NDLI: Propagation of cylindrical magnetic domains in orthoferrites

Content Provider	IEEE Xplore Digital Library
Author	Perneski, A.
Copyright Year	1965
Abstract	Bits of information, represented by cylindrical magnetic domains in a thin platelet of orthoferrite magnetized normal to the platelet, can be propagated by applying a rotating uniform transverse magnetic field to magnetize a structured soft magnetic overlay placed in the same plane as the orthoferrite. Typically, the orthoferrite platelets are 2 mils thick and the domains are 1 to 2 mils in diameter. The structured overlay can be an etched pattern of 1- by 5-mil 5000-Å-thick evaporated Permalloy rectangles, requiring transverse fields on the order of 10 Oe. A bit packing density between 10⁴and 10⁵bits/in²can be achieved using 1-mil domains and a bit rate of 1 MHz is believed possible. Because of the structural simplicity of devices using propagating cylindrical domains driven by uniform fields, they are economically attractive. Another feature is that logic can be performed within the device by utilizing the interaction between domains.
Sponsorship	IEEE Magnetics Society
Starting Page	554
Ending Page	557
Page Count	4
File Size	515837
File Format	PDF
ISSN	00189464
Volume Number	5
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1969-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic domains Soft magnetic materials Saturation magnetization Stability Magnetic materials Magnetic fields Logic devices Conductors Etching Bit rate
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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