Manufacture of magnetic head

Abstract

Abstract PURPOSE:To form a gap keeping its shape and without any air voids by sputtering a combination of high-softening point glass and low-softening point glass when a magnetic gap is formed. CONSTITUTION:When a magnetic gap-forming surface between a C-core 1 having an amorphous metallic magnetic thin film and an I-core 2, a high-softening point glass film 6 is firstly sputtered on both cores in thickness half the length of the gap. A low-softening point glass film 7 is sputtered thereon in 0.02-0.05mum thickness, and both cores are combined with a jig. The cores are heated in an electric furnace at 400-450 deg.C which corresponds to the working temp. of the low-softening point glass, and welded. Consequently, since the welding is carried out at a temp. lower than the crystallization temp. of the amorphous metallic magnetic thin film, the shape of the gap is kept, and an excellent gap without any air voids can be formed.

Inventors

• 👤 Masatsugu Miura
• 👤 正嗣 三浦
• 👤 Yoshiharu Sato
• 👤 佐藤　由春

Bibliographic Details