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Akademický článek

Experimental exploration of ErB2 and SHAP analysis on a machine-learned model of magnetocaloric materials for materials design

Autor: Kensei Terashima, Pedro Baptista de Castro, Akiko Takahashi Saito, Takafumi D Yamamoto, Ryo Matsumoto, Hiroyuki Takeya, Yoshihiko Takano

Publikováno v: Science and Technology of Advanced Materials: Methods, Vol 3, Iss 1 (2023)

Stimulated by a recent report of a giant magnetocaloric effect in HoB2 found via machine-learning predictions, we have explored the magnetocaloric properties of a related compound ErB2 that has remained the last ferromagnetic material among the rare-

Externí odkaz: https://doaj.org/article/a1e7ad9fc27447b4ba79336b35ff937c

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Akademický článek

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

Autor: Noriki Terada, Hiroaki Mamiya, Hiraku Saito, Taro Nakajima, Takafumi D. Yamamoto, Kensei Terashima, Hiroyuki Takeya, Osamu Sakai, Shinichi Itoh, Yoshihiko Takano, Masashi Hase, Hideaki Kitazawa

Publikováno v: Communications Materials, Vol 4, Iss 1, Pp 1-9 (2023)

Magnetic refrigeration materials containing rare-earth ions are promising for hydrogen liquefaction and energy storage applications. Here, the role of crystal-field level splitting on magnetic entropy change is systematically investigated, comparing

Externí odkaz: https://doaj.org/article/d6c9bb420f704c7083387b7b94257ac4

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Akademický článek

Effect of Dy substitution in the giant magnetocaloric properties of HoB2

Autor: Pedro Baptista de Castro, Kensei Terashima, Takafumi D. Yamamoto, Suguru Iwasaki, Ryo Matsumoto, Shintaro Adachi, Yoshito Saito, Hiroyuki Takeya, Yoshihiko Takano

Publikováno v: Science and Technology of Advanced Materials, Vol 21, Iss 1, Pp 849-855 (2020)

Recently, a massive magnetocaloric effect near the liquefaction temperature of hydrogen has been reported in the ferromagnetic material HoB2. Here we investigate the effects of Dy substitution in the magnetocaloric properties of Ho1-xDyxB2 alloys (x

Externí odkaz: https://doaj.org/article/d6c7ad3a12824164a8a4f914af0149a4

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Magnetic Refrigerant Materials for Hydrogen Liquefaction by Active Magnetic Regenerative Refrigeration

Autor: Akiko T. SAITO, Hiroyuki TAKEYA, Takafumi D. YAMAMOTO, Koji KAMIYA, Koichi MATSUMOTO, Takenori NUMAZAWA

Publikováno v: TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan). 58:51-57

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::edc587bf62b3d2df83b15bc45f53e0eb
https://doi.org/10.2221/jcsj.58.51

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Akademický článek

Field-induced phase transitions of tetramer-singlet states in synthetic SU(4) magnets

Autor: Y. Miyazaki, D. Yamamoto, G. Marmorini, N. Furukawa

Publikováno v: AIP Advances, Vol 11, Iss 2, Pp 025202-025202-4 (2021)

Phase transitions of quantum dimer magnets can be explained in terms of Bose-Einstein condensation of magnons. Here we consider a natural extension of the dimer magnets to SU(4)-symmetric tetramer systems, which could be created with four nuclear-spi

Externí odkaz: https://doaj.org/article/4574d285ca654446bbb30ee165f24f8d

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Akademický článek

Optimization of printed sensors to monitor sodium, ammonium, and lactate in sweat

Autor: Alla M. Zamarayeva, Natasha A. D. Yamamoto, Anju Toor, Margaret E. Payne, Caleb Woods, Veronika I. Pister, Yasser Khan, James W. Evans, Ana Claudia Arias

Publikováno v: APL Materials, Vol 8, Iss 10, Pp 100905-100905-10 (2020)

We describe the optimization of a flexible printed electrochemical sensing platform to monitor sodium ion (Na+), ammonium ion (NH4+), and lactate in human sweat. We used previously reported material systems and adapted them to scalable fabrication te

Externí odkaz: https://doaj.org/article/7072d943229649b88574629ca106528d

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Akademický článek

Crystal structure of (η4-cyclooctadiene)(3,3′-dimesityl-1,1′-methylenediimidazoline-2,2′-diylidene)nickel(0) tetrahydrofuran monosolvate

Autor: Carlos D. Yamamoto, Zijie Zhang, Sabine Chantal E. Stieber

Publikováno v: Acta Crystallographica Section E: Crystallographic Communications, Vol 74, Iss 10, Pp 1396-1399 (2018)

The crystal structure of the title compound, [Ni(C25H28N4)(C8H12)]·C4H8O or (MesNHC2Me)Ni(COD), which contains a bidentate N-heterocyclic carbene (NHC) ligand with mesityl aryl groups is reported. The complex at 100 K has monoclinic (P21/c) symmetry

Externí odkaz: https://doaj.org/article/1a97a32a026a4e3fb5585450dea3451f

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