Change in work function during phase transition of Sc–O/W(1 0 0) system at high temperatures
Change in work function during phase transition of Sc–O/W(1 0 0) system at high temperatures
复制标题
Sc-O/W(1 0 0)体系高温相变过程中功函数的变化
DOI：
10.1016/j.apsusc.2009.05.116
复制
发表时间：
2009
影响因子：
6.7
通讯作者：
Y. Takai
中科院分区：
文献类型：
--
作者：
Y. Nakanishi;T. Nagatomi;Y. Takai
The change in work function during the phase transition of a Sc–O/W(100) system at high temperatures of 1500–1700K was investigated in order to elucidate the mechanism of the decrease in the work function of a (1×1)-Sc–O/W(100) surface. For the measurement of the work function using a secondary electron method at high temperatures, a sample holder was uniquely designed in order to suppress contributions of a large number of thermionic electrons emitted from a low-work-function surface. The obtained work function revealed that the change in work function strongly correlates with the coverage of Sc–O complexes, the stoichiometry of which is Sc1O1. The higher the coverage of ScO is, the lower the work function is, suggesting that the work function of the (1×1)-Sc–O/W(100) surface is reduced by the formation of ScO electric dipoles. Furthermore, the decrease in work function was modeled in combination with a previously reported kinetic model describing surface phenomena, i.e., the oxidation, oxygen desorption, diffusion and surface segregation of Sc–O complexes, during the phase transition of the Sc–O/W(100) surface at high temperatures. It was confirmed that the proposed model can explain the experimentally obtained change in work function very well. The value of the dipole moment of a ScO electric dipole was determined to be 2.7×10−30Cm.
影响因子：
1.5
作者：
S. Iida;Y. Nakanishi;T. Nagatomi;Y. Takai
通讯作者：
S. Iida;Y. Nakanishi;T. Nagatomi;Y. Takai
通过功函数测量对多种短周期 BN d 掺杂硅进行溅射深度分析
DOI：
--
发表时间：
2005
期刊：
Japanese Journal of Applied Physics Vol.44 No.8
影响因子：
--
作者：
Y.Mizuhara;T.Bungo;T.Nagatomi;Y.Takai
通讯作者：
Y.Takai
Sc-O/W(100)体系高温相变俄歇谱形分析
DOI：
--
发表时间：
2008
期刊：
Surface and Interface Analysis 40
影响因子：
--
作者：
Y. Nakanishi;T. Nagatomi;Y. Takai
通讯作者：
Y. Takai