JOPSS - Search Results

As a promising environment-friendly alternative to current vapor-compression refrigeration, solid-state refrigeration based on the barocaloric effect has been attracting world wide attention. Generally, both phases in which a barocaloric effect occurs are present at ambient pressure. Here, instead, we demonstrate that KPF $_{6}$ exhibits a colossal barocaloric effect due to the creation of a high-pressure rhombohedral phase. The phase diagram is constructed based on pressure-dependent calorimetric, Raman scattering, and neutron diffraction measurements. The present study is expected to provide an alternative routine to colossal barocaloric effects through the creation of a high-pressure phase.

Journal Articles

Metalloid substitution elevates simultaneously the strength and ductility of face-centered-cubic high-entropy alloys

Wei, D.*; Wang, L.*; Zhang, Y.*; Gong, W.; Tsuru, Tomohito; Lobzenko, I.; Jiang, J.*; Harjo, S.; Kawasaki, Takuro; Bae, J. W.*; et al.

Acta Materialia, 225, p.117571_1 - 117571_16, 2022/02

https://doi.org/10.1016/j.actamat.2021.117571

Times Cited Count：85 Percentile：99.69(Materials Science, Multidisciplinary)

Journal Articles

Formation of clusters in dilute neutron-rich matter

Tanaka, Junki*; Yang, Z.*; Typel, S.*; Adachi, Satoshi*; Bai, S.*; van Beek, P.*; Beaumel, D.*; Fujikawa, Yuki*; Han, J.*; Heil, S.*; et al.

Science, 371(6526), p.260 - 264, 2021/01

https://doi.org/10.1126/science.abe4688

Times Cited Count：66 Percentile：99.32(Multidisciplinary Sciences)

By employing quasi-free -cluster-knockout reactions, we obtained direct experimental evidence for the formation of clusters at the surface of neutron-rich tin isotopes. The observed monotonous decrease of the reaction cross sections with increasing mass number, in excellent agreement with the theoretical prediction, implies a tight interplay between -cluster formation and the neutron skin.

Journal Articles

General synthesis of single-atom catalysts for hydrogen evolution reactions and room-temperature Na-S batteries

Lai, W.-H.*; Wang, H.*; Zheng, L.*; Jiang, Q.*; Yan, Z.-C.*; Wang, L.*; Yoshikawa, Hirofumi*; Matsumura, Daiju; Sun, Q.*; Wang, Y.-X.*; et al.

Angewandte Chemie; International Edition, 59(49), p.22171 - 22178, 2020/12

https://doi.org/10.1002/anie.202009400

Times Cited Count：92 Percentile：95.69(Chemistry, Multidisciplinary)

Journal Articles

Fine structure in the decay of $^{223}$ U

Sun, M. D.*; Liu, Z.*; Huang, T. H.*; Zhang, W. Q.*; Andreyev, A. N.; Ding, B.*; Wang, J. G.*; Liu, X. Y.*; Lu, H. Y.*; Hou, D. S.*; et al.

Physics Letters B, 800, p.135096_1 - 135096_5, 2020/01

https://doi.org/10.1016/j.physletb.2019.135096

Times Cited Count：12 Percentile：79.08(Astronomy & Astrophysics)

Journal Articles

The Spectrum and laser properties of ytterbium doped phosphate glass at low temperature

Dai, S.*; Sugiyama, Akira; Hu, L.*; Liu, Z.*; Huang, G.*; Jiang, Z.*

Journal of Non-Crystalline Solids, 311(2), p.138 - 144, 2002/11

https://doi.org/10.1016/S0022-3093(02)01365-0

Low-temperature absorption and fluorescence spectra of the Yb3+ ions were measured in phosphate glass with compositions of (60-65)P $_{2}$ O $_{5}$ -(4-8)B $_{2}$ O $_{3}$ -(5-10)Al $_{2}$ O $_{3}$ -(10-15)K $_{2}$ O-(5-10)BaO-(0-2)La $_{2}$ O $_{3}$ -(0-2)Nb $_{2}$ O $_{5}$ -(4-87)Yb $_{2}$ O $_{3}$ in mol-%. Temperature dependence of lifetime from $^{2}$ F $_{5/2}$ upper level of YB $^{3+}$ was investigated with a cryostat. The glass laser performance pumped by 940 nm laser diode was measured at different temperature range. At 8 K, glass laser oscillation had a slope efficiency of 4% and a maximum power of 2 mW at the peak laser wavelength of 1001 nm.

Journal Articles

Study of a new ytterbium doped phosphate laser glass

Dai, S.*; Hu, L.*; Sugiyama, Akira; Izawa, Yasukazu*; Liu, Z.*; Jiang, Z.*

Chinese Science Bulletin, 47(3), p.255 - 259, 2002/02

https://doi.org/10.1360/02tb9062

Times Cited Count：8 Percentile：53.02(Multidisciplinary Sciences)

A new type of ytterbium doped phosphate laser glass has been produced and studied about physical and optical properties such as thermo-mechanical properties, nonlinear properties, crystalline phase, micro defects and spectroscopic properties. In the glass forming process, newly developed OH removing technology was adopted. From the reduction of OH concentration in the glass, upper state fluorescence lifetime reached 2.2 ms. Additionally, the glass shows remarkable athermal property of 0.4210E $^{-6}$ /K, which is around one-tenth of QX/Yb glass.

Oral presentation

Development of a methane-volume reduction method for $^{81}$ Kr analysis and its application to deep groundwater

Nakata, Kotaro*; Hasegawa, Takuma*; Ota, Tomoko*; Jiang, W.*; Lu, Z. T.*; Miyakawa, Kazuya

no journal, ,

no abstracts in English

Presentation/Publication Type

Journal/Book Title

Meeting title

First Author

Keyword

Language

Publication Year

Held year of conference

Chiral Dirac fermion in a collinear antiferromagnet

First observation of $^{28}$ O

A Colossal barocaloric effect induced by the creation of a high-pressure phase

Metalloid substitution elevates simultaneously the strength and ductility of face-centered-cubic high-entropy alloys

Formation of clusters in dilute neutron-rich matter

General synthesis of single-atom catalysts for hydrogen evolution reactions and room-temperature Na-S batteries

Fine structure in the decay of $^{223}$ U

The Spectrum and laser properties of ytterbium doped phosphate glass at low temperature

Study of a new ytterbium doped phosphate laser glass

Development of a methane-volume reduction method for $^{81}$ Kr analysis and its application to deep groundwater