| 摘要 |
PURPOSE:To decrease the number of film forming processes and at the same time to shield effectively the leakage of magnetic flux from a medium which is not required for detection, by forming a shielding layer at the area near a magneto-resistance element excepting the effective sense part of the element. CONSTITUTION:A sense part (MR layer) 4 formed by an Ni(80%)-Fe(20%) alloy through an electron beam vapor deposition process, etc. is vapor deposited about 500Angstrom on a substrate 1 of glass, etc. A protecting film 5 of glass, etc. is adhered to the other side of the substrate 1. Then a rubbing surface is formed by the cylindrical grinding. A shielding layer 2 of ''Sendust'', etc. is vapor deposited with 0.5-1mum thickness on the entire rubbing surface by a sputtering process, etc. Then an opening part 7 having about 3mum width is formed at the position of the MR layer 4 by an etching process, etc. Thus the magnetic flux leaked out from a medium that is undesired for detection is effectively shielded by the shielding layer 2 formed on the head rubbing surface. |
