A5049042836- Magnetic properties of thin films
- Physics of Superconductivity and Magnetism
- Magnetic and transport properties of perovskites and related materials
- Magnetic Properties and Applications
- Quantum and electron transport phenomena
- Fluoride Effects and Removal
- Immune Cell Function and Interaction
- Semiconductor materials and devices
- Semiconductor Quantum Structures and Devices
- T-cell and B-cell Immunology
- Copper Interconnects and Reliability
- Metallic Glasses and Amorphous Alloys
- Dental Health and Care Utilization
- Theoretical and Computational Physics
- Oral microbiology and periodontitis research
- Semiconductor materials and interfaces
- Magnetic Properties of Alloys
- Advanced Memory and Neural Computing
- Rare-earth and actinide compounds
- Advanced Condensed Matter Physics
- Immunotherapy and Immune Responses
Tohoku University
1976-2023
Institute for Materials Research, Tohoku University
2023
Nagoya University
2021-2023
Ricoh (Japan)
1984
Scardovia wiggsiae has been detected from caries in children and adolescents suggested to be a caries-associated microorganism. To investigate the cariogenic potential of S. wiggsiae, we examined carbohydrate metabolism acid productivity, fluoride sensitivity mechanism by which inhibits metabolism, this bacterium. metabolized glucose reduced environmental pH 3.5. It mainly produced acetic glucose, together with small amounts lactic formic acid. The 50% inhibitory concentration for production...
Detailed magnetic measurements were carried out on amorphous alloys: Fe‐Co‐P‐C, Fe‐Cr‐P‐C and Co‐Fe‐SI‐B. The saturation magnetizations (Ms) are obtained for these alloys using the formula dM/dH = Ms(a/H2) + Xo. spin‐wave dispersion coefficients (D) also from low temperature magnetization measurements. contribution of structural disorder to properties is found directly by comparing results Fe80P13C7 Co75Si15B10 with those corresponding single‐phase crystalline bcc Fe‐P‐C hcp Co‐Si‐B, which...
Abstract Spin pumping enables the generation of d.c. and gigahertz-band (GHz-band) voltages from an applied microwave via magnetization dynamics when combined with inverse spin Hall effects. However, generating such in in-between frequency region, or megahertz (MHz) band, has been difficult since ferromagnetic resonance usually occurs GHz band. Here we show that spite GHz-band microwaves applied, MHz-band can be generated by use nonlinear Y 3 Fe 5 O 12 . The mechanism is ascribed to...
We study interskyrmion interactions and stable spin configurations in a two-dimensional chiral magnet, particular, focusing on the effects of two in-plane anisotropies: tilted magnetic field magnetocrystalline anisotropy (011) thin film. Using analytical micromagnetic calculations with ignoring dipole-dipole interactions, we find that slight deformation skyrmion shape makes interaction anisotropic weakly attractive. Furthermore, when is comparable to Zeeman energy, skyrmions embedded uniform...
Abstract The natural killer group 2 membrane D (NKG2D) receptor is an NK-activating that plays important role in host defense against tumors and viral infections. Although the marmoset reliable animal model, especially for study of human-specific infections, functional characterization NKG2D on NK cells has not previously been conducted. In present study, we investigated a subpopulation express exhibit cytolytic potential. On basis their CD16 CD56 expression patterns, can be classified into...
The new method to suppress the hillock formation and improve electromigration resistance is presented here. By implanting ion an Al-Si film, density size of are reduced drastically improved. dose dependency, energy species dependency structural analysis data have been studied. ion-implanted film has amorphous or microcrystalline surface region, this region considered prevent resistance. sheet implanted found be same as that unimplanted film. This technolgy widely applicable multilevel metal...
To commercialize stable, highly-integrated, and low-power-consuming magnetic memories of skyrmions, stable control their motion are crucial. The key is to manipulate the inter-skyrmion interactions. However, conventional circular skyrmions have only isotropic repulsion mechanism inducing attraction has been unclear. We theoretically find two such mechanisms, distortion skyrmion shape formation domains. Remarkably, latter induces strong which can be tuned by orders magnitude, tilting external field.
To commercialize stable, highly-integrated, and low-power-consuming magnetic memories of skyrmions, stable control their motion is crucial. Manipulating the inter-skyrmion interactions key to achieving this goal. We find that distortion skyrmion shape can induce interskyrmion attraction between atomic-scale small similar larger skyrmions. Also, interaction smaller skyrmions reaches further, when scaled by size, than The continuum model still capable explaining behavior. Moreover, formation...
An anomaly in the magnon dispersion of amorphous ferromagnet Co$_{4}$P, often referred to as a `roton-like' excitation, attracted much attention half century ago. With current interest heat and spin currents magnets, we apply modern simulation methods, combining reverse Monte Carlo build atomic structure stochastic Landau-Lifshitz equation for dynamics, re-investigate magnetic excitation spectrum. We find two valleys, one at origin another finite wavenumber close observations, but without...