Increasing the Solubility Limit for Tetrahedral Aluminium in ZnO:Al Nanorods by Variation in Synthesis Parameters

Table 1

spin-lattice relaxation times with their corresponding fractions (% of total amount of tetrahedral Al) observed for the tetrahedrally coordinated Al of the ZnO:Al powders obtained after a solvothermal treatment of 96 h and after stirring during 6 h solvothermal treatment.

	96 h @ 200°C without stirring		6 h @ 200°C with stirring
	relaxation time (ms)	Fraction	relaxation time (ms)	Fraction
Interstitial tetrahedral Al	4.6	23%	24.8	34%
Substitutional tetrahedral Al	808	77%	725	66%