52 citations · 103 across the 10 of their papers we have counts for
10 papers
Sensitivity enhancement of an anomalous Hall effect magnetic sensor by means of second-order magnetic anisotropy
Hiroko Arai, Hiroshi Imamura
The sensing performance of anomalous Hall effect (AHE) magnetic sensors is investigated in terms of their sensitivity, the power spectrum of their voltage noise, and their detectiv…
1/f noise of a tiny tunnel magnetoresistance sensor originated from a wide distribution of bath correlation time
Hiroshi Imamura, Hiroko Arai, Rie Matsumoto +1
Tunnel magnetoresistance (TMR) sensor is a highly sensitive magnetic field sensor and is expected to be applied in various fields, such as magnetic recording, industrial sensing, a…
Characteristic time of transition from write error to retention error in voltage-controlled magnetoresistive random-access memory
Hiroko Arai, Hiroshi Imamura
Voltage controlled magnetoresistive random access memory (VC MRAM) is a promising candidate for a future low-power high-density memory. The main causes of bit errors in VC MRAM are…
Distribution of write error rate of spin-transfer-torque magnetoreistive random access memory caused by a distribution of junction parameters
Hiroshi Imamura, Hiroko Arai, Rie Matsumoto
Distribution of write error rate (WER) of spin-transfer-torque magnetoreistive random access memory (STT MRAM) caused by a distribution of resistance area product and anisotropy co…
Precession dynamics of a small magnet with non-Markovian damping: Theoretical proposal for an experiment to determine the correlation time
Hiroshi Imamura, Hiroko Arai, Rie Matsumoto +2
Recent advances in experimental techniques have made it possible to manipulate and measure the magnetization dynamics on the femtosecond time scale which is the same order as the c…
Vortex Dynamics-Mediated Low-Field Magnetization Switching in an Exchange-Coupled System
Weinan Zhou, Takeshi Seki, Hiroko Arai +2
A magnetic vortex has attracted significant attention since it is a topologically stable magnetic structure in a soft magnetic nanodisk. Many studies have been devoted to understan…
Role of Magnetic Field in Self-Oscillation of Nanomagnet Excited by Spin Torque
Tomohiro Taniguchi, Shingo Tamaru, Hiroko Arai +3
The critical current of the self-oscillation of spin torque oscillator (STO) consisting of a perpendicularly magnetized free layer and an in-plane magnetized pinned layer was studi…
Critical Field of Spin Torque Oscillator with Perpendicularly Magnetized Free Layer
Tomohiro Taniguchi, Hiroko Arai, Sumito Tsunegi +3
The oscillation properties of a spin torque oscillator consisting of a perpendicularly magnetized free layer and an in-plane magnetized pinned layer are studied based on an analysi…
Theoretical Study of Spin-Torque Oscillator with Perpendicularly Magnetized Free Layer
Tomohiro Taniguchi, Hiroko Arai, Hitoshi Kubota +1
The magnetization dynamics of spin torque oscillator (STO) consisting of a perpendicularly magnetized free layer and an in-plane magnetized pinned layer was studied by solving the…
Theoretical study of spin-torque oscillator coupled with a nano-magnet by dipole-dipole interaction
H. Arai, T. Taniguchi, H. Imamura
The dynamics of a spin-torque-oscillator (STO) coupled with a nano-magnet through dipole-dipole interaction was studied numerically by using the macrospin model for the application…