PHASE TRANSITION AND COMPRESSION BEHAVIOR OF GIBBSITE UNDER HIGH-PRESSURE

dc.contributor.author	Liu H.
dc.contributor.author	Hu J.
dc.contributor.author	Xu J.
dc.contributor.author	Liu Z.
dc.contributor.author	Shu J.
dc.contributor.author	Mao H.K.
dc.contributor.author	Chen J.
dc.date.accessioned	2022-10-31T00:38:50Z
dc.date.available	2022-10-31T00:38:50Z
dc.date.issued	2004
dc.identifier	https://www.elibrary.ru/item.asp?id=6470603
dc.identifier.citation	Physics and Chemistry of Minerals, 2004, 31, 4, 240-246
dc.identifier.issn	0342-1791
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/39294
dc.description.abstract	In situ high-pressure synchrotron X-ray diffraction and infrared absorption experiments for gibbsite were performed at room temperature up to 53 and 25 GPa, respectively. A phase transition was confirmed at about 2.5 GPa. The high-pressure phase is indexed as an orthorhombic structure, rather than a triclinic structure as reported in previous studies. The compressibility of gibbsite and its high-pressure polymorph were studied, and their bulk moduli K0 were determined to be 49 and 75 GPa, respectively with K0' as 4. The in situ high-pressure infrared absorption spectra revealed the gradual disordering of hydrogen substructure above 15 GPa in quasihydrostatic compression.
dc.subject	AL(OH)3
dc.subject	HIGH-PRESSURE
dc.subject	PHASE TRANSITION
dc.subject	X-RAY DIFFRACTION
dc.subject	INFRARED ABSORPTION
dc.title	PHASE TRANSITION AND COMPRESSION BEHAVIOR OF GIBBSITE UNDER HIGH-PRESSURE
dc.type	Статья

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