Temperature dependence of the pre-edge structure in the Ti K-edge x-ray absorption spectrum of rutile

TL;DR

This study investigates how the pre-edge features in the Ti K-edge x-ray absorption spectrum of rutile TiO2 change with temperature, revealing growth in specific peaks and explaining their electric quadrupole transition nature.

Contribution

It provides experimental data on temperature effects in Ti K-edge spectra and confirms a recent theory explaining pre-edge peak behavior.

Findings

Pre-edge peaks increase with temperature.

The first two peaks are linked to electric quadrupole transitions.

Experimental results support the recent theoretical explanation.

Abstract

The temperature dependence of the pre-edge features in x-ray absorption spectroscopy is reviewed. Then, the temperature dependence of the pre-edge structure at the K-edge of titanium in rutile TiO2 is measured at low and room temperature. The first two peaks grow with temperature. The fact that these two peaks also correspond to electric quadrupole transitions is explained by a recently proposed theory.