Explanipedia

Elastic and inelastic neutron scattering experiments under high pressure in the frustrated antiferromagnet Open

Noriki Terada, D. D. Khalyavin, Pascal Manuel, Shinichiro Asai, Takatsugu Masuda , et al. · 2024

The frustrated antiferromagnet ${\text{CuFeO}}_{2}$ exhibits pressure-induced complex magnetic phase transitions from the commensurate collinear (CM1) phase to several incommensurate noncollinear phases. To study the effect of high pressur…

Spin-lattice-coupled helical magnetic order in breathing pyrochlore magnets, CuAlCr$_{4}$S$_{8}$ and CuGaCr$_{4}$S$_{8}$ Open

Masaki Gen, Taro Nakajima, Hiraku Saito, Y. Tokunaga, T. Arima · 2024

We report low-temperature powder X-ray and neutron diffraction studies on breathing pyrochlore magnets Cu$M$Cr$_{4}$S$_{8}$ ($M$ = Al, Ga), which undergo a magnetic transition at $T_{\rm N} \approx$ 21 and 31 K for {$M$ = Al and Ga, respec…

Stroboscopic time-of-flight neutron diffraction in long pulsed magnetic fields Open

Taro Nakajima, Masao Watanabe, Yasuhiro Inamura, Kazuki Matsui, T. Kanda , et al. · 2024

We present proof-of-principle experiments of stroboscopic time-of-flight (TOF) neutron diffraction in long pulsed magnetic fields. By utilizing electric double-layer capacitors, we developed a long pulsed magnet for neutron diffraction mea…

Multistep topological transitions among meron and skyrmion crystals in a centrosymmetric magnet Open

H. Yoshimochi, R. Takagi, Jian Ju, N. D. Khanh, Hiraku Saito , et al. · 2024

Polarized Neutron Diffraction Study on UPt<sub>2</sub>Si<sub>2</sub> Open

Fusako Kon, Chihiro Tabata, Hiraku Saito, Taro Nakajima, Hiroyuki Hidaka , et al. · 2024

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 posses…

Sample Environment of the HRC Spectrometer at J-PARC Open

Daichi Ueta, Shinichi Itoh, Takatsugu Masuda, Tetsuya Yokoo, Taro Nakajima , et al. · 2024

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

Fusako Kon, Chihiro Tabata, Hiraku Saito, Taro Nakajima, Hiroyuki Hidaka , et al. · 2023

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 t…

Colossal negative magnetoresistance in field-induced Weyl semimetal of magnetic half-Heusler compound Open

Kentaro Ueda, Tonghua Yu, Motoaki Hirayama, Ryo Kurokawa, Taro Nakajima , et al. · 2023

Stroboscopic Time-of-Flight Neutron Diffraction in Long Pulsed Magnetic Fields Open

Taro Nakajima, Masao Watanabe, Yasuhiro Inamura, Kazuki Matsui, T. Kanda , et al. · 2023

We present proof-of-principle experiments of stroboscopic time-of-flight (TOF) neutron diffraction in long pulsed magnetic fields. By utilizing electric double-layer capacitors, we developed a long pulsed magnet for neutron diffraction mea…

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 Open

Hiraku Saito, Fusako Kon, Hiroyuki Hidaka, Hiroshi Amitsuka, Kwanghee Cho , et al. · 2023

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…

Direct observations of spin fluctuations in spin-hedgehog-anti-hedgehog lattice states in MnSi$_{1-x}$Ge$_x$ ($x=0.6$ and $0.8$) at zero magnetic field Open

Seno Aji, T. Oda, Yukako Fujishiro, Naoya Kanazawa, Hiraku Saito , et al. · 2023

The helimagnetic compounds MnSi$_{1-x}$Ge$_{x}$ show the three-dimensional multiple-$q$ order as referred to as spin-hedgehog-anti-hedgehog (SHAH) lattice. Two representative forms of SHAH are cubic-3$q$ lattice with $q \| \langle100\rangl…

Colossal negative magnetoresistance in field-induced Weyl semimetal of magnetic half-Heusler compound Open

Kentaro Ueda, Tonghua Yu, Motoaki Hirayama, Ryo Kurokawa, Taro Nakajima , et al. · 2023

