Sound velocity and density measurements of solid iron alloys under high-pressure and high-temperature conditions

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K17784
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Petrology/Mineralogy/Economic geology
• Research Institution: Tohoku University
• Principal Investigator: Shibazaki Yuki 東北大学, 学際科学フロンティア研究所, 助教 (10730830)
• Research Collaborator: NISHIDA Keisuke 東京大学, 大学院理学系研究科, 助教 (40530887)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 高温高圧 / 惑星中心核 / 鉄 / 弾性波速度

Outline of Final Research Achievements

Measurements of sound velocity and density of solid iron were carried out under high-pressure and high-temperature conditions in order to discuss the compositions of planetary cores. Sound velocities, P-wave and S-wave velocities, of bcc- and fcc-Fe decrease with increasing temperature at a given density. These results will play a key role in discussing the compositions of planetary cores such as the Earth and Mars.

Free Research Field

高圧地球科学