By Topic

Soniscan: A ferroacoustic thin-film memory

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Rubinstein, Harvey ; Sylvania Electronic Systems, Waltham, Mass. ; Hornreich, R.M. ; Teixeira, J. ; Cohler, Edmund U.

The Soniscan ferroacoustic memory is a new all-electronic mass storage system which utilizes a propagating sonic pulse to access a batch-fabricated film storage medium. The storage element consists of two magnetostrictive film layers with a conductor sandwiched between them. They are deposited on a thin glass substrate and etched into a suitable pattern. A piezoelectric transducer is bonded to one edge of the substrate. The switching behavior of the magnetic storage element is described by a modified Stoner-Wohlfarth model and the sonic wave generation and propagation by a one-dimensional transmission-line analog. The fabrication and operation of the storage elements are discussed. The design of a 107bit memory system is presented. A 2048-bit experimental model of a Soniscan memory has been constructed. It has an access time of less than 2μs, a data rate of 7 Mbit/s/line, and a storage density of 4000 bit/in2A Soniscan bulk store will be relatively inexpensive, since memory planes are batch fabricated; a single electronic unit, the transducer driver switch, half-selects tens of thousands of bits during reading and writing; and sense and recording electronics are shared among many planes by the series stringing of write-sense lines. It is expected that Soniscan will present an attractive alternative to electromechanical units in many applications.

Published in:

Magnetics, IEEE Transactions on  (Volume:6 ,  Issue: 3 )