纵向磁记录从理论和实践的研究得出结论,线密度已接近其理论极限,今后发展的潜力甚小。纵向记录随波长λ→0,自去磁场Hd→4πMs,同时受磁介质、磁头材料及其工艺的限制,在高密度记录时在磁介质中产生园形磁化。而垂直记录从理论到实验均已证实,随波长λ→0,H_d→0,因此适合高码密度记 Longitudinal magnetic recording from the theory and practice of the study concluded that the linear density is close to its theoretical limit, the potential for future development is very small. Longitudinal record with the wavelength λ → 0, from the demagnetization field Hd → 4πMs, at the same time by the magnetic media, head material and process constraints, in high-density recording in the magnetic medium to produce circular magnetization. The vertical record from theory to experiment have confirmed that with the wavelength λ → 0, H_d → 0, so suitable for high code density