Abstract
We report the electron paramagnetic resonance (EPR) studies of MgTi2O4 in the 300–140 K range. Above the transition temperature Tt (~258 K), the EPR results indicate that MgTi2O4 is paramagnetic. The parameters of the EPR spectra show an anomalous change at Tt. The clear EPR lines can be observed in temperature between Tt and 220 K. Besides that the EPR intensity, g value, and EPR linewidth increase with decreasing temperature; in temperature range below 220 K, no clear EPR line can be detected. The EPR spectra results demonstrate that magnetic spin-singlet state and the orbital density wave of MgTi2O4 system are formed gradually with decreasing temperature at low temperature range.
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