期刊
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
卷 260, 期 7, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssb.202300079
关键词
alpha-to-omega transition; electrical resistivity; high pressure; titanium and zirconium
This study reports the changes in electrical resistivity of titanium (Ti) and zirconium (Zr) at room temperature under pressures up to 20 GPa using a 4-wire resistivity method. The resistivity slopes of both metals change at different pressures. At 10 GPa, the resistivity of Ti increases with pressure while the resistivity of Zr decreases. This difference is attributed to incoherent scattering in Ti and coherent scattering in Zr during their solid α->ω transition. Furthermore, the study allows constraining the boundaries of the α->ω phase coexistence region in Zr to be 4-8 GPa.
The group IV metals Ti and Zr are isoelectronic and crystallize in a hexagonal closed packed structure at ambient conditions. Herein, the electrical resistivity of Ti and Zr at room temperature with increasing pressure up to 20 GPa is reported using a 4-wire resistivity method. The slope of their resistivity against pressure changes value at various pressures. At 10 GPa, resistivity of Ti increases with pressure whereas Zr resistivity decreases with pressure. The opposite behavior is interpreted to be due to incoherent scattering in Ti versus coherent scattering in Zr, as both undergo solid alpha -> omega transition. By comparing the Zr result with a previous study that combined in situ X-ray synchrotron with compressional and shear wave velocity measurement, the boundaries of the region of alpha -> omega phase coexistence are constrained in Zr to be 4-8 GPa. The Ti result will be valuable for constraining its boundary when such in situ velocity measurement becomes available for Ti as well.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据