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Lai, W.-H.*; Wang, H.*; Zheng, L.*; Jiang, Q.*; Yan, Z.-C.*; Wang, L.*; 吉川 浩史*; 松村 大樹; Sun, Q.*; Wang, Y.-X.*; et al.
Angewandte Chemie; International Edition, 59(49), p.22171 - 22178, 2020/12
被引用回数：77 パーセンタイル：95.81(Chemistry, Multidisciplinary)Herein, we report a comprehensive strategy to synthesize a full range of single-atom metals on carbon matrix, including V, Mn, Fe, Co, Ni, Cu, Ge, Mo, Ru, Rh, Pd, Ag, In, Sn, W, Ir, Pt, Pb, and Bi. The extensive applications of various single-atom catalysts (SACs) are manifested via their ability to electro-catalyze typical hydrogen evolution reactions (HER) and conversion reactions in novel room-temperature sodium sulfur batteries (RT-Na-S). The enhanced performances for these electrochemical reactions arisen from the ability of different single active atoms on local structures to tune their electronic configuration. Significantly, the electrocatalytic behaviors of diverse SACs, assisted by density functional theory calculations, are systematically revealed by in situ synchrotron X-ray diffraction and in situ transmission electronic microscopy, providing a strategic library for the general synthesis and extensive applications of SACs in energy conversion and storage.
Y
Ti
O
Chang, L.-J.; Su, Y.*; Kao, Y.-J.*; Chou, Y. Z.*; 加倉井 和久; Mittal, R.*; Schneider, H.*; Br
ckel, T.*; Balakrishnan, G.*; Lees, M. R.*
Physica B; Condensed Matter, 406(12), p.2393 - 2396, 2011/06
被引用回数：1 パーセンタイル：5.4(Physics, Condensed Matter)Diffuse polarized neutron scattering studies have been carried out on single crystals of pyrochlore spin ice HoYTiO (x = 0, 0.3, and 1) to investigate the effects of doping and anisotropy on spin correlations in the system. For all the samples studied the spin flip (SF) diffuse scattering (i.e. the in-plane component) reveals that the spin correlations can be described using a nearest-neighbour spin ice model (NNSM) at higher temperatures (
= 3.6 K) and a dipolar spin ice model (DSM) as the temperature is reduced ( = 30 mK). In this paper, we focus on the experimental results of the highly doped spin ice HoYTiO and compare our results with pure spin ice HoTiO.
TbTiOChang, L.-J.; Schweika, W.*; Kao, Y.-J.*; Chou, Y. Z.*; Per
on, J.*; Brckel, T.*; Yang, H. C.*; Chen, Y. Y.*; Gardner, J. S.*
Physical Review B, 83(14), p.144413_1 - 144413_7, 2011/04
被引用回数：8 パーセンタイル：36.17(Materials Science, Multidisciplinary)Polycrystalline samples of HoTbTiO (0 
2) have been prepared and characterized for their structural and magnetic properties. The parent compounds of this solid solution are the spin ice HoTiO and the spin liquid TbTiO. The results of specific heat, elastic and inelastic neutron scattering measurements suggest that the very strong single-ion effects of HoTiO and TbTiO persist in the HoTbTiO (0 2) solid solution, whereas the Tb-Ho correlations are weak, resulting in small shifts in the energy scales but with no dramatic effect on the bulk properties.
YTiOChang, L.-J.; Su, Y.*; Kao, Y.-J.*; Chou, Y. Z.*; Mittal, R.*; Schneider, H.*; Brueckel, T.*; Balakrishnan, G.*; Lees, M. R.*
no journal, ,
Diffuse polarized neutron scatterings have been carried out on the pyrochlore spin ice HoYTiO (x = 0, 0.3 and 1) single crystals to investigate the doping effects and anisotropy of spin correlations in the system. The crystals were aligned in the (1-10) orientation to coincide with the direction of neutron polarization. The spin flip diffuse scattering (i.e. the in-plane component) reveals an anomalous crossover in the spin correlations from the nearest-neighbor spin ice correlation to a typical dipolar spin ice correlation as the temperature is reduced for all the samples. A signature of strong antiferromagnetic correlation is observed in the non-spin flip channel (i.e. the out-of-plane component), at the same temperatures where the dipolar spin ice correlation appears in the spin flip channel.
