Pre-edge fine structure (PEFS) of the K-XAS for the 3d atoms in compounds: A new tool for quantitative atomic structure determination

R. V. Vedrinskii, V. L. Kraizman, A. A. Novakovich, Ph V. Demekhin, S. V. Urazhdin, B. Ravel, E. A. Stern

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The two mechanisms are shown to be mainly responsible for the formation of the K-XAS PEFS for the 3d-atoms in the compounds: p-d mixture (PDM) which makes allowed the 1s-electron transitions to the absorbing atom 3d-states influenced by the screened hole potential and the 1s-electron transitions to the unoccupied 3d-states of the neighbouring atoms. The intensities of the PDM induced peaks strongly depend on the displacement of the absorbing atom from the center of inversion symmetry and on the X-ray polarization vector e direction. Taking into account this dependence and employing the experimental Ti K-XAS for the PbTiO3 monocrystal measured for different temperatures and directions of the vector e the ferroelectric phase transition in this crystal has been studied.

Original languageEnglish
Pages (from-to)C2-107-C2-110
JournalJournal De Physique. IV : JP
Volume7
Issue number2 Part 1
DOIs
StatePublished - 1997
Externally publishedYes

Fingerprint

Dive into the research topics of 'Pre-edge fine structure (PEFS) of the K-XAS for the 3d atoms in compounds: A new tool for quantitative atomic structure determination'. Together they form a unique fingerprint.

Cite this