Polyamorphic transitions in Ce-based metallic glasses by synchrotron radiation

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	Polyamorphic transitions in Ce-based metallic glasses by synchrotron radiation
	Duarte, MJ ; Bruna, P ; Pineda, E ; Crespo, D ; Garbarino, G ; Verbeni, R ; Zhao, K ; Wang, WH ; Romero, AH ; Serrano, J
刊名	PHYSICAL REVIEW B
	2011
卷号	84 期号:22
关键词	LIQUID PHASE-TRANSITION HIGH-PRESSURE DENSITY SILICON SYSTEMS CERIUM
ISSN号	1098-0121
通讯作者	Duarte, MJ (reprint author), Univ Politecn Cataluna, EPSC, Dept Fis Aplicada, ICREA, C Esteve Terradas 15, E-08860 Castelldefels, Spain.
中文摘要	We report here on a polyamorphic-phase transition upon application of pressure on a Ce-based metallic glass, Ce(70)Al(10)Ni(10)Cu(10), investigated by x-ray diffraction and inelastic x-ray scattering. This alloy is found to display a strong hysteresis in volume per atom upon application and subsequent release of pressure. The observed structural changes are correlated with changes observed by inelastic x-ray scattering in the elastic constants, acoustic mode frequencies, and sound speed. The results reported here point toward three different amorphous phases for this alloy existing in the 0-25 GPa pressure region: low-and high-density states and an intermediate mixed state that displays a hysteresis behavior. Finally, we discuss the impact of Ce concentration on the polyamorphic transition for a series of Ce-based metallic glass alloys and link it to the phase transformation between gamma-Ce and alpha-Ce under pressure.
收录类别	SCI
资助信息	CICYT [MAT2010-14907]; Generalitat de Catalunya [2009SGR1225, 2009SGR1251]; Conacyt, Mexico [152153]; NSF of China [50921091, 50731008]; MOST973 of China [2007CB613904, 2010CB731603]
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/51131]
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	Duarte, MJ,Bruna, P,Pineda, E,et al. Polyamorphic transitions in Ce-based metallic glasses by synchrotron radiation[J]. PHYSICAL REVIEW B,2011,84(22).
APA	Duarte, MJ.,Bruna, P.,Pineda, E.,Crespo, D.,Garbarino, G.,...&Serrano, J.(2011).Polyamorphic transitions in Ce-based metallic glasses by synchrotron radiation.PHYSICAL REVIEW B,84(22).
MLA	Duarte, MJ,et al."Polyamorphic transitions in Ce-based metallic glasses by synchrotron radiation".PHYSICAL REVIEW B 84.22(2011).