発表論文/Publications

1. S. Kobayashi, S. Kawaguchi, H. Yamada "In situ high temperature powder x-ray diffraction technique using a sapphire single-crystal flat cell" Review of Scientific Instruments 94, 083103 (2023).

2. S. Kobayashi, D. Ogawa, X. D. Xu, Y. K. Takahashi, A. Martin-Cid, K. Ishigami, Y. Kotani, M. Suzuki, T. Yoshioka, H. Tsuchiura, H. Sepehri-Amin, T. Ohkubo, K. Hono, S. Hirosawa, T. Nakamura "Multimodal analysis of Zr substitution effects on magnetic and crystallographic properties in (Sm1-xZrx)(Fe0.8Co0.2)12 compounds with ThMn12 structure" Acta Materialia 242, 118454 (2023).

3. S. Kobayashi, T. Abe, A. Martín-Cid, S. Kawaguchi, M. Suzuki, S. Hirosawa, and T. Nakamura "Diagram of constituent crystalline phases in a Nd–Fe–B–Cu sintered magnet by in-situ high-temperature synchrotron X-ray diffraction and its thermodynamic interpretation" Journal of Alloys and Compounds, 892, 162188 (2022).

4. 小林 慎太郎, 片山 尚幸, 澤 博 "異常高価数のCrをもつCrSe2の特異な逐次構造相転移" 日本結晶学会誌 62, 221 (2020). 研究紹介はこちら

5. S. Kobayashi, A. Martín-Cid, K. Toyoki, H. Okazaki, S. Kawaguchi, S. Hirosawa, and T. Nakamura  "Effects of texture on lattice constants of Nd2Fe14B and their relationship with internal stress in Nd-Fe-B permanent magnets" Physical Review Materials, 4, 094405 (2020). 研究紹介はこちら

6. S. Kobayashi, A. Martín-Cid, K. Toyoki, H. Okazaki, S. Hirosawa, T. Nakamura "Influence of magnetostriction on the lattice constants of the secondary phases in Nd-Fe-B sintered magnets studied by synchrotron X-ray diffraction" AIP advances 9, 125154 (2019). 研究紹介はこちら

7. S. Kobayashi, N. Katayama, T. Manjo, H. Ueda, C. Michioka, J. Sugiyama, Y. Sassa, O. K. Forslund, M. Månsson, K. Yoshimura, H. Sawa “Linear Trimer Formation with Antiferromagnetic Ordering in 1T-CrSe2 Originating from Peierls-like Instabilities and Interlayer Se–Se Interactions” Inorganic Chemistry 58, 14304 (2019).    Chosen to be “cover” of journal. 研究紹介はこちら

8. S. Kobayashi, H. Ueda, C. Michioka, K. Yoshimura, S. Nakamura, T. Katsufuji, H. Sawa "Anomalous double-stripe charge ordering in β−NaFe2O3 with double triangular layers consisting of almost perfect regular Fe4 tetrahedra" Physical Review Materials 2, 054402 (2018). 研究紹介はこちら

9. S. Kobayashi, H. Ueda, C. Michioka, K. Yoshimura "Competition between the Direct Exchange Interaction and Superexchange Interaction in Layered Compounds LiCrSe2, LiCrTe2, and NaCrTe2 with a Triangular Lattice" Inorganic Chemistry 55, 7407 (2016). 研究紹介はこちら

10. S. Kobayashi, H. Ueda, C. Michioka, K. Yoshimura "Control of the valence instability of tetravalent chromium in 1T-CrSe2 by anion substitution and pressure" Journal of the Physical Society of Japan 84, 064708 (2015).

11. S. Kobayashi, H. Ueda, D. Nishio-Hamane, C. Michioka, K. Yoshimura "Successive phase transitions driven by orbital ordering and electron transfer in quasi-two-dimensional CrSe2 with a triangular lattice" Physical Review B 89, 054413 (2014).

12. S. Kobayashi, H. Ueda, C. Michioka, K. Yoshimura "Synthesis of CrSe2 with a Deintecalation Method from KxCrSe2" Proceedings of the 2012 Powder Metallurgy World Congress & Exhibition, P-T14-122, 1-5 (2012).

