New Systems of Rare Earth Permanent Magnets for Generation of Eztrahigh Magnetic Fields
Various systems, which are composed of rare-earth permanent magnets and generate strong magnetic fields, are calculated. Strong fields are taken to mean the fields with the strength, which exceeds the magnet induction. Calculated values of the strength of strong fields can mount to 20-150 kOe. Depending on form of domains where this fields are localized they can be classified as linear and point fields, the corresponding systems can be named linear and point as well. It was shown that the maximal linear field can be obtained in Halbach cylinder (prism), in which this field tends to HX = 4πMs ln(a/x) with increasing of number of component sectors. The maximal point field is reached in systems composed of many conical magnets, divided by many sectors. The strength of such field tends to the value HX = 8πMs In(a/x). Experimental values of strong fields measured in some systems by various methods are in good agreement with calculated data.
strong magnetic field linear field point field Halbach cylinder linear system point system sheaf-like system conic system
Dmitriy BELOZOROV Anatoliy RAVLIK Vladimir SAMOFALOV
National Science Center.Kharkov Institute of Physics and Technology, National Academy of Science of National Technical University, Kharkov Polytechnic Institute, 21 Frunze St., Kharkov 61002, Ukraine
国际会议
北京
英文
483-488
2006-08-29（万方平台首次上网日期，不代表论文的发表时间）