The discovery of topological insulators and semimetals triggered enormous interest in exploring emergent electromagnetic responses in solids. To explore multifunctional topological states, a particular attention has been focused on ternary…

Crystal electric field level scheme leading to giant magnetocaloric effect for hydrogen liquefaction Open

Noriki Terada, Hiroaki Mamiya, Hiraku Saito, Taro Nakajima, Takafumi D. Yamamoto , et al. · 2023

In recent years, magnetic refrigeration has attracted considerable attention for hydrogen liquefaction. Most materials used for magnetic refrigeration contain heavy rare earth ions with complex crystalline electric field energy splittings,…

Local Structural Change of V–Ti–Cr Alloy Hydrides Depending on Hydrogen Absorption/Desorption Cycles Open

Kazutaka Ikeda, Sho Sashida, Toshiya Otomo, H. Ohshita, T. Honda , et al. · 2023

Polarized neutron scattering study on the centrosymmetric skyrmion host material Gd2PdSi3 Open

Jiwon Ju, Hiraku Saito, Takashi Kurumaji, Max Hirschberger, Akiko Kikkawa , et al. · 2022

We have investigated magnetic structures of the centrosymmetrric skyrmion material Gd2PdSi3 by means of polarized neutron scattering near zero field with an isotope-160Gd-enriched single crystal. In a previous study, magnetic structures in…

Square and rhombic lattices of magnetic skyrmions in a centrosymmetric binary compound Open

R. Takagi, Naofumi Matsuyama, Victor Ukleev, Le Yu, J. S. White , et al. · 2022

Magnetic skyrmions are topologically stable swirling spin textures with particle-like character, and have been intensively studied as a candidate of high-density information bit. While magnetic skyrmions were originally discovered in nonce…

Electric Quadrupolar Contributions in the Magnetic Phases of Open

Tatsuya Yanagisawa, Hiroaki Matsumori, Hiraku Saito, Hiroyuki Hidaka, Hiroshi Amitsuka , et al. · 2021

We present acoustic signatures of the electric quadrupolar degrees of freedom in the honeycomb-layer compound UNi_{4}B. The transverse ultrasonic mode C_{66} shows softening below 30 K both in the paramagnetic phase and antiferromagnetic p…

Dynamical Studies in Condensed Matter on High Resolution Chopper Spectrometer (HRC) —2nd Phase of HRC Project— Open

Shinichi Itoh, Takatsugu Masuda, Tetsuya Yokoo, H. Yoshizawa, Minoru Soda , et al. · 2021

New definition of post-hepatectomy liver failure after major hepatectomy for perihilar cholangiocarcinoma Open

T. Kawamura, Takehiro Noji, Hiraku Saito, Kazuhiro Tanaka, Yoshinobu Nakanishi , et al. · 2019

Magnetoelastic phenomena in antiferromagnetic uranium intermetallics: The case Open

Michal Vališka, Hiraku Saito, Tatsuya Yanagisawa, Chihiro Tabata, Hiroshi Amitsuka , et al. · 2018

Thermal expansion, magnetostriction and magnetization measurements under\nmagnetic field and hydrostatic pressure were performed on a\n$\\mathrm{UAu_{2}Si_{2}}$ single crystal. They revealed a large anisotropy of\nmagnetoelastic properties…

Neutron diffraction study on single-crystalline Open

Chihiro Tabata, M. Klicpera, B. Ouladdiaf, Hiraku Saito, Michal Vališka , et al. · 2017

The magnetic structure of tetragonal UAu2Si2 was investigated by single-crystal neutron-diffraction experiments. Below T-N= 20 K it orders antiferromagnetically with a propagation vector of k = (2/3,0,0) and magnetic moments of uranium ion…

Peculiar magnetism of Open

Chihiro Tabata, Naoyuki Miura, Klára Uhlířová, Michal Vališka, Hiraku Saito , et al. · 2016

Single-crystalline UAu$_2$Si$_2$ has been grown by a floating-zone melting method, and its magnetic, thermal and transport properties have been investigated through measurements of magnetization, specific heat and electrical resistivity to…

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