| 摘要 |
PURPOSE:To improve the utilization factor of a magnetic flux in an MR head by forming a magnetoresistance effect element thin film to a multilayer film made of plural films and connecting them in parallel magnetically and in series electrically. CONSTITUTION:The titled head consists of a ferromagnetic base 1, an MR element 2, an FG3, a nonmagnetic body 4 made of glass and MR films 9a, 9b, 9c. The MR films 9a, 9b, and 9b, 9c are short-circuited electrically by track width ends 10a, 10b. A current flows to terminals A, B. Through the constitution above, the magnetic resistance of the MR section is reduced to 1/3, the magnetic resistance of the entire circulating magnetic path is reduced nearly to the same degree and the magnetic flux circulated in the magnetic path is increased to nearly 3 times. Since the magnetic flux is shunted into a 3-layer MR film, the resistance change in all the MR elements contributes to the output and the output is increased nearly 3 times. Thus, the utilization factor of the magnetic flux is improved. |
