Perfect kagome-lattice antiferromagnets with Jeff = 1/2: The Co2+-analogs of copper minerals volborthite and vesignieite
Y. Haraguchi, T. Ohnoda, A. Matsuo, K. Kindo, and H. Aruga Katori Physical Review B, 106, 214421 (2022)
Improvement of optical transmittance of SiO2 surface by femtosecond-laser-induced homogeneous nanostructure formation
M. Edakubo, L. J. Richter, Y. Haraguchi, H. Aruga Katori, J. Ihlemann, and G. Miyaji Optical Materials Express, 12, 3982-3989 (2022).
Observation of topological flat bands in the kagome semiconductor Nb3Cl8
Z. Sun, H. Zhou, C. Wang, S. Kumar, D. Geng, S. Yue, X. Han, Y. Haraguchi, K. Shimada, P. Cheng, L. Chen, Y. Shi, K. Wu, S. Meng, B. Feng Nano Letters, 22, 4596 (2022).
Magnetism of AlxFe2-xGeO5 with Andalusite Structure
K. Kakimoto, S. Takada, H. Ohta, Y. Haraguchi, M. Hagihala, S. Torii, T. Kamiyama, H. Mitamura, M. Tokunaga, A. Hatakeyama, and H. Aruga Katori Journal of the Physical Society of Japan, 91, 054704 (2022).
Formation of the metastable iron(III) germanate Fe2GeO5 through kinetic control of the oxidative reaction
K. Kakimoto, Y. Ohki, S. Takada, Y. Haraguchi, A. Yamamoto, and H. Aruga Katori Chemistry Letters, 51, 451-454 (2022).
Spin-glass transition in the spin-orbit-entangled Jeff = 0 Mott insulating double-perovskite ruthenate
H. Yatsuzuka, Y. Haraguchi, A. Matsuo, K. Kindo, and H. Aruga Katori Scientific Reports, 12, 2429 (2022).
Quantum antiferromagnet bluebellite comprising a maple-leaf lattice made of spin-1/2 Cu2+ ions
Y. Haraguchi, A. Matsuo, K. Kindo, and Z. Hiroi Physical Review B, 104, 174439 (2021).
Metallic state in the vicinity of molecular orbital crystallization in the d1 thiospinel ZnTi2S4 prepared via a reductive ion-exchange reaction
Y. Haraguchi, H. Arikai, and H. Aruga Katori Journal of Physics: Condensed Matter, 33, 395603 (2021).
4d3 Ru5+ triangular lattice antiferromagnets: layered rock-salt b-Li3Mg2RuO6 and ion-exchanged delafossite Ag3Mg2RuO6
Y. Haraguchi, K. Kakimoto, and H. Aruga Katori Journal of Solid State Chemistry, 299, 122171 (2021).
Strong antiferromagnetic interaction owing to a large trigonal distortion in the spin-orbit-coupled honeycomb lattice iridate CdIrO3
Y. Haraguchi, and H. Aruga Katori Physical Review Materials, 4, 044401 (2020).
~2019
Frustrated magnetism in the J1-J2 honeycomb lattice compounds MgMnO3 and ZnMnO3s synthesized via a metathesis reaction
Y. Haraguchi, K. Nawa, C. Michioka, H. Ueda, A. Matsuo, K. Kindo, M. Avdeev, T. J. Sato, and K. Yoshimura Physical Review Materials3, 124406 (2019).
Magnetic Study on Y2M3Co9P7 (M: Transition Metals) with Cation-Ordered Zr2Fe12P7-Type Structure
Y. Kato, H. Ohta and H. Aruga Katori Solid State Phenomena289, 164 (2019).
Itinerant electronic ferromagnetism in Sr2ScO3CoAs with largely-spaced CoAs conduction layers
Hiroto Ohta, Daisuke Noguchi, Koichiro Nabetani, and Hiroko Aruga Katori Physical Review B88, 094441 (2013).
