Method for providing a pole in a magnetic recording transducer using a cathodic etch

• Main Authors: MEDINA JOSE A, JIANG TIFFANY YUN WEN, JIANG MING
• Format: Patent
• Language: English
• Published: 15.10.2013
• Subjects: DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; PHYSICS; PUBLIC ADDRESS SYSTEMS

A method for fabricating a magnetic recording transducer is described. The transducer has an ABS location and a nonmagnetic intermediate layer having a pole trench. The method includes depositing at least one magnetic pole layer having a top surface and a pole tip portion proximate to the ABS location. A first portion of the magnetic pole layer(s) resides in the pole trench. The magnetic pole layer(s) have a seam in the pole tip portion that extends to the top surface. The method also includes cathodically etching a second portion of the magnetic pole layer(s) from the seam at a rate of not more than 0.1 nanometers/second, thereby forming a seam trench in the magnetic pole layer(s). The method also includes refilling the seam trench with at least one magnetic refill layer. At least an additional magnetic pole layer is deposited on the top surface and the magnetic refill layer(s).