Absence of phase transformation at low temperature in Co-doped LiMn2O4 samples
Journal
Journal of the Chemical Society, Dalton Transactions
Journal Issue
1
Pages
37-40
Date Issued
2001
Author(s)
Abstract
The phase transition in spinel LiMn2O4 was investigated using powder synchrotron radiation diffraction. A transition from cubic (Fd3m) to orthorhombic (Fddd) was observed around T = 220 K. Increasing the average valence of Mn by doping Co into the [Mn2O4] framework, LiMn1.9Co0.1O4, reduced the concentration of Mn3+ ions, suppressed the Jahn-Teller distortion and the cubic phase was retained at low temperature. © The Royal Society of Chemistry 2001.
Other Subjects
Cobalt; Doping (additives); Energy dispersive spectroscopy; Low temperature effects; Phase transitions; Synchrotron radiation; Synthesis (chemical); X ray powder diffraction; Solid state reactions; Lithium compounds
Type
journal article