High pressure synthesis of FeO-ZnO solid solutions with rock salt structure: in situ X-ray diffraction studies

TL;DR

This study used in situ synchrotron X-ray diffraction to investigate high-pressure synthesis of FeO-ZnO solid solutions with rock salt structure, revealing temperature-dependent formation and properties under 4.8 GPa.

Contribution

First in situ X-ray diffraction analysis of FeO-ZnO interactions at high pressure, demonstrating formation of rock salt solid solutions and their thermal expansion characteristics.

Findings

Formation of Fe1-xZnxO solid solutions above 750 K

Lattice parameters measured as a function of temperature

Thermal expansion coefficients calculated

Abstract

X-ray diffraction with synchrotron radiation has been used for the first time to study chemical interaction in the FeO-ZnO system at 4.8 GPa and temperatures up to 1300 K. Above 750 K, the chemical reaction between FeO and ZnO has been observed that resulted in the formation of rock salt (rs) Fe1-xZnxO solid solutions (0.3 \leq x \leq 0.85). The lattice parameters of these solid solutions have been in situ measured as a function of temperature under pressure, and corresponding thermal expansion coefficients have been calculated.