MOCVD of magnesium titanium oxide thin films using an unusual magnesium precursor

A large red-shift in the photoluminescence emission of Mg 1−x Sr x TiO 3

“…However, it is still possible to observe the formation of a second phase MgTi 2 O 5 at this given temperature. In the pure phase MTO powders are obtained at 700 • C and all of the diffraction peaks can be indexed as a rhombohedral ilmenite-type structure with space group R-3H (see Figure 2), which is in agreement with the respective Joint Committee on Powder Diffraction Standards (JCPDS) card 06-0494 and with the diffraction peaks previously reported in the literature [18][19][20]. Figure 2 shows a representation of the unit cells of the MTO rhombohedral ilmenite-type structure with space group R-3H.…”

Very Intense Distinct Blue and Red Photoluminescence Emission in MgTiO3 Thin Films Prepared by the Polymeric Precursor Method: An Experimental and Theoretical Approach

“…In these crystalline films, all diffraction peaks can be indexed to the rhombohedral structure, which is in agreement with the respective Joint Committee on Powder Diffraction Standards (JCPDS) card no. 06-0494 and with the diffraction peaks previously reported in the literature. , …”

“…The PL emission was attributed to the structural order–disorder and/or distortions on the [TiO 6 ]–[TiO 6 ] complex clusters . Most of the studies on MTO have been limited to the bulk crystal form; very few studies on MTO thin films have been reported. − …”

Raman Study of the Comparative Effects of Conventional and Microwave Annealing on MgTiO3 Thin Films Sputtered on Si Substrate

“…[45,48] These results are consistent with those reported in the literature by Surendran et al [3] who showed that the MgTiO 3 thin film deposited on a platinum-coated silicon substrate by the sol-gel method was degraded into Mg 2 TiO 4 and TiO 2 phases after annealing at 800 C for 1 h in air atmosphere. The Mg 2 TiO 4 structure has also been detected with magnesium titanium oxide thin films deposited on fused quartz by MOCVD after annealing at 800 C. [49] So, we can say that MgTiO 3 thin films are more thermally stable in our case because the MgTiO 3 phase is observed after CA done at 800 C and after MA performed at 1000 C. The MgTi 2 O 5 phase is then detected after MA performed at 1200 C for 5 min. In fact, a reaction between MgTiO 3 and TiO 2 can form a fully disordered MgTi 2 O 5 powder at high temperature as already reported in the study by Lennie et al [50] On the other hand, the annealing temperature of 1200 C may seem low compared to that reported in the literature, which is 1860 C, [50] but it is extrapolated and these results have been obtained using powder.…”

“…The Mg 2 TiO 4 structure has also been detected with magnesium titanium oxide thin films deposited on fused quartz by MOCVD after annealing at 800 °C. [ 49 ] So, we can say that MgTiO 3 thin films are more thermally stable in our case because the MgTiO 3 phase is observed after CA done at 800 °C and after MA performed at 1000 °C. The MgTi 2 O 5 phase is then detected after MA performed at 1200 °C for 5 min.…”