摘要:
A method for forming a write pole comprises forming a stop layer over a substrate layer of a wafer, the stop layer having an opening above a damascene trench in the substrate layer, and forming a buffer layer over the stop layer, the buffer layer having an opening above the opening of the stop layer. The method further comprises plating a layer of magnetic material over the wafer, disposing a first sacrificial material over a region of the magnetic material above the damascene trench, performing a milling or etching operation over the wafer to remove the magnetic material not covered by the first sacrificial material and to remove the first sacrificial material, disposing a second sacrificial material over the wafer, and performing a polishing operation over the wafer to remove the region of the magnetic material above the damascene trench, the second sacrificial material, and the buffer layer.
摘要:
Methods of forming a write pole are disclosed. A structure comprising a bottom insulating layer and a top insulating layer is provided. A top damascene trench is formed in the top insulating layer, and a bottom damascene trench is formed in the bottom insulating layer. The bottom damascene trench and a portion of the top damascene trench are filled with a pole material. The top insulating layer and a portion of the pole material located above the bottom damascene trench are removed.
摘要:
Methods of producing magnetic recording heads are disclosed. The methods can include providing a wafer comprising a substrate layer in which are disposed a plurality of damascene trenches. The method can further include depositing a pole material across the whole wafer, wherein the plurality of trenches are filled with the pole material. The methods can further include depositing a mask material over the pole material across the whole wafer. The methods can further include performing a first material removal process across the whole wafer to remove the mask material and a first portion of the pole material at a same material removal rate. The methods can further include performing a second material removal process to remove a second portion of the pole material above the substrate layer.
摘要:
A method provides a pole of magnetic recording transducer. A nonmagnetic stop layer having a thickness and a top surface is provided. A depression that forms a bevel is provided in the stop layer. The bevel has a depth less than the thickness and a bevel angle with respect to a remaining portion of the top surface. The bevel angle is greater than zero and less than ninety degrees. An intermediate layer having a substantially flat top surface is provided over the stop layer. A trench is formed in the intermediate layer via a removal process. The trench has a profile corresponding to the pole. The stop layer is a stop for the removal process. The method also includes providing the pole in the trench. The pole has a leading edge bevel corresponding to the bevel in the stop layer.
摘要:
A process for fabricating a magnetic recording transducer for use in a data storage system comprises providing a substrate, an underlayer and a first nonmagnetic intermediate layer deposited to a first thickness on and in contact with the underlayer, performing a first scanning polishing on a first section of the first intermediate layer to planarize the first section of the first intermediate layer to a second thickness, providing a main pole in the planarized first section of the first intermediate layer, providing a first pattern of photoresist on and in contact with the first section of the first intermediate layer, the pattern comprising an aperture to define a side shield trench, performing a wet etch to remove at least a portion of the first intermediate layer thereby exposing at least one of the plurality of main pole sides, and depositing side shield material in the side shield trench.
摘要:
A method for providing a structure in a magnetic transducer is described. The method includes performing a first planarization that exposes a top surface of the magnetic transducer. This first planarization also terminates before a portion of a first planarization buffer layer is removed. The method also includes providing a second planarization buffer layer after the first planarization is performed. The second planarization buffer layer is above the first planarization buffer layer. The method also includes performing a second planarization. This second planarization does not completely remove the second planarization buffer layer. The method also includes performing a third planarization terminating after the first planarization buffer layer is exposed and before the first planarization buffer layer is completely removed.
摘要:
A method and system for fabricating a read sensor on a substrate for a read transducer is described. A read sensor stack is deposited on the substrate. A mask is provided on the on the read sensor stack. The mask has a pattern that covers a first portion of the read sensor stack corresponding to the read sensor, covers a second portion of the read sensor stack distal from the read sensor, and exposes a third portion of the read sensor stack between the first and second portions. The read sensor is defined from the read sensor stack. A hard bias layer is deposited. An aperture free mask layer including multiple thicknesses is provided. A focused ion beam scan (FIBS) polishing step is performed on the mask and hard bias layers to remove a portion of the mask and hard bias layers based on the thicknesses.
摘要:
A method and system for fabricating magnetic recording transducer are described. The magnetic recording transducer has a main pole including a plurality of sides, an intermediate layer adjacent to the sides of the main pole, and a field region distal from the main pole. The method and system include providing at least one trench in the intermediate layer. The trench(es) are between the main pole and the field region. The method and system also include providing a stop layer. A portion of the stop layer resides in at least part of the trench(es) and on at least part of the field region. The method and system also include removing a portion of the intermediate layer using a wet etch. The stop layer is resistant to removal by the wet etch. The method and system also include depositing a full wrap-around shield layer on the main pole.
摘要:
A method and system for providing a pole of magnetic transducer having an intermediate layer are described. The method and system include providing a trench in the intermediate layer and depositing a nonmagnetic liner. A portion of the nonmagnetic liner resides in the trench. At least one seed layer is deposited. A portion of the at least one seed layer resides in the trench. The method and system include depositing at least one main pole layer. The at least one main pole layer is magnetic. A portion of the main pole layer(s) reside in the trench. The method and system also include performing a first chemical mechanical planarization (CMP). An excess portion of the seed layer(s) external to the trench are removed through an ion beam etch. The method and system further include performing a second CMP to remove an excess portion of the nonmagnetic liner external to the trench.
摘要:
Embodiments of the present invention relate to reducing the size variation on a wafer fabrication. In some embodiments, at least a portion the backfill material over features larger than a threshold size is etched or milled to provide backfill protrusions over those features. The backfill protrusions are configured to reduce the size variation across the fabrication. Embodiments of the invention may be used in fabrication of many types of devices, such as tapered wave guides (TWG), near-field transducers (NFT), MEMS devices, EAMR optical devices, optical structures, bio-optical devices, micro-fluidic devices, and magnetic writers.