Conference Presentations
2021
"From rocksalt to ilmenite: a metathesis route for the synthesis of novel quantum materials"(oral 3418549) Yuya Haraguchi, Hiroko Katori, Chishiro Michioka, Hiroaki Ueda, Kazuyoshi Yoshimura
The 2021 International Chemical Congress of Pacific Basin Societies (Pacifichem 2021) online
"Magnetic Study on Y2M3Co9P7 (M: Transition Metals) with Cations Ordered Zr2Fe12P7-type Structure"(poster Mo-PO45)
Yusuke Kato, Hiroto Ohta, Hiroko Aruga Katori
The 21st International Conference on Solid Compounds of Transition Elements (SCTE 2018), March 2018@Vienna University of Technology
"Magnetic Properties of Kyanites M2GeO5 (M = Cr and V)"(poster Tu-PO26) Hiroko Aruga Katori, Saki Takada, Hiroto Ohta, Misato Takahashi, Hazuki Kawano-Furukawa
The 21st International Conference on Solid Compounds of Transition Elements (SCTE 2018), March 2018@Vienna University of Technology
"Study on Effects of Site-selective Substitution in Itinerant Ferromagnets Y2Co12P7"(poster) Yusuke Kato, Hiroto Ohta, Hiroko Aruga Katori
2nd International Symposium on Negative Thermal Expansion and Related Materials (ISNTE-II), December 2017@Tokyo Institute of Technology
"Crystal Structure and Magnetic Property of Polymorphs (AlxFe2-x)GeO5"(oral) Hiroko Aruga Katori
2nd International Symposium on Negative Thermal Expansion and Related Materials (ISNTE-II), December 2017@Tokyo Institute of Technology
"Phase Diagram and Magnetism of (AlxFe2-x)GeO5 - Polymorph"(poster) Saki Takada, Hiroto Ohta, Hiroko Aruga Katori
The 6th Toyota RIKEN International Workshop "New Trends in Solid State Chemistry: from Oxides to Mixed Anion Compounds", November 2017@Toyota Commemorative Museum of Industry and Technology
"Magnetism and Electronic States of X2Co12P7 (X = Ti, Zr and Hf)"(poster) Yusuke Kato, Hiroto Ohta, Hiroko Aruga Katori
International Conference on Powder and Powder Metallurgy ~60th Annibersary~, November 2017@Kyoto University
"Study of magnetism and electronic structures of compounds with CoAs layers"(poster) Hiroto Ohta, Atsushi Suzuki, Daisuke Noguchi, Atsushi Oda, Takuya Iinuma, Hiroko Aruga Katori
International Conference on Powder and Powder Metallurgy ~60th Annibersary~, November 2017@Kyoto University
"遍歴強磁性体 A2Co12P7 (A = Ca, Y, Zr) の選択的元素置換効果"(ポスター 21aPS-1) 加藤優典、太田寛人、香取浩子
日本物理学会 2017年秋季大会 2017年9月@岩手大
"Anomalous behavior of localized magnetic moments in itinerant ferromagnets Ln2Co12P7 (Ln: Lanthanoid)"(poster P-TD-70) Hiroto Ohta, Yusuke Watanabe, Hiroko Aruga Katori, Atsushi Miyake, Masashi Tokunaga
the 3rd International Conference on Powder Metallurgy in Asia (APMA2015), November 2015@Kyoto University
"Study of itinerant electronic ferromagnetism in layered compounds Ae2ScO3CoPn (Ae = Sr, Ba, Pn = P, As)"(poster PS-23) Hiroto Ohta, Shohei Ido, Shuku Hashizume, and Hiroko Aruga Katori
International Workshop on Itinerant-Electron Magnetism, September 2015@Kyoto University
"Synthesis and study of electronic state of Sr2CrO2Co2As2 with CoAs conduction layers"(poster PS-28) Atsushi Suzuki, Hiroto Ohta, and Hiroko Aruga Katori
International Workshop on Itinerant-Electron Magnetism, September 2015@@Kyoto University
"Anomalous antiferromagnetic state in Nd2Co12P7"(poster PS-33) Yusuke Watanabe, Hiroto Ohta, Hiroko Aruga Katori, Atsushi Miyake, Masashi Tokunaga
International Workshop on Itinerant-Electron Magnetism, September 2015@@Kyoto University
"Electron doping effect on AeCo2As2 (Ae = Ca, Sr and Ba)"(poster TU.C-P10) Hiroto Ohta, Eisuke Akabane, Hiroko Aruga Katori
20th International Conference on Magnetism (ICM), July 2015@Barcelona
"Anomalousoxidation state of iron in two-leg ladder compound Ba6Fe8S15"(poster TU.E-P16) Hiroko Aruga Katori, Takahiro Adachi, Hiroto Ohta, Shinichi Nakamura, Akio Fuwa
20th International Conference on Magnetism (ICM), July 2015@Barcelona