X-ray diffraction and small-angle x-ray scattering measurements on expanded fluid selenium

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	X-ray diffraction and small-angle x-ray scattering measurements on expanded fluid selenium
	Inui, M ; Noda, T ; Tamura, K ; Li, C
刊名	JOURNAL OF PHYSICS-CONDENSED MATTER
	1996
卷号	8 期号:47 页码:9347
关键词	LIQUID SELENIUM REGION
ISSN号	0953-8984
通讯作者	Inui, M (reprint author), HIROSHIMA UNIV,FAC INTEGRATED ARTS & SCI,HIGASHIHIROSHIMA 739,JAPAN.
中文摘要	To investigate the structural change in the semiconductor-to-metal transition in expanded fluid selenium x-ray diffraction and small-angle x-ray scattering (SAXS) measurements at high temperatures and pressures up to 1650 degrees C and 1500 bar have been carried out. The results of the x-ray diffraction study show that the twofold-coordinated structure is largely preserved in the metallic fluid. The covalent bond becomes short at around 1200 degrees C, where the metallic character starts to be enhanced. These results suggest that the local structure of chain molecules changes with the transition. Since the semiconductor-to-metal transition occurs near the liquid-gas critical point, it is important to study how the critical density fluctuations are concerned with the transition. The SAXS spectra at 400 bar show that a broad peak appears at around 0.12 Angstrom(-1) above 1200 degrees C, which may suggest density fluctuations with a correlation length of about 50 Angstrom in the metallic fluid.
收录类别	SCI
语种	英语
公开日期	2013-09-23
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/46691]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Inui, M,Noda, T,Tamura, K,et al. X-ray diffraction and small-angle x-ray scattering measurements on expanded fluid selenium[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,1996,8(47):9347.
APA	Inui, M,Noda, T,Tamura, K,&Li, C.(1996).X-ray diffraction and small-angle x-ray scattering measurements on expanded fluid selenium.JOURNAL OF PHYSICS-CONDENSED MATTER,8(47),9347.
MLA	Inui, M,et al."X-ray diffraction and small-angle x-ray scattering measurements on expanded fluid selenium".JOURNAL OF PHYSICS-CONDENSED MATTER 8.47(1996):9347.