13. 小林慎太郎 "層状化合物CrSe2における逐次相転移" 物性研究, vol.1, 012603 (2012).

14. Xin Tang, Jiangnan Li, Hossein Sepehri-Amin, Anton Bolyachkin, Andres Martin-Cid, Shintaro Kobayashi, Yoshinori Kotani, Motohiro Suzuki, Asako Terasawa, Yoshihiro Gohda, Tadakatsu Ohkubo, Tetsuya Nakamura, Kazuhiro Hono "Unveiling the origin of the large coercivity in (Nd, Dy)-Fe-B sintered magnets" NPG Asia Materials 15, 50 (2023).

15. Ikuya Yamada, Manami Goto, Yuta Kato, Yuta Kizawa, Hajime Yamamoto, Shintaro Kobayashi, Shogo Kawaguchi, Yuki Mori, Kenta Kimura "Switching of Intermetallic Charge Transfer and Negative Thermal Expansion in Mn-Doped CaCu3Fe4O12" J. Phys. Chem. C 127, 19213 (2023).

16. Elisabetta Nocerino, Shintaro Kobayashi, Catherine Witteveen, Ola K Forslund, Nami Matsubara, Chiu Tang, Takeshi Matsukawa, Akinori Hoshikawa, Akihiro Koda, Kazuyoshi Yoshimura, Izumi Umegaki, Yasmine Sassa, Fabian O von Rohr, Vladimir Pomjakushin, Jess H Brewer, Jun Sugiyama, Martin Månsson "Competition between magnetic interactions and structural instabilities leading to itinerant frustration in the triangular lattice antiferromagnet LiCrSe2" Communications Materials 4, 81 (2023).

17. Y. Yasui, M. Tansho, K. Fujii, Y. Sakuda, A. Goto, S. Ohki, Y. Mogami, T. Iijima, S. Kobayashi, S. Kawaguchi, K. Osaka, K. Ikeda, T. Otomo, M. Yashima "Hidden chemical order in disordered Ba7Nb4MoO20 revealed by resonant X-ray diffraction and solid-state NMR" Nature Communications 14, 2337 (2023). 

18. F. Honda, S. Kobayashi, N. Kawamura, S. I. Kawaguchi, T. Koizumi, Y. J. Sato, Y. Homma, N. Ishimatsu, J. Gouchi, Y. Uwatoko, H. Harima, J. Flouquet, and D. Aoki, "Pressure-induced Structural Phase Transition and New Superconducting Phase in UTe2" J. Phys. Soc. Jpn. 92, 044702 (2023).

19. Y. Zheng, H. Kasai,  S. Kobayashi,  S. Kawaguchi and E. Nishibori, "In situ observation of a mechanically induced self-sustaining reaction for synthesis of silver" Mater. Adv. 4, 1005 (2023).

20. E. Nocerino, C. Witteveen, S. Kobayashi, O. K. Forslund, N. Matsubara, A. Zubayer, F. Mazza, S. Kawaguchi, A. Hoshikawa, I. Umegaki, J. Sugiyama, K. Yoshimura, Y. Sassa, F. O. von Rohr, and M. Månsson "Nuclear and magnetic spin structure of the antiferromagnetic triangular lattice compound LiCrTe2 investigated by μSR, neutron and X‑ray diffraction" Sci. Rep. 12, 21657 (2022).

21. M. Takeuchi, M. Suzuki, S. Kobayashi, Y. Kotani, T. Nakamura, N. Kikuchi, A. Bolyachkin, H. Sepehri-Amin, T. Ohkubo, K. Hono, Y. Une and S. Okamoto "Real picture of magnetic domain dynamics along the magnetic hysteresis curve inside an advanced permanent magnet" NPG Asia Mater. 14, 70 (2022). 日本語の解説記事。プレスリリース。

22. Y. Cao, M. A. Kirsanova, M. Ochi, W. A. Maksoud, T. Zhu, R. Rai,S. Gao,T. Tsumori, S. Kobayashi, S. Kawaguchi, E. Abou-Hamad, K. Kuroki, C. Tassel, A. M. Abakumov, Y. Kobayashi, H. Kageyama "Topochemical Synthesis of Ca3CrN3H Involving a Rotational Structural Transformation for Catalytic Ammonia Synthesis" Angew. Chem. Int. Ed. e202209187 (2022).

