Vicalloy was used because it required much more power to re-magnetize than the permaloy tape, so that the system would never come close to re-setting the permanent magnets while in use in the memory system.
2.
Magnetic tape was first used to record computer data in 1951 on the Eckert-Mauchly UNIVAC I . The recording medium was a thin strip of one half inch ( 12.65 mm ) wide metal, consisting of nickel-plated bronze ( called Vicalloy ).
3.
'Vicalloy'was used in hysteresis motors both in solid and laminated form ( for higher frequency applications ) by Vactric Ltd, and Walter Jones Ltd,-neither company still exist-using material produced and processed by Telcon Ltd, Crawley, UK,-now owned by Carpenter from about 2008 .'Electrical Times', UK, published an article'Magnetic Alloys for Hysteresis Motors'by D . R . Driver on 10 August 1967 which includes some magnetic charicteristics of Vically and P6 alloy.
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