Two disordered phases; Macroscopic fluid-liquid phase separation in phosphorus

Katayama, Yoshinori

By means of in-situ high-temperature and high-pressure experiment, we found two distinct structures of molten phosphorus, one is a molecular fluid and the other is a polymeric liquid, and an abrupt and reversible structural transformation between them at about 1 GPa. Further investigations revealed that the two structures have different densities and they separate macroscopically during the transformation. These results support a view that this change is an extremely rare example of a first-order phase transition between two stable disordered phases besides liquid-gas transition.

Language	:	Japanese
Journal	:	Nihon Butsuri Gakkai-Shi
Volume	:	60
Number	:	6
Pages	:	p.456 - 460
Publication Year/Month	:	2005/06
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Paper URL	:	http://ci.nii.ac.jp/naid/110002078801
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Keywords	:	液体; 流体; 相転移; リン; 高温; 高圧; X線; 放射光; ラジオグラフィー; 相分離
Research Facility	:	SPring-8(大型放射光施設)
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Registration No. : A20050020
JAEA Abstracts No. : 330737
Paper Submission No. : 22040

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