Collapsed hexagonal ω phase in a compressed TiZr alloy:: Angle-dispersive synchrotron-radiation x-ray diffraction study -: art. no. 094114

被引：13

作者：

Dmitriev, VP

Dubrovinsky, L

Le Bihan, T

Kuznetsov, A

Weber, H-P

Poniatovsky, EG

机构：

[1] European Synchrotron Radiat Facil, Swiss Norwegian Beam Lines, F-38043 Grenoble, France

[2] Univ Bayreuth, Bayer Geoinst, D-95440 Bayreuth, Germany

[3] Swiss Fed Inst Technol, LCr, IPMC, FSB, CH-1015 Lausanne, Switzerland

[4] Russian Acad Sci, ISSP, Chernogolovka 142432, Russia

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.73.094114

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An in situ high-temperature high-pressure angle-dispersive synchrotron radiation diffraction study has revealed the omega-to-omega(') isostructural transformation in the equiatomic TiZr alloy. Volume collapse across the phase transformation is about 14%. On further compression the collapsed omega(') structure transforms to a noncollapsed cubic beta structure with the partial atomic volume increase about 13%. Observed effects are discussed in terms of the s-d electron transfer and nonadiabatic electron-phonon interactions.

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