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Now showing items 1-10 of 67

#### A Comparison Between Square-Loop Metals and Ferrites for High-Speed Pulsed Operation

(Lincoln Laboratory - Division 6, 1954-02-04)

Metals and ferrites with rectangular hysteresis loops are used in magnetic amplifiers, switching networks, and data-storage systems. In these applications, the large-signal pulse response is most important. To reduce the ...

#### Stress Effects in Ferrites and Generalization of Switching Coefficient for Non-square Materials

(Lincoln Laboratory - Division 6, 1954-01-06)

The hysteresis-loop squareness R[subscript s], the switching coefficient S[subscript W], and the threshold field H[subscript o] of a nickel-zinc ferrite are found to increase upon application of a compressive stress. The ...

#### Effects of Tape Thickness and Temperature on Flux Reversal of 4-79 Molybdenum-Permalloy

(Lincoln Laboratory - Division 6, 1954-05-03)

Measurements of the flux reversal time t have been made for 1/8-mil, 1/4-mil, 1/2-mil, and 1-mil 4-79 Molybdenum-Permalloy tape cores as a function of the applied field. These measurements were taken at seven different ...

#### Group 63 Seminar on Magnetism, XLVII

(MIT Digital Computer Laboratory, 1953-04-07)

This memo is a summary of a Group 63 seminar on magnetism. Topics include the spinel structure of ferrites, basic crystal structures, and axes of symmetry.

#### Group 63 Seminar on Magnetism, XXXVIII

(MIT Digital Computer Laboratory, 1953-03-16)

This memo is a summary of a Group 63 seminar on magnetism. Topics include the phenomenon of superexchange, Hund's rule, the exchange effect, ferrites, and ferrimagnetism.

#### Group 63 Seminar on Magnetism, X

(MIT Digital Computer Laboratory, 1952-11-19)

This memo is a summary of a Group 63 seminar on magnetism. Topics include the harmonic oscillator, the case of boundary wall energy as a function of displacement, the motion of a body under friction, the resonance frequency ...

#### Group 63 Seminar on Magnetism V

(MIT Digital Computer Laboratory, 1952-10-28)

This memo is a summary of a Group 63 seminar on magnetism. Topics include Langevin's theory of paramagnetism and some general paramagnetic properties.

#### Group 63 Seminar on Magnetism, XXXVII

(MIT Digital Computer Laboratory, 1953-03-13)

This memo is a summary of a Group 63 seminar on magnetism. Topics include the electrical conductivity and ferromagnetism.

#### Group 63 Seminar on Magnetism, LI

(MIT Digital Computer Laboratory, 1953-05-06)

This memo is a summary of a Group 63 seminar on magnetism. Topics include the magnetic characteristics of ferrites in the neighborhood of the Curie temperature.

#### Group 63 Seminar on Magnetism VII

(MIT Digital Computer Laboratory, 1952-10-27)

This memo is a summary of a Group 63 seminar on magnetism. Topics include Weiss' notion of the internal field, magnetic domains, domain theory, domain growth, and domain rotation.