23. H. Ubukata, F. Takeiri, C. Tassel, S. Kobayashi, S. Kawaguchi, T. Saito, T. Kamiyama, S. Kobayashi, G. Kobayashi, and H. Kageyama "Trihalide Mixing by Size-Flexible H– Ions in Layered Ba2H3 (Cl, Br, I)" Chem. Mater., 34, 5654–5662 (2022).

24. M. Nishi, A. Kaneko, H. Ohgidani, H. Dekura, S. Kakizawa, S. Kawaguchi, S. Kobayashi, T. Sakaiya, T. Kondo  "Bridgmanite Freezing in Shocked Meteorites Due To Amorphization-Induced Stress" Geophys. Res. Lett. 49 (2022).

25. X. Tang, H. Sepehri-Amin, N. Terada, A. Martin-Cid, I. Kurniawan, S. Kobayashi, Y. Kotani, H. Takeya, J. Lai, Y. Matsushita, T. Ohkubo, Y. Miura, T. Nakamura, and K. Hono "Magnetic refrigeration material operating at a full temperature range required for hydrogen liquefaction" Nat. Commun. 13, 1817 (2022). 解説

26. 竹内 誠, 蓬田 貴裕, 菊池 伸明, 豊木 研太郎, 小林 慎太郎, 小谷 佳範, 中村 哲也, 日置 敬子, 岡本 聡 "軟X線磁気円二色性顕微分光によるNd-Fe-B熱間加工磁石の初磁化過程および減磁過程における磁区観察" 日本金属学会誌, 86, 1 (2022).

27. A. Martin-Cid, T. Kawahara, S. Kobayashi, K. Toyoki, D. Billington, Y. Kotani, H. Kubo, Y. Une, T. Iriyama, M. Sagawa, T. Nakamura "Effect of hydrogenation-disproportionation-desorption-recombination powder processing on the demagnetization process of Nd-Fe-B sintered magnets analyzed by soft X-ray magnetic circular dichroism microscopy" J. Magn. Magn. Mater. 538, 168308 (2021).

28. Y. Moritomo, Y. Yoshida, D. Inoue, H. Iwaizumi, S. Kobayashi, S. Kawaguchi, and T. Shibata "Origin of the Material Dependence of the Temperature Coefficient of the Redox Potential in Coordination Polymers" J. Phys. Soc. Jpn. 90, 063801 (2021).

29. N. Katayama, K. Kojima, T. Yamaguchi, S. Hattori, S. Tamura, K. Ohara, S. Kobayashi, K. Sugimoto, Y. Ohta, K. Saitoh, H. Sawa "Slow dynamics of disordered zigzag chain molecules in layered LiVS2 under electron irradiation", npj. Quantum Mater. 6, 16 (2021). 研究紹介, 解説

30. A.K.Srinithi, H.Sepehri-Amin, XinTang, P.Tozman, J.Li, J.Zhang, S.Kobayashi, T.Ohkubo, T.Nakamura, K.Hono "Phase relations and extrinsic magnetic properties of Sm–(Fe,Co)–Ti–(Ga)-based alloys for ThMn12-type permanent magnets", J. Magn. Magn. Mater. 529, 167866 (2021).

31. J. Y. Law, L. M. Moreno-Ramírez, Á. Díaz-García, A. Martín-Cid, S. Kobayashi, S. Kawaguchi, T. Nakamura, V. Franco "MnFeNiGeSi high-entropy alloy with large magnetocaloric effect ", J. Alloys Compd. 855, 157424 (2021).

32. J.O. Ticknor, I. Umegaki, R.M.L. McFadden, A. Chatzichristos, D. Fujimoto, V.L. Karner, R.F. Kiefl, S. Kobayashi, C.D. Philip Levy, R. Li, G.D. Morris, M.R. Pearson, K. Yoshimura, J. Sugiyama, and W.A. MacFarlane "Investigation of ionic and anomalous magnetic behavior in CrSe2 using 8Li β-NMR"  RSC Adv. 10, 8190–8197 (2020). 

