Crystalline magnetic layer to amorphous substrate bonding
AssigneeSeagate Technology LLC
InventorsMark Anthony Gubbins, Marcus Benedict Mooney
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Abstract
Various methods for attaching a crystalline write pole onto an amorphous substrate and the resulting structures are described in detail herein. Further, the resulting structure may have a magnetic moment exceeding 2.4 Tesla. Still further, methods for depositing an epitaxial crystalline write pole on a crystalline seed or template material to ensure that the phase of the write pole is consistent with the high moment phase of the template material are also described in detail herein.
Claims17
A method of manufacturing an article, the method comprising:
- attaching one or more epitaxial crystalline layers to an amorphous substrate by:
- bonding a nonmagnetic crystalline template layer to the amorphous substrate;
- patterning trenches in the nonmagnetic crystalline template layer bonded to the amorphous substrate;
- and
- depositing additional nonmagnetic crystalline template material within the patterned trenches and over the nonmagnetic crystalline template, prior to depositing a magnetic epitaxial crystalline layer on the nonmagnetic crystalline template layer, wherein the magnetic moment of the article is greater than 2.4 Tesla.
A method of manufacturing an article, the method comprising:
- attaching a nonmagnetic crystalline template layer comprising gallium arsenide directly to the amorphous substrate;
- and
- depositing a magnetic epitaxial crystalline layer on the nonmagnetic crystalline template layer, wherein the magnetic moment of the article is greater than 2.4 Tesla.
A method of manufacturing an article, the method comprising:
- providing a template wafer comprising a crystalline magnetic epitaxial layer and a template crystalline substrate;
- patterning the crystalline magnetic epitaxial layer into individual islands of crystalline magnetic material;
- removing the individual islands of crystalline magnetic material from the template crystalline substrate;
- and
- bonding the removed individual islands of crystalline magnetic material to an amorphous substrate.
Dependencies are inferred from the claim text.