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
复制
发表时间:
2012
影响因子:
1.7
通讯作者:
M. Udagawa
M. Udagawa
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Akitaka Michigoe;T. Hasegawa;N. Ogita;T. Ichikawa;Y. Kojima;S. Isobe;M. Udagawa

文献摘要

参考文献

被引文献

相似文献

在3.4 ~ 673 K范围内测量了linh2的拉曼散射光谱。单晶LiNH 2的精确偏振依赖性和第一性原理计算成功地分配了所有观察到的峰。在133 cm -1处能量最低的Li振动出现异常,其能量随温度的降低而降低。这一异常表明Li振动是高度非调和的,振幅很大。此外,在双原子模型中,133 cm -1的能量使得Li和nh2之间的力常数非常小,为0.05 mdyn/A。这种弱相互作用表明linh2很容易分解成Li和nh2。在100 K以下,我们在100到700 cm -1的能量范围内发现了新的峰。没有额外的振动自由度的结论是转动运动的nh2分子在100k以下冻结。随着温度的升高,nh2中H-N-H键角变窄,N-H键长变长。在反应温度范围内,
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...
通过拉曼散射研究 I 型笼形化合物 X_8Ga_<16>Ge_<30> (X = Eu, Sr, Ba) 中客体离子的动力学运动
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
DOI: 10.1016/j.jallcom.2005.01.052
发表时间: 2005-08-02
影响因子: 6.2
作者:
Hino, S;Ichikawa, T;Fujii, H
通讯作者: Fujii, H
PrOs4Sb12 中声子的大幅软化
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
DOI: 10.1016/s0925-8388(03)00637-6
发表时间: 2004-02-25
影响因子: 6.2
作者:
Ichikawa, T;Isobe, S;Fujii, H
通讯作者: Fujii, H
硅化物超导体 CaAlSi 和 SrA1Si 中的反常声子特性
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