JPS6417207A - Magnetic head - Google Patents

Abstract

PURPOSE:To prevent a chip and a crack of a core base body and a bond at the time of formation, by interposing and providing a nonmagnetic soft thin metallic film both between the core base body and a magnetic thin film and between the magnetic thin film and the bond, respectively. CONSTITUTION:As for a first core half body 4 of two core half bodies 4, 5 for constituting a recording and reproducing head 1, a first soft metallic layer 32, a first magnetic thin film 13, and a second soft metallic layer 36 are laminated successively on a projecting part 10 of a first core base body 11 which has been formed in a crest shape. The second core half body 5 for constituting the recording and reproducing head 1 is also the same as the first core half body 4. When the soft metallic layer is interposed and provided, between the core base body and the magnetic thin film, and between the magnetic thin film and the bond, even if a thermal stress caused by a difference of coefficients of thermal expansion of both of them works, its thermal stress is absorbed by the soft metallic layer. In such a way, a chip or a crack is not generated in the core base body and the bond, and a magnetic head whose yield is high and whose reliability is excellent can be obtained.