Activities

Original Papers (査読付き原著論文)

25. "Introduction of Ag ions into 2H-MoTe₂ via high-pressure diffusion control method"
    Suguru Iwasaki*, Melbert Jeem, Akitoshi Nakano, and Masaya Fujioka*.
    Dalton Trans. 2026, 55, 4772.
    DOI: 10.1039/D5DT02554K
    



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24. "Compositional tuning in Na_xAlB₁₄ via diffusion control"
    Mihiro Hoshino, Suguru Iwasaki, Shigeto Hirai, Yoshihiko Ihara, Toru Sugahara, Haruhiko Morito, and Masaya Fujioka*.
    J. Alloys Compd. 2025, 1039, 183072.
    DOI: 10.1016/j.jallcom.2025.183072
    
23. "Fitting of nonnegative physical models based on statistical divergence: Application to thermally stimulated depolarization currents"
    Yasunobu Ando*, Shusuke Kasamatsu, Suguru Iwasaki, and Yumi Tanaka.
    Sci. Technol. Adv. Mater.: Method 2025, 5, 2441102.
    DOI: 10.1080/27660400.2024.2441102
    

22. [Book] "Chapter 48. Electrets and their theoretical modeling"
    Suguru Iwasaki, Yasunobu Ando*, Shusuke Kasamatsu, and Yumi Tanaka*.
    Interface Ionics, Springer Nature, 2024.
    DOI: 10.1007/978-981-97-6039-8
    
21. "Hydrogen-assisted Mg intercalation into 2H-TaS₂"
    Masaya Fujioka*, Khurelbaatar Zagarzusem, Suguru Iwasaki, Aman Sharma, Konosuke Watanabe, Rei Nakayama, Misuki Momai, Yuki Yamaguchi, Hiroyuki Shimada, Katsuhiro Nomura, Yasunobu Mizutanni, Hirohumi Sumi, Toshinori Ozaki, Masanori Nagao, Kazuki Nagashima.
    J. Am. Chem. Soc. 2024, 146, 34324.
    DOI: 10.1021/jacs.4c07294
    
20. "Crystallographic phase of Y_0.77Gd_0.23Ba₂Cu₃O_7-δ thin films after heat treatment under hydrogen atmosphere and hydride doping" (In Japanese)
    Hideo Namita*, Hiroyuki Sato, Masanori Matoba, Suguru Iwasaki, Masaya Fujioka, Yoshiko Hara, Takumu Harada, Masashi Miura, Yoichi Kamihara.
    Mater. Sci. Tech. Jpn. 2024, 61, 113. (in Japanese)
    

19. "Development and Research of Inorganic Energy Conversion Materials and Devices —The Effect of Carbonate Ions on the Ionic Conduction of B-type Carbonated Apatite—"
    Yumi Tanaka*, Shigeyuki Yatsugi, Suguru Iwasaki.
    Electrochemistry 2023, 91, 121001.
    DOI: 10.5796/electrochemistry.23-00110
    
18. "Effect of intergranular connectivity of NaAlB₁₄ on Na⁺ extraction"
    Suguru Iwasaki*, Mihiro Hoshino, Haruhiko Morito, Masaya Kumagai, Yukari Katsura, Junji Nishii, Masaya Fujioka*.
    Solid State Sci. 2023, 144, 107308.
    DOI: 10.1016/j.solidstatesciences.2023.107308
    
17. "93 at.% of Na extraction from a Na₂₄Si₁₃₆ single crystal via anisotropic ion diffusion control method"
    Suguru Iwasaki*, Haruhiko Morito, Mihiro Hoshino, Junji Nishii, Masaya Fujioka*.
    J. Solid State Chem. 2023, 324, 124082.
    DOI: 10.1016/j.jssc.2023.124082
    
16. "High-pressure diffusion control: Na extraction from NaAlB₁₄"
    Masaya Fujioka*, Mihiro Hoshino, Suguru Iwasaki, Haruhiko Morito, Masaya Kumagai, Yukari Katsura, Khurelbaatar Zagarzusem, Madoka Ono, Junji Nishii.
    Chem. Mater. 2023, 35, 3008.
    DOI: 10.1021/acs.chemmater.3c00318
    



