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Amorphous Magnetic Bubble Domain Materials

IP.com Disclosure Number: IPCOM000081736D
Original Publication Date: 1974-Jul-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Klokholm, E: AUTHOR [+2]

Abstract

Various alloys, such as Ni-Si, Fe-Si, and Cu-Si, are proposed as new materials for submicron size bubble domain applications. All of these alloys are ferromagnetic and the magnetic moment can be adjusted to the proper value of 4 Pi M(s) by the Si addition. The maximum Si content before the alloys become nonmagnetic is 28 atomic percent for Ni, and 50 atomic percent for Fe and Co.

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Amorphous Magnetic Bubble Domain Materials

Various alloys, such as Ni-Si, Fe-Si, and Cu-Si, are proposed as new materials for submicron size bubble domain applications. All of these alloys are ferromagnetic and the magnetic moment can be adjusted to the proper value of 4 Pi M(s) by the Si addition. The maximum Si content before the alloys become nonmagnetic is 28 atomic percent for Ni, and 50 atomic percent for Fe and Co.

These alloys can be deposited in the amorphous phase by evaporation or sputtering onto substrates maintained at room temperature. They have the advantages of being inexpensive and resistant to corrosion and oxidation.

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