33. R. Shirakami, H. Ueda, H. O. Jeschke, H. Nakano, S. Kobayashi, A. Matsuo, T. Sakai, N. Katayama, H. Sawa, K. Kindo, C. Michioka, K. Yoshimura “Two magnetization plateaus in the kagome fluoride Cs2LiTi3F12” Phys. Rev. B 100, 174401 (2019).

34. S. Kitou, A. Nakano, S. Kobayashi, K. Sugawara, N. Katayama, N. Maejima, A. Machida, K. Ichimura, S. Tanda,T. Nakamura, H. Sawa “Effect of Cu intercalation and pressure on excitonic interaction in 1T-TiSe2” Phys. Rev. B 99, 104109 (2019).

35. S. Kitou, S. Kobayashi, T. Kaneko, N. Katayama, S. Yunoki, T. Nakamura, H. Sawa “Honeycomb lattice type charge density wave associated with interlayer Cu ions ordering in 1T-CuxTiSe2” Phys. Rev. B 99, 081111(R) (2019).  研究紹介はこちら

36. N. Katayama, S. Tamura, T. Yamaguchi, K. Sugimoto, K. Iida, T. Matsukawa, A. Hoshikawa, T. Ishigaki, S. Kobayashi, Y. Ohta, H. Sawa “Large entropy change derived from orbitally assisted three-centered two-electron σ-bond formation in metallic Li0.33VS2” Phys. Rev. B 98, 081104(R) (2018). 研究紹介はこちら

37. M. Goto, H. Ueda, C. Michioka, A. Matsuo, K. Kindo, K. Sugawara, S. Kobayashi, N. Katayama, H. Sawa, K. Yoshimura "In-plane spin canting and 1/3-magnetization-plateaulike behavior in S = 3/2 Cr3+ kagome lattice antiferromagnets Cs2KCr3F12 and Cs2NaCr3F12" Phys. Rev. B 97, 224421 (2018).

38.  J. Sugiyama, H. Nozaki, I. Umegaki, S. Kobayashi, C. Michioka, H. Ueda, K. Yoshimura, Y. Sassa, O. K. Forslund, M. Månsson, J. H. Brewer "Deviation of Internal Magnetic Field in the CrSe2 Triangular Lattice with Li Intercalation" JPS Conf. Proc. 21, 011004 (2018).

39. M. Goto, H. Ueda, C. Michioka, A. Matsuo, K. Kindo, K. Sugawara, S. Kobayashi, N. Katayama, H. Sawa, K. Yoshimura "Ising-like anisotropy stabilized 1/3 and 2/3 magnetization plateaus in the V3+ kagome lattice antiferromagnets" Phys. Rev. B 95, 134436 (2017).

40.  J. Sugiyama, H. Nozaki, I. Umegaki, T. Uyama, K. Miwa, J. H. Brewer, S. Kobayashi, C. Michioka, H. Ueda, K. Yoshimura "Static magnetic order on the metallic triangular lattice in CrSe2 detected by μ+SR" Physical Review B 94, 014408 (2016).

41. S. Kondo, K. Kaneko, T. Morimura, H. Nakashima, S. Kobayashi, C. Michioka, K. Yoshimura "Magnetic analysis of a melt-spun Fe-dilute Cu60Ag35Fe5 alloy" Physica B: Condensed Matter 463 108 (2015).

42. S. Kondo, K.Ogawa, T. Morimura, H. Nakashima, S. Kobayashi, C. Michioka, K. Yoshimura "Magnetic analysis of a melt-spun Fe-dilute Cu60Au35Fe5 alloy" Journal of Alloys and Compounds 640, 193 (2015).

43. A. Bandyopadhyay, A. K. Deb, S. Kobayashi, K. Yoshimura, P. K. Chakrabarti "Room temperature ferromagnetism in Fe-doped europium oxide (Eu1.90Fe0.10O3−δ)" Journal of Alloys and Compounds 611, 324 (2014).

see Google Scholar