Supplementary Cover
北海道大学プレスリリース (2023/03/23)
北大電子研プレスリリース (2023/03/24)

15. "Intercalation on transition metal trichalcogenides via a quasi-amorphous phase with 1D order"
    Masaya Fujioka*, Melbert Jeem, Kento Sato, Masashi Tanaka, Kazuki Morita, Taizo Shibuya, Kiyonori Takahashi, Suguru Iwasaki, Akira Miura, Masanori Nagao, Satoshi Demura, Hideaki Sakata, Madoka Ono, Hideo Kaiju, Junji Nishii.
    Adv. Funct. Mater. 2023, 33, 2208702.
    DOI: 10.1002/adfm.202208702
    



Back Cover
北海道大学プレスリリース (2023/01/11)
北大電子研プレスリリース (2023/01/13)

14. "Electric Transport Properties of NaAlB₁₄ with Covalent Frameworks"
    Suguru Iwasaki*, Mihiro Hoshino, Haruhiko Morito, Masaya Kumagai, Yukari Katsura, Melbert Jeem, Madoka Ono, Junji Nishii, Masaya Fujioka*.
    Inorg. Chem. 2022, 61, 4378.
    DOI: 10.1021/acs.inorgchem.1c03722
    



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13. "A Novel Technique for Controlling Anisotropic Ion Diffusion: Bulk Single-Crystalline Metallic Silicon Clathrate"
    Suguru Iwasaki, Haruhiko Morito, Takashi Komine, Kazuki Morita, Taizo Shibuya, Junji Nishii, Masaya Fujioka*.
    Adv. Mater. 2022, 34, 2106754.
    DOI: 10.1002/adma.202106754
    



Inside Back Cover
北海道大学プレスリリース (2023/01/05)
東北大学プレスリリース (2023/01/05)
茨城大学プレスリリース (2023/01/05)
北大電子研プレスリリース (2023/01/07)
日本経済新聞 (2023/01/05)
日刊工業新聞 (2023/01/07), 会員限定記事
マイナビニュース (2023/01/06)
他５件
12. "Al substitution effect on magnetic properties of magnetocaloric material HoB₂"
    Suguru Iwasaki*, Takafumi D. Yamamoto*, Pedro Baptista de Castro, Kensei Terashima, Hiroyuki Takeya, Yoshihiko Takano.
    Solid State Commun. 2022, 342, 114616.
    DOI: 10.1016/j.ssc.2021.114616
    

11. "SuperMat: construction of a linked annotated dataset from superconductors-related publications"
    Luca Foppiano*, Sae Dieb, Akira Suzuki, Pedro Baptista de Castro, Suguru Iwasaki, Azusa Uzuki, Miren Esparza Echevarria, Yan Meng, Kensei Terashima, Laurent Romary, Yoshihiko Takano, Masashi Ishii.
    Sci. Technol. Adv. Mater.: Method 2021, 1, 34.
    DOI: 10.1080/27660400.2021.1918396
    
10. "Thermoelectric transport properties of the van der Waals-type layered rhombohedral SnAs-based compound, EuSn₂As₂"
    Ryosuke Sakagami*, Yosuke Goto, Harunari Karimata, Nobuhiko Azuma, Michitaro Yamaguchi, Suguru Iwasaki, Manami Nakanishi, Itsuki Kitawaki, Yoshikazu Mizuguchi, Masanori Matoba, Yoichi Kamihara.
    Jpn. J. Appl. Phys. 2021, 60, 035511.
    DOI: 10.35848/1347-4065/abe449
    
