Hiroyuki Hidaka

Negative Magnetization Phenomenon in TbNiC 2

Masataka Yamamoto, Hiroyuki Hidaka, Tatsuya Yanagisawa, Chihiro Tabata et autres

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Magnetic field angle dependence of the magnetic phase diagram in UNi4B

Hiroyuki Hidaka, Tatsuya Yanagisawa, Chihiro Tabata, Fusako Kon et autres

A uranium-based metallic compound UNi4⁢B with an orthorhombic structure exhibits antiferromagnetic (AFM) ordering at 𝑇N=20.4 K. Although an electric current-induced magnetization below 𝑇N has been observed in this compound [H. Saito et al., J. Phys. Soc. Jpn. 87, 033702 (2018)], its underlying …

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Magnetic field angle dependence of the magnetic phase diagram in UNi 4 B

Hiroyuki Hidaka, Tatsuya Yanagisawa, Chihiro Tabata, Fusako Kon et autres

A uranium-based metallic compound ${\mathrm{UNi}}_{4}\mathrm{B}$ with an orthorhombic structure exhibits antiferromagnetic (AFM) ordering at ${T}_{\mathrm{N}}=20.4$ K. Although an electric current-induced magnetization below ${T}_{\mathrm{N}}$ has been observed in this compound [H. Saito et al., J. Phys. Soc. Jpn. 87, 033702 (2018)], its underlying …

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Elastic Softening in Synthetic Diamonds

Tatsuya Yanagisawa, Ruo Hibino, Hiroyuki Hidaka, Hiroshi Amitsuka et autres

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Anisotropic Magnetic Field–Temperature Phase Diagrams in CeCoSi

Hiroyuki Hidaka, Shun Yanagiya, S. Onodera, Tatsuya Yanagisawa et autres

The Ce-based metallic compound CeCoSi with a tetragonal structure exhibits an antiferromagnetic ordering at TN = 9.4 K and a nonmagnetic (NM) ordering accompanied by a uniform lattice distortion at T0 ∼ 12 K. A magnetic field (H)-induced phase transition accompanied by …

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Polarized Neutron Diffraction Study on UPt2Si2

Fusako Kon, Chihiro Tabata, Hiraku Saito, Taro Nakajima et autres

We investigated the magnetic structure of the antiferromagnetic (AFM) ordered state (TN ∼ 34 K) in tetragonal UPt2Si2 using polarized and unpolarized neutron diffraction. Previous neutron scattering studies reported that this system possesses a simple AFM structure with a propagation vector, Q …

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Elastic Softening in Synthetic Diamonds

Tatsuya Yanagisawa, Ruo Hibino, Hiroyuki Hidaka, Hiroshi Amitsuka et autres

This study reveals a previously unreported phenomenon: elastic softening of synthetic diamonds at temperatures below 1 K. We present ultrasonic measurements on single-crystalline, non-irradiated synthetic diamonds--namely, type-IIa (colorless) and type-Ib (yellow) diamonds grown by high-pressure high-temperature (HPHT) synthesis, as well as type-IIa …

Polarized Neutron Diffraction Study on UPt$_{2}$Si$_{2}$

Fusako Kon, Chihiro Tabata, Hiraku Saito, Taro Nakajima et autres

We investigated the magnetic structure of the antiferromagnetic (AFM) ordered state ($T_{\rm N} \sim$ 34 K) in tetragonal UPt$_{2}$Si$_{2}$ using polarized and unpolarized neutron diffraction. Previous neutron scattering studies reported that this system possesses a simple AFM structure with a propagation vector, …

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In-plane anisotropy of single- q and multiple- q ordered phases in the antiferromagnetic metal CeRh2Si2

Hiraku Saito, Fusako Kon, Hiroyuki Hidaka, Hiroshi Amitsuka et autres

We performed magnetization, resistivity, and neutron diffraction measurements under uniaxial stress applied along the $[1\overline{1}0]$ direction on the tetragonal magnet ${\mathrm{CeRh}}_{2}{\mathrm{Si}}_{2}$ with commensurate magnetic orders. ${\mathrm{CeRh}}_{2}{\mathrm{Si}}_{2}$ has two successive antiferromagnetic (AFM) orders in zero magnetic field. The high temperature phase (AFM1 phase) …

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Elemental Dilution Effect on the Elastic Response due to a Quadrupolar Kondo Effect of the Non-Kramers System Y1−xPrxIr2Zn20

Ruo Hibino, Tatsuya Yanagisawa, Yoshito Mikami, Hiroyuki Hidaka et autres

We measured the elastic constants $\left(C_{11}-C_{12}\right)/2$ and $C_{44}$ of the non-Kramers system $\rm{Y_{0.63}Pr_{0.37}Ir_{2}Zn_{20}}$ (Pr-37% system) by means of ultrasound to check how the single-site quadrupolar Kondo effect is modified by increasing the Pr concentration. The Curie-like softening of $\left(C_{11}-C_{12}\right)/2$ between 1 and …

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In-plane anisotropy of the single-$q$ and multiple-$q$ ordered phases in the antiferromagnetic metal CeRh$_2$Si$_2$ unveiled by the bulk measurements under uniaxial stress and neutron scattering

Hiraku Saito, Fusako Kon, Hiroyuki Hidaka, Hiroshi Amitsuka et autres

We performed magnetization, resistivity, and neutron diffraction measurements under uniaxial stress applied along [1-10] direction on the tetragonal magnet CeRh$_2$Si$_2$ with commensurate magnetic orders. CeRh$_2$Si$_2$ has two successive antiferromagnetic (AF) orders in zero magnetic field. The high temperature phase (AF1 phase) has …

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Correlation between antiferromagnetic and charge-density-wave order in UPt$_{2}$Si$_{2}$ studied by resonant X-Ray scattering

Fusako Kon, Chihiro Tabata, Kodai Miura, Ruo Hibino et autres

Relationship between antiferromagnetic order with Néel temperature of 35 K and charge-density-wave (CDW) order below 320 K of UPt _2 2 Si _2 2 has been investigated by resonant X-ray scattering measurements. We have found that a resonant scattering signal develops below …

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