公开(公告)号：JPH08241508A

公开(公告)日：1996-09-17

申请号：JP33694095

申请日：1995-12-25

Applicant: IBM

Inventor： FUN RIAN FUU ,  RODONII EDOGAA RII ,  HIYUUGOO ARUBERUTO EMIRIO SANT ,  CHIN HOWA TSUAN

IPC: G11B5/265 ,  G11B5/31 ,  G11B5/39

Abstract: PROBLEM TO BE SOLVED: To reduce the magnetic resistance of the write coil of an MR head, by extending its insulator stack region from its magnetic-pole end region to its rear gap to dispose its coil region in its insulator stack region separately from its magnetic-pole end region. SOLUTION: The figure shows a merge type MR head constituting an embodiment 30B. The head 30B has a magnetic-pole end region, an insulator stack region and a coil region, and the magnetic-pole end region extends from an ABS to the insulator stack region extended from the magnetic-pole end to a rear gap, and the coil region is disposed in the insulator stack region separately from the magnetic-pole end region. In the embodiment 30B, first and second shield layers S1, S2 are disposed in the magnetic-pole end region to protect an MR sensor. Also, in the embodiment 30B, the first shield layer S1 extends along a slope 50 between the magnetic-pole end region and the coil region to terminate in a position between both the regions. Thereby, there is generated a sunk or recessed portion 51 for the succeeding thin-film layer of the head which constitutes the insulator stack, and a second gap layer G2 extends along the slope 50 of the first shield layer S1 to extend further from the slope 50 to the rear region of the head orthogonally to the ABS.

公开(公告)号：JPH06180825A

公开(公告)日：1994-06-28

申请号：JP22717193

申请日：1993-09-13

Applicant: IBM

Inventor： MAOOMIN CHIEN ,  KENISU CHINNYAN KUN ,  RODONII EDOGAA RII ,  NIIRU RESURII ROBAATOSON

IPC: G11B5/39

Abstract: PURPOSE: To widen the selection width of the material of a second conductive layer by permitting the conductive part of a sensor to be thick so as to reduce the resistance of the whole conductive part in the second conductive layer. CONSTITUTION: 1A magnetoresistance(MR) sensor is provided with an electric conductive part for electrically connecting an MR element to an external circuit. The electric conductive part is provided with the first or the main conductive layer which is superimposed on the bias layer of an end part area 33 in the MR sensor and extends to the air bearing surface(ABS) of the MR sensor. The second conductive layer is adhered on the first conductive layer and its position is offset from ABS, that is, started from a separated point.

公开(公告)号：JPH0217643A

公开(公告)日：1990-01-22

申请号：JP9904789

申请日：1989-04-20

Applicant: IBM

Inventor： HIROSHI ITOU ,  MOHAMEDO TOUFUITSUKU KURONBII ,  RODONII EDOGAA RII

IPC: H01L21/3205 ,  C23C14/04 ,  G03F7/09 ,  G11B5/127 ,  G11B5/187

Abstract: PURPOSE: To easily execute clear lifting off without fencing by giving radiation on a substrate to which prescribed coating is executed through a mask, adhering conductor metal after development and lifting it off by solvent. CONSTITUTION: Poly methyl glutamyl imide(PMGI) whose average molecular weight is within the range of 3000-4000 is used and the PMGI layer 2 is coated. Then, the substrate 1 to which photoresist 3 is overcoated is irradiated with radiation through the mask. When resist 3 and PMGI 2 are developed, structure having the under cut of PMGI 2 remains under resist 3. Then, conductor metal 4 is adhered by sputtering, for example, and the coating of adhered metal 4 is formed on the substrate 1 and resist 3. Then, lift-off is executed by using organic solvent or alkali aqueous solution, for example. Consequently, the substrate is selectively coated without the problem of fencing.