Correlation Between The Size Of Nd_(60)Fe_(30)Al_(10) Sample, Cast By Various Techniques And Its Coercivity

摘要

The present study is concerned with the correlation between the magnetic properties of the Nd_(60)Fe_(30)Al_(10) sample and its size, in particular its dimension measured in the direction of heat removal. We compared samples produced using the three methods: melt-spinning, die casting under pressure, and suction casting. The samples were of various shapes such as ribbons, plates, rods and pipes. We found that despite the differences in the shape of the samples and the technique of their casting, their magnetic properties did not differ significantly. Hence we may conclude that it is the sample dimension measured along the direction perpendicular to the heat-removing surface which is the parameter that mostly decides about the cooling rate.