Method for making multilayer magnetic components
AssigneeAT&T Bell Laboratories
InventorsDebra A. Fleming, David W. Johnson, Jr., Warren W. Rhodes, Apurba Roy, John Thomson, Jr.
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Abstract
Multilayer magnetic components can be made with reduced cracking and magnetic degradation by forming layers having patterns of magnetic and insulating regions separated by regions that are removable during sintering. Advantageously, when the layers are stacked, layers of removable material are also disposed between magnetic regions and insulating regions so as to produce upon sintering a magnetic core within an insulating body wherein the core is substantially completely surrounded by a thin layer of free space.
Claims7
In the method of making a magnetic device comprising the steps of forming a plurality of layers comprising one or more insulating regions and one or more magnetic regions, forming a stack of said layers, laminating said stack and sintering the laminated stack, the improvement wherein:
- at least one layer of said plurality comprises a region of removable material for dissipating prior to completion of sintering disposed between said insulating regions and said magnetic regions thereby separating said insulating and magnetic regions.
Dependencies are inferred from the claim text.