Sonic-film memory

Shahbender, R.; Herkart, P.; Karstad, K.; Kurlansik, H.; Onyshkevych, L.

doi:10.1109/tmag.1969.1066543

IEEE Trans. Magn.

1969

DOI: 10.1109/tmag.1969.1066543

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Sonic-film memory

R. Shahbender

P. Herkart

K. Karstad

et al.

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1972

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Strain Sensitivity of Mn-Doped Films

Onyshkevych

1970

Journal of Applied Physics

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Mn-doped films, prepared by vacuum evaporation from melts containing approximately 57% Ni, 38% Fe, plus 5% Mn are found to possess the following properties: uniaxial anisotropy with a mean value of Hk=3.7 Oe; a magnetostriction constant λ with a mean value of 75×10−6; large rotation of the easy axis with applied stress; and magnetization M similar to that of Permalloy. These films are eminently suitable for use in the Sonic Film Memory. They display a figure of merit which is statistically a factor of 6 smaller (better) than that for Ni–Fe and Ni–Fe–Co films. Normal evaporation methods induce oriented strains on the order of 10−5 as a result of nonuniform heating of the substrates to the deposition temperature of 300°C. At this level of strain the highly strain-sensitive Mn films display excessive skew and dispersion. Special, thermally stabilized fabrication facilities have to be used to minimize this problem.

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Strain Sensitivity of Mn-Doped Films

Onyshkevych

1970

Journal of Applied Physics

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Strain Gauges for the Measurement of Strain Waves on the Surface of Fused Quartz

Barasch

1970

IEEE Trans. Son. Ultrason.

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Soniscan: A ferroacoustic thin-film memory

et al. 1970

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Sonic-film memory

Cited by 5 publications

References 1 publication

Strain Sensitivity of Mn-Doped Films

Strain Sensitivity of Mn-Doped Films

Strain Gauges for the Measurement of Strain Waves on the Surface of Fused Quartz

Soniscan: A ferroacoustic thin-film memory

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