The structural and magnetic properties of Pr0.1CexTb0.9-xFe1.9 alloys were investigated by using X-ray diffraction, AC susceptibility, VSM and standard strain gauge techniques. The lattice parameter exhibits positive ...The structural and magnetic properties of Pr0.1CexTb0.9-xFe1.9 alloys were investigated by using X-ray diffraction, AC susceptibility, VSM and standard strain gauge techniques. The lattice parameter exhibits positive deviation from Vegard’s law with the increasing Ce content in the range of 0.40.6. Curie temperature decreases linearly with increasing Ce content. The saturation magnetization and magnetostriction decrease when 0.2≤x<0.4 and x>0.6, while abnormally increase with Ce content increasing from 0.4 to 0.6. These abnormal changes of （lattice） parameter, saturation magnetization and magnetostriction can be attributed to the valence fluctuation of Ce （ions.）展开更多
Transportation fuels derived from imported fossil fuels are subjected to the price fluctuations of the global marketplace, and constitute a major expense in the operation of a vehicle. Emissions from the evaporation a...Transportation fuels derived from imported fossil fuels are subjected to the price fluctuations of the global marketplace, and constitute a major expense in the operation of a vehicle. Emissions from the evaporation and combustion of these fuels contribute to a range of environmental and health problems, causing poor air quality and emitting greenhouse gases that contribute to global warming. Alternative fuel created from domestic sources has been proposed as a solution to these problems, and many fuels are being developed based on biomass and other renewable sources. Natural State Research, Inc. proposes a different alternative hydrocarbon fuel which is produced from abundant waste plastic materials. This fuel burns more efficiently and cleaner than commercial gasoline and diesel. The process exists to efficiently convert waste plastic into a reliable low cost source of fuel.展开更多
基金Project(50271023) supported by the National Natural Foundation Science Foundation of China Project(02017) suppor ted by Key Foundation of Education Ministry
文摘The structural and magnetic properties of Pr0.1CexTb0.9-xFe1.9 alloys were investigated by using X-ray diffraction, AC susceptibility, VSM and standard strain gauge techniques. The lattice parameter exhibits positive deviation from Vegard’s law with the increasing Ce content in the range of 0.40.6. Curie temperature decreases linearly with increasing Ce content. The saturation magnetization and magnetostriction decrease when 0.2≤x<0.4 and x>0.6, while abnormally increase with Ce content increasing from 0.4 to 0.6. These abnormal changes of （lattice） parameter, saturation magnetization and magnetostriction can be attributed to the valence fluctuation of Ce （ions.）
文摘Transportation fuels derived from imported fossil fuels are subjected to the price fluctuations of the global marketplace, and constitute a major expense in the operation of a vehicle. Emissions from the evaporation and combustion of these fuels contribute to a range of environmental and health problems, causing poor air quality and emitting greenhouse gases that contribute to global warming. Alternative fuel created from domestic sources has been proposed as a solution to these problems, and many fuels are being developed based on biomass and other renewable sources. Natural State Research, Inc. proposes a different alternative hydrocarbon fuel which is produced from abundant waste plastic materials. This fuel burns more efficiently and cleaner than commercial gasoline and diesel. The process exists to efficiently convert waste plastic into a reliable low cost source of fuel.
