28 citations · 138 across the 21 of their papers we have counts for
8 papers · 1 filter
Magnetic field hysteresis of thermal conductivity in type-I and typy-II superconductors
Hiroto Arima, Miku Yoshida, Yoshikazu Mizuguchi
This study investigated the magnetic field () dependence of thermal conductivity () in type I (Pb) and type II (Nb) superconductors. The of Nb displayed hysteresis, showi…
Effect of annealing in eutectic high-entropy alloy superconductor NbScTiZr
Takeru Seki, Hiroto Arima, Yuta Kawasaki +3
We investigated the impact of annealing on the structural characteristics and superconducting critical temperature () of the eutectic high-entropy alloy (HEA) superco…
Pressure-induced volumetric negative thermal expansion in CoZr2 superconductor
Yuto Watanabe, Hiroto Arima, Saori Kawaguchi-Imada +10
We investigate the thermal expansion and superconducting properties of a CuAl2-type (tetragonal) superconductor CoZr2 under high pressures. We perform high-pressure synchrotron X-r…
Anomalous Field-Temperature Phase Diagram of Superconductivity in Sn-Pb Solder
Takumi Murakami, Hiroto Arima, Yoshikazu Mizuguchi
Sn-Pb solders are superconducting materials whose Sn and Pb are perfectly phase-separated. Recently, anomalous magnetic-flux trapping in a Sn45-Pb55 solder has been revealed where…
Nonvolatile Magneto-Thermal Switching in MgB2
Hiroto Arima, Yoshikazu Mizuguchi
Ongoing research explores thermal switching materials to control heat flow. Specifically, there has been interest in magneto-thermal switching (MTS) materials based on superconduct…
Observation of nonvolatile magneto-thermal switching in superconductors
Hiroto Arima, Md. Riad Kasem, Hossein Sepehri-Amin +5
Applying a magnetic field to a solid changes its thermal-transport properties. Although such magneto-thermal-transport phenomena are usually small effects, giant magneto-thermal re…
Superconductivity in In-doped AgPbBiTe3 compounds synthesized by high-pressure synthesis
Takahiro Sawahara, Hiroto Arima, Takayoshi Katase +3
NaCl-type metal tellurides (MTe) have been widely studied due to unique physical properties. We investigated the In-doping effects on structural and physical properties of Na-Cl ty…
Large magneto-thermal-switching ratio in superconducting Pb wires
Miku Yoshida, Hiroto Arima, Aichi Yamashita +2
Thermal switching by magnetic fields is one of the important functionalities in thermal management technologies. In low-temperature devices, superconducting states can be used as a…