| 摘要 |
PURPOSE:To obtain a narrow track magnetic head having an excellent electromagnetic conversion characteristic, by allowing an Mn-Zn ferrite and a nonmagnetic ceramic to adhere to each other with glass. CONSTITUTION:In respect to a magnetic head where an Mn-Zn ferrite and a nonmagnetic ceramic are allowed to adhere to each other with glass, the Mn-Zn ferrite consisting of 50-55mol% iron oxide, 16-25mol% zinc oxide, and the rest of a manganese oxide and various additives and the nonmagnetic ceramic where an average coefficient of thermal expansion at 0-400 deg.C is 70-95X10<-7> are used, and both of them are allowed to adhere to each other with glass having a softening point of 701-800 deg.C. A recording/reproducing head A and an erasing head B are produced from an obtained block material having no cracks, and a slider 5 consisting of a nonmagnetic ceramic is allowed to adhere to them, thus producing the magnetic head. |
