高圧下でのX線を用いた構造解析と格子振動解析 Structure and Lattice Vibration Analyses under High Pressure using X-ray Diffraction and X-ray Absorption Techniques
The single-crystal x-ray diffraction method using a diamond anvil cell is an important method for crystal structure determination under high-pressure. The x-ray absorption spectroscopy under high-pressure provides the detailed information on local structure around particular kinds of atoms, even if the crystal structure is unknown. Extended x-ray absorption fine structure (EXAFS) spectroscopy is useful as a probe of vibration dynamics under pressure. An anharmonic effective pair potential can be investigated using the EXAFS technique. The knowledge of the local structure is of primary importance for the understanding of the complicated physical properties of solid solutions. The change of the spin state of the Co<SUP>4+</SUP> ion in the perovskite-type Sr (Co, Mn) O<SUB>3</SUB> solid solution whose magnetic properties varies according to the compositions have been explained based on the local structure analysis.
- 高圧力の科学と技術 = The Review of high pressure science and technology
高圧力の科学と技術 = The Review of high pressure science and technology 10(3), 228-234, 2000-08-20
The Japan Society of High Pressure Science and Technology