Hydrothermal Synthesis Of The Mn_xZn_1-xO Crystal And The Crystal Sheet Of Nano Boehmite

ZnO crystals were synthesized by hydrothermal method in this work. We obtained MnxZn1-xO DMS by doping the Mn composition and studied its magnetic and ferromagnetic properties. The crystals showed obvious ferromagnetism and the Tc reached 50K. This thesis will provide guidance for exploring the synthesis conditions of MnxZn1-xO DMS. The sheet nano boehmites with different morphology were successfully synthesized by hydrothermal method. The pure a-Al2O3 were first obtained when the lmolL-1KOH andlmolL-1 KBr were used as mineralize at 430癈 with the fill factor of-35% and the Al (OH)3 precursor. When the dopants were Ti ions or the mixture of Ti and Fe ions, the synthesis process of a-Al2O3 was affected. Sapphire crystals or Ti doped sapphire crystals can be obtained when only the content of Ti was lower. When the content of Ti ion was higher, only the boehmite or the nano sheet matix instead of a-Al2O3 crystal was presented in the product. The sheet crystal exhibits regular arrangement, indicating the intense tendency of self- assembly. This study is instructive for exploring the self- assembly process of hydrothermal synthesis.