Single crystal X-ray diffraction study on the bond compressibility of fayalite, Fe2SiO4 and rutile, TiO2 under high pressure

✍ Scribed by Y. Kudoh; H. Takeda

• Publisher: Elsevier Science
• Year: 1986
• Weight: 225 KB
• Volume: 139-140
• Category: Article
• ISSN: 0378-4363
• DOI: 10.1016/0378-4363(86)90591-7

✦ Synopsis

The effect of pressure on the bond compressibility in the crystal structures of fayalite, Fe2SiO 4 and rutile, TiO 2 were investigated by using a diamond anvil cell designed for this study and a four-circle single crystal X-ray diffractometer. The mean linear compressibilities of the Fe-O, Si-O and Ti-O bonds were 0.22Mbar t, 0.05Mbar i and 0.18Mbar -1, respectively. A general principle that the longer bond is more compressible than the shorter one is in accord with the present results only within the stability field.