9. "Enhancement of giant refrigerant capacity in Ho_1-xGd_xB₂ alloys (0.1 ≤ x ≤ 0.4)"
   Pedro Baptista de Castro*, Kensei Terashima*, Takafumi D. Yamamoto, Suguru Iwasaki, Ryo Matsumoto, Shintaro Adachi, Yoshito Saito, Mohammed ElMassalami, Hiroyuki Takeya, Yoshihiko Takano.
   J. Alloy. Compd. 2021, 865, 158881.
   DOI: 10.1016/j.jallcom.2021.158881
   
8. "Effect of Dy substitution in the giant magnetocaloric properties of HoB₂"
   Pedro Baptista de Castro*, Kensei Terashima, Takafumi D. Yamamoto, Suguru Iwasaki, Ryo Matsumoto, Shintaro Adachi, Yoshito Saito, Hiroyuki Takeya, Yoshihiko Takano.
   Sci. Technol. Adv. Mater. 2021, 21, 849.
   DOI: 10.1080/14686996.2020.1856629
   

7. "Oxygen Deficiency Dependence of Pressure Effects on Superconducting Critical Temperatures of Perovskite-related Mixed-anion Layered Compound Sr₂VFeAsO_3-δ"
   Suguru Iwasaki, Ryo Matsumoto, Shintaro Adachi, Yoshihiko Takano, Yoichi Kamihara*.
   J. Phys. Soc. Jpn. 2020, 89, 114712.
   DOI: 10.7566/JPSJ.89.114712
   
6. "Adiabatic temperature change in ErAl₂/metal PIT wires: A practical method for estimating the magnetocaloric response of magnetocaloric composites"
   Takafumi D. Yamamoto*, Hiroyuki Takeya, Kensei Terashima, Suguru Iwasaki, Pedro Baptista de Castro, Takenori Numazawa, Yoshihiko Takano.
   J. Magn. Magn. Mater. 2020, 513, 167207.
   DOI: 10.1016/j.jmmm.2020.167207
   
5. "Demonstration of electric double layer gating under high pressure by the development of field-effect diamond anvil cell"
   Shintaro Adachi*, Ryo Matsumoto, Sayaka Yamamoto, Takafumi D. Yamamoto, Kensei Terashima, Yoshito Saito, Miren Esparza Echevarria, Pedro Baptista de Castro, Peng Song, Suguru Iwasaki, Hiroyuki Takeya, Yoshihiko Takano.
   Appl. Phys. Lett. 2020, 116, 223506.
   DOI: 10.1063/5.0004973
   
4. "Machine-learning-guided discovery of the gigantic magnetocaloric effect in HoB₂ near the hydrogen liquefaction temperature"
   Pedro Baptista de Castro*, Kensei Terashima*, Takafumi D. Yamamoto, Zhufeng Hou, Suguru Iwasaki, Ryo Matsumoto, Shintaro Adachi, Yoshito Saito, Peng Song, Hiroyuki Takeya, Yoshihiko Takano*.
   NPG Asia Mater. 2020, 12, 35.
   DOI: 10.1038/s41427-020-0214-y
   
3. "Magnetic entropy change of ErAl₂ magnetocaloric wires fabricated by a powder-in-tube method"
   Takafumi D. Yamamoto*, Hiroyuki Takeya, Suguru Iwasaki, Kensei Terashima, Pedro Baptista de Castro, Takenori Numazawa, Yoshihiko Takano.
   J. Phys. D 2020, 53, 095004.
   DOI: 10.1088/1361-6463/ab5c71
   

2. "Superconducting critical current density enhanced to 285 A cm^-2 for Sr₂VFeAsO_3-δ tapes fabricated by ex-situ powder-in-tube process"
   Suguru Iwasaki, Ryo Matsumoto, Shintaro Adachi, Yoshihiko takano, Yoichi Kamihara*.
   Appl. Phys. Express 2019, 12, 123004.
   DOI: 10.7567/1882-0786/ab55b2
   

1. "Superconducting critical current densities for Sr₂VFeAsO_3-δ wires fabricated by ex-situ powder-in-tube process"
   Suguru Iwasaki, Masanori Matoba, Yoichi Kamihara*.
   Mater. Sci. Tech. Jpn. 2018, 55, 77.