Fig. 1. XRD spectra of LMO powder and crystal

Fig. 2. LMO ingot grown with our aqueous solution method and its outline drawing. (a) Photo of LMO ingot; (b) outline drawing

Fig. 3. Morphology of LMO crystal grown (arrow represents the step moving direction)

Fig. 4. Absorption spectra of LMO crystal

Fig. 5. Excitation spectra of LMO crystal grown at different temperatures. (a) At room temperature; (b) at low temperature (10 K)

Fig. 6. Emission spectra of LMO crystal at different temperatures. (a) At room temperature; (b) at low temperature