最近の主な業績

○ K. Takenaka, M. Sato, M. Mitamura, Y. Yokoyama, N. Katayama, and Y. Okamoto
"Spray-dry Synthesis of β-Cu_1.8Zn_0.2V₂O₇ Ceramic Fine Particles Showing Giant Negative Thermal Expansion"
Journal of the American Ceramic Society 103(4) (2020) 2757-2753 (7 pages)

○ K. Takenaka, D. Asai, R. Kaizu, Y. Mizuno, Y. Yokoyama, Y. Okamoto, N. Katayama, H. Suzuki, and Y. Imanaka
"Giant Isotropic Negative Thermal Expansion in Y-doped Samarium Monosulfides by Intra-Atomic Charge Transfer"
Scientific Reports 9 (2019) 122 (8 pages)

○ K. Takenaka
"Progress of Research in Negative Thermal Expansion Materials:
Paradigm Shift in the Control of Thermal Expansion"
Frontiers in Chemistry 6 (2018) 267 (13 pages) [invited]

○ K. Takenaka, Y. Okamoto, T. Shinoda, N. Katayama, and Y. Sakai
"Colossal Negative Thermal Expansion in Reduced Layered Ruthenate"
Nature Communications 8 (2017) 14102 (7 pages)

○ D. Matsunami, A. Fujita, K. Takenaka, and M. Kano
"Giant Barocaloric Effect Enhanced by the Frustration of the Antiferromagnetic Phase in Mn₃GaN"
Nature Materials 14(1) (2015) 73-78.

○ K. Takenaka, M. Ichigo, T. Hamada, A. Ozawa, T. Shibayama, T. Inagaki, and K. Asano
"Magnetovolume Effects in Manganese Nitrides with Antiperovskite Structure"
Science and Technology of Advanced Materials 15(1) (2014) 015009 (11 pages)

○ N. Higashihara, Y. Okamoto, Y. Yoshikawa, Y. Yamakawa, H. Takatsu, H. Kageyama, and K. Takenaka
"Superconductivity in Nb₂Pd₃Te₅ and Chemically-Doped Ta₂Pd₃Te₅"
Journal of the Physical Society of Japan 90(6) (2021) 063705 (4 pages)

○ T. Kanematsu, Y. Okamoto, and K. Takenaka
"Large Magnetic-Field-Induced Strain at the Magnetic Order Transition in Triangular Antiferromagnet AgCrS₂"
Applied Physics Letters 118(14) (2021) 142404 (5 pages)

○ Y. Okamoto, K. Saigusa, T. Wada, Y. Yamakawa, A. Yamakage, T. Sasagawa, N. Katayama, H. Takatsu, H. Kageyama, and K. Takenaka
"High-Mobility Carriers Induced by Chemical Doping in the Candidate Nodal-Line Semimetal CaAgP"
Physical Review B 102(11) (2020) 115101 (6 pages)

○ Y. Okamoto, H. Amano, N. Katayama, H. Sawa, K. Niki, R. Mitoka, H. Harima, T. Hasegawa, N. Ogita, Y. Tanaka, M. Takigawa, Y. Yokoyama, K. Takehana, Y. Imanaka, Y. Nakamura, H. Kishida, and K. Takenaka
"Regular-Triangle Trimer and Charge Order Preserving the Anderson Condition in the Pyrochlore Structure of CsW₂O₆"
Nature Communications 11 (2020) 3144 (8 pages)

○ Y. Yokoyama, S. Yano, R. Kurita, M. Karasawa, H. Tanaka, H. Takahashi, T. Kikukawa, M. Sonoyama, and K. Takenaka
"Effects of Salt and Gel Network Structures on Purple Membrane Stacking in Hydrogels Immobilized with Poly(Vinyl Alcohol)"
Journal of Applied Physics 129(01) (2021) 014701 (6 pages)

○ Y. Yokoyama, H. Hasegawa, Y. Mizuno, D. Asai, Y. Okamoto, H. S. Suzuki, K. Takehana, Y. Imanaka, and K. Takenaka
"Effects of Y substitution on the electronic structure and charge dynamics of SmS"
Physical Review B 100(24) (2019) 245143 (7 pages)