wen, Hiroaki Sukegawa +5
The electric field effect on magnetic anisotropy was studied in an ultrathin Fe(001) monocrystalline layer sandwiched between Cr buffer and MgO tunnel barrier layers, mainly throug…
Voltage control of magnetic anisotropy in epitaxial Ru/Co2FeAl/MgO heterostructures
Zhenchao Wen, Hiroaki Sukegawa, Takeshi Seki +3
Voltage control of magnetic anisotropy (VCMA) in magnetic heterostructures is a key technology for achieving energy-efficiency electronic devices with ultralow power consumption. H…
Direct measurement of the magnetic anisotropy field in Mn--Ga and Mn--Co--Ga Heusler films
Ciarán Fowley, Siham Ouardi, Takahide Kubota +10
The static and dynamic magnetic properties of tetragonally distorted Mn--Ga based alloys were investigated. Static properties are determined in magnetic fields up to 6.5~T using SQ…
Magnetic dichroism study on MnCoGa thin film using a combination of X-ray absorption and photoemission spectroscopy
Siham Ouardi, Gerhard H. Fecher, Takahide Kubota +4
Using circularly polarised radiation and a combination of bulk-sensitive hard X-ray photoelectron spectroscopy and X-ray-absorption spectroscopy (XAS) we studied the electronic and…
Investigation on MnGa/MgO interface for magnetic tunneling junctions
C. E. ViolBarbosa, S. Ouardi, T. Kubota +6
The MnGa Heusler compound and related alloys are the most promising materials for the realization of spin-transfer-torque switching in magneto tunneling junctions. Improved per…
Magnetic and transport properties of tetragonal- or cubic-Heusler-type Co-substituted Mn-Ga epitaxial thin films
Takahide Kubota, Siham Ouardi, Shigemi Mizukami +4
The composition dependence of the structural, magnetic, and transport properties of epitaxially grown Mn-Co-Ga films were investigated. The crystal structure was observed to change…
Perpendicularly magnetized Mn-Co-Ga-based thin films with high coercive field
Siham Ouardi, Takahide Kubota, Gerhard H. Fecher +5
MnCoGa epitaxial thin films were grown on MgO substrates by magnetron co-sputtering. Structures were tetragonal or cubic depending on Co content. Composition dependen…