Raman Scattering Study of Hydrogen Storage Material LiNH2
Raman Scattering Study of Hydrogen Storage Material LiNH2
复制标题
储氢材料LiNH2的拉曼散射研究
DOI:
10.1143/jpsj.81.094603
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发表时间:
2012
影响因子:
1.7
通讯作者:
M. Udagawa
中科院分区:
文献类型:
--
作者:
Akitaka Michigoe;T. Hasegawa;N. Ogita;T. Ichikawa;Y. Kojima;S. Isobe;M. Udagawa
Raman scattering spectra of LiNH 2 have been measured from 3.4 to 673 K. Precise polarization dependence of the single crystalline LiNH 2 and first principles calculation have successfully assigned all observed peaks. Li vibration with the lowest energy at 133 cm -1 shows the anomaly, where its energy decreases with decreasing temperature. This anomaly shows that the Li vibration is highly anharmonic with large amplitude. In addition, the energy of 133 cm -1 gives the very small force constant of 0.05 mdyn/A between Li and NH 2 in the diatomic model. This weak interaction suggests that LiNH 2 easily decomposes to Li and NH 2 . Below 100 K, we have found new peaks in the energy range from 100 to 700 cm -1 . No additional degrees of freedom for vibrations conclude that rotational motion of NH 2 molecule freezes below 100 K. With increasing temperature, the bond angle of H–N–H and bond length N–H in NH 2 become narrow and long, respectively. At the reaction temperature region, the correlation between the int...
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DOI:
--
发表时间:
2006
期刊:
Phys.Rev.B 74
影响因子:
--
作者:
C.Liu;T.Nakajima;T.Sakka;and H.Oheaki;C.Liu and T.Nakajima;M. A. Avila;Y. Takasu;I. Ishii;K. Suekuni;R. A. Ribeiro;Y. Takasu;I.Ishii;Y.Takasu;M.A.Avila;Y.Takasu
通讯作者:
Y.Takasu
影响因子:
6.2
作者:
Hino, S;Ichikawa, T;Fujii, H
通讯作者:
Fujii, H
DOI:
--
发表时间:
2006
期刊:
Physica B : Condensed Matter (掲載決定済み)
影响因子:
--
作者:
K.Iwasa;M.Kohgi;H.Sugawara;H.Sato
通讯作者:
H.Sato
影响因子:
6.2
作者:
Ichikawa, T;Isobe, S;Fujii, H
通讯作者:
Fujii, H
DOI:
--
发表时间:
2008
期刊:
Physical Review B 78
影响因子:
--
作者:
S. Kuroiwa;T. Hasegawa;M. Udagawa;他3名
通讯作者:
他3名