摘要:
A method for chemical mechanical polishing (CMP) wafers having high aspect ratio surface topography. A wafer is positioned on a plate. A polishing pad is coupled to a platen. A polishing solution (e.g., slurry) is added between the polishing pad and the wafer. CMP is performed on the wafer by creating a relative movement between the polishing pad and the wafer. The polishing pad removes substantially all residual material from the channels. To accomplish this, the polishing pad has a compressibility of at least 5% at a polishing pressure of about 4 psi.
摘要:
A solution of ammonium citrate and benzotriazole (BTA) is used to clean thin film magnetic head wafers. When used with brushing, the solution is a highly efficient process for removing particles, such as those generated during chemical-mechanical polishing (CMP), without causing corrosion and roughness. This process may be used on all CMP layers in thin film magnetic head wafer fabrication.
摘要:
A method of manufacture of magnetic heads which include CoFe elements using CMP is presented. The method includes providing a slurry of Al2O3, adjusting the concentration of H2O2 in said slurry to within a range of 6–12% by volume and balancing mechanical polishing action. The balancing is done by adjusting the table speed of a mechanical polisher to within a range of 55–90 rpm, and adjusting polishing pressure to within a range of 5–7 psi. Also a magnetic head having elements made of CoFe material made by this method is disclosed.
摘要翻译:提出了使用CMP制造包括CoFe元素的磁头的制造方法。 该方法包括提供Al 2 N 3 O 3的浆料,调节所述的二氧化钛的浓度 浆料在6-12体积%的范围内,并平衡机械抛光作用。 通过将机械抛光机的工作台速度调节到55-90rpm的范围内并且将抛光压力调节到5-7psi的范围内来进行平衡。 还公开了一种具有由该方法制成的由CoFe材料制成的元件的磁头。
摘要:
A Chemical Mechanical Polish (CMP) process and slurry therefore slurry that is capable of removing NiFe, SiO2, Photoresist, Ta, alumina and Cu at substantially the same rate. The slurry is useful for obtaining a substantially planar surface of several materials while avoiding corrosion of Cu coil and NiFe structure.
摘要:
A method for chemical mechanical polishing (CMP) wafers having high aspect ratio surface topography. A wafer is positioned on a plate. A polishing pad is coupled to a platen. A polishing solution (e.g., slurry) is added between the polishing pad and the wafer. CMP is performed on the wafer by creating a relative movement between the polishing pad and the wafer. The polishing pad removes substantially all residual material from the channels. To accomplish this, the polishing pad has a compressibility of at least 5% at a polishing pressure of about 4 psi.
摘要:
In one method and embodiment of the present invention, at least one coil layer is formed in a write head, using a two-slurry step of copper damascene chemical mechanical polishing method with a first slurry step removing the undesirable copper that is on top of the tantalum barrier layer and on top of the trenches and a second slurry step removing the remainder of the undesirable copper, the tantalum barrier layer, the silicon dioxide hard mask layer, the hard baked photoresist layer, the magnetic alloy such as NiFe, CoFe, or CoNiFe, and alumina insulating layer for better thin film magnetic head performances.
摘要:
In one method and embodiment of the present invention, at least one coil layer is formed in a write head, using a two-slurry step of copper damascene chemical mechanical polishing method with a first slurry step removing the undesirable copper that is on top of the tantalum barrier layer and on top of the trenches and a second slurry step removing the remainder of the undesirable copper, the tantalum barrier layer, the silicon dioxide hard mask layer, the hard baked photoresist layer, the magnetic alloy such as NiFe, CoFe, or CoNiFe, and alumina insulating layer for better thin film magnetic head performances.
摘要:
Systems and methods for aligning wafers within wafer processing equipment. In a first embodiment, a wafer alignment nozzle comprises a fixed cylindrical member. A moveable cylindrical member is disposed with the fixed cylindrical member in a sliding fit. The moveable cylindrical member comprises a plurality of angled fluid orifices for directing a plurality of streams of the fluid onto a surface of the wafer.
摘要:
Systems and methods for aligning wafers within wafer processing equipment. In a first embodiment, a wafer alignment nozzle comprises a fixed cylindrical member. A moveable cylindrical member is disposed with the fixed cylindrical member in a sliding fit. The moveable cylindrical member comprises a plurality of angled fluid orifices for directing a plurality of streams of the fluid onto a surface of the wafer.
摘要:
Systems and methods for aligning wafers. A first method provides for placing a wafer carrier comprising a mis-aligned wafer into an acceptance port. A wafer alignment fixture is moved relative to the wafer carrier and perpendicular to the plane of the mis-aligned wafer. The wafer alignment fixture comprises a spring action member. A force from said spring action member is exerted upon the mis-aligned wafer to achieve a desirable alignment of the mis-aligned wafer within the wafer carrier.