Erratum to: Revised Phase Diagram and X‐Ray Data of the Mn₃O₄–Al₂O₃ System in Air

Abstract

The oxygen parameters used in calculating the structure-factor expression should be read as u = : 114 and u = 0.234, appropriate t o the centrosyminetric setting of the spinel structure. These correspond t o u = 318 and u = 0.391 in the acentric setting.

Low- and high-temperature oxidation of Mn1.5Al1.5O4in relation to decomposition mechanism and microstructure

“…Such a chemical composition corresponds to a phase diagram of the Mn-Al-O system. 20 Upon further cooling to T = 650 °C, the Mn-Al cubic spinel decomposes with the formation of Mn 2.8 Al 0.2 O 4 and Mn 0.4 Al 2.4 O 4 . Further cooling doesn't lead to changes.…”

“…Such composition is metastable because at temperatures below 900 °C, the stable phases are α-Mn 2 O 3 and α-Al 2 O 3 . 20 New results allow us to propose a more detailed scheme (mechanism) of decomposition including microstructural transformations observed by TEM (Fig. 10).…”