Cubic ↔ Orthorhombic Transition in the Stoichiometric Spinel LiMn[sub 2]O[sub 4]
- 1 January 1999
- journal article
- Published by The Electrochemical Society in Electrochemical and Solid-State Letters
- Vol. 2 (1) , 6-8
- https://doi.org/10.1149/1.1390716
Abstract
The stoichiometric spinel undergoes a transition from cubic to orthorhombic symmetry close to room temperature. Differential scanning calorimetry and conductivity experiments show that the transition takes place at upon cooling with a hysteresis of during heating. This transition makes adopt either the cubic or orthorhombic form at room temperature, depending on its thermal history. Rietveld refinements of neuron diffraction data recorded at confirm the cubic symmetry and an oxygen stoichiometry of in our sample, a value which was fully confirmed by redox titration. At , the symmetry is orthorhombic and superstructure reflections are clearly observed, leading to a supercell ©1999 The Electrochemical SocietyKeywords
This publication has 0 references indexed in Scilit: