抄録
A magnetic recording head using separated read and write elements can reduce the number of write coil turns. Therefore, the write element construction can be made simply on this type of thin film head. However a large current is required and heat is generated when a square-wave write current waveform is used due to fewer coil turns. A pulse train write current waveform is one solution to this problem this reduces heat generation, cross feed and power dissipation. We discuss the possibility of high density magnetic recording using a pulse train recording. A two-turn coil write head and MR read head were used for the experiment. We found no significant difference of write-read characteristics from a conventional square-wave NRZI write current waveform. Double density NRZI pulse train recording best minimized the bit error rate, and a recording density more than double that for NRZI was attainable.
