Importance

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Abstract

A magnetic recording and reading device which has a transfer rate of not less than 50 MB/s and which includes a magnetic recording medium having an absolute value of normalized noise coefficient per recording density of not more than 2.5.times.10.sup.-5 (.mu.Vrms)(inch)(.mu.m).sup.0.5 /(.mu.Vpp), and a magnetic head which is mounted on an integrated circuit suspension so that a total inductance is reduced to be not more than 65 nH. The magnetic head has a magnetic core which is not more than 35 .mu.m of length, a part of the magnetic core being formed by a magnetic film having a resistivity exceeding at least 50 .mu..OMEGA.cm or by a multilayer film consisting of a magnetic film and an insulating film. A fast R/W-IC having a line width of not more than 0.35 .mu.m is also provided. The magnetic head is provided with a reading element including one of a giant magnetoresistance effect element and a thin film having tunneling-magnetoresistance effect, with an effective track width of not more than 0.9 .mu.m, and performs the reading of magnetic information at an areal density of not less than 5 Gb/in.sup.2.

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First Claim