Ni0.4Cu0.2Zn0.4Fe2O4 thin films were fabricated on Si substrates by using the sol-gel method and rapid thermal annealing （RTA）, and their magnetic properties and crystalline structures were investigated. The samples...Ni0.4Cu0.2Zn0.4Fe2O4 thin films were fabricated on Si substrates by using the sol-gel method and rapid thermal annealing （RTA）, and their magnetic properties and crystalline structures were investigated. The samples calcined at and above 600 ℃ have a single-phase spinel structure and the average grain size of the sample calcined at 600 ℃ is about 20 nm. The initial permeability μi, saturation magnetization M and coercivity H of the samples increase with the increasing calcination temperature. The sample calcined at 600 ℃ exhibits an excellent soft magnetic performance, which has μi=33.97 （10 MHz）, Hc=15.62 Oe and Ms=228.877 emu/cm^3. Low-temperature annealing can enhance the magnetic properties of the samples. The work shows that using the sol-gel method in conjunction with RTA is a promising way to fabricate integrated thin-film devices.展开更多
Zn0.4Cd0.6S/TiO2/Reduced graphene oxide(Zn0.4Cd0.6S/TiO2/RGO)nano-photocatalyst was synthe-sized by a facile solvothermal method.During the reaction,TiO2 and Zn0.8Cd0.2S nanoparticles were evenly dispersed across the ...Zn0.4Cd0.6S/TiO2/Reduced graphene oxide(Zn0.4Cd0.6S/TiO2/RGO)nano-photocatalyst was synthe-sized by a facile solvothermal method.During the reaction,TiO2 and Zn0.8Cd0.2S nanoparticles were evenly dispersed across the surface of RGO,which enhanced response to visible light.The photocatalytic activity of as-synthesized Zn0.4Cd0.6S/TiO2/RGO nanocomposite was studied by means of degrading methylene blue(MB)through the irradiation of visible light.Compared with other nanocomposites,the Zn0.4Cd0.6S/TiO2/RGO nanocomposite showed the highest photocatalytic degradation efficiency(96%)and high stability,which was 5.4 times of photodegradation efficiency of pure TiO2.展开更多
基金the National Natural Science Foundation of China (No. 90607021).
文摘Ni0.4Cu0.2Zn0.4Fe2O4 thin films were fabricated on Si substrates by using the sol-gel method and rapid thermal annealing （RTA）, and their magnetic properties and crystalline structures were investigated. The samples calcined at and above 600 ℃ have a single-phase spinel structure and the average grain size of the sample calcined at 600 ℃ is about 20 nm. The initial permeability μi, saturation magnetization M and coercivity H of the samples increase with the increasing calcination temperature. The sample calcined at 600 ℃ exhibits an excellent soft magnetic performance, which has μi=33.97 （10 MHz）, Hc=15.62 Oe and Ms=228.877 emu/cm^3. Low-temperature annealing can enhance the magnetic properties of the samples. The work shows that using the sol-gel method in conjunction with RTA is a promising way to fabricate integrated thin-film devices.
文摘Zn0.4Cd0.6S/TiO2/Reduced graphene oxide(Zn0.4Cd0.6S/TiO2/RGO)nano-photocatalyst was synthe-sized by a facile solvothermal method.During the reaction,TiO2 and Zn0.8Cd0.2S nanoparticles were evenly dispersed across the surface of RGO,which enhanced response to visible light.The photocatalytic activity of as-synthesized Zn0.4Cd0.6S/TiO2/RGO nanocomposite was studied by means of degrading methylene blue(MB)through the irradiation of visible light.Compared with other nanocomposites,the Zn0.4Cd0.6S/TiO2/RGO nanocomposite showed the highest photocatalytic degradation efficiency(96%)and high stability,which was 5.4 times of photodegradation efficiency of pure TiO2.
