. The Bell System technical journal . 1 / y / / 1 y z y y 1 1 / y y 1, / ^y y J, y. ^ 1 /A y 0 4 .8 1.2 1.6 20 24 2.8 32 3£ 40H A r ■ y y / A b ^ y / ^ iy / 1 ^ / A y . A ^ ^] / -a y -^ / 1 / / f / / 1 1 7 / / / / J t / // , y v / / 7 ^ ^ / /^ ■^ 0 4 .8 1.2 1.6 2.0 24 2.8 3.2H 16000 12000 0 1 2 3 4 5 H B 8000 4000 A ^ =s= — ^ ■— /? ^ ^ ^ •^ / A ^ y ,i y / 1 i A / 16 20 24 Fig. 7—Upper halves of hysteresis loops for Perminvar (45% Ni—25% Co—30% Fe)A—air quenched, B—baked at 425° C. tudes of the hysteresis losses and the shapes of the hysteresis loops.For the air quenched rings the sha

. The Bell System technical journal . 1 / y / / 1 y z y y 1 1 / y y 1, / ^y y J, y. ^ 1 /A y 0 4 .8 1.2 1.6 20 24 2.8 32 3£ 40H A r ■ y y / A b ^ y / ^ iy / 1 ^ / A y . A ^ ^] / -a  y -^ / 1 /  / f  / /  1 1 7 / / / / J t / // , y v / / 7 ^ ^ / /^ ■^ 0 4 .8 1.2 1.6 2.0 24 2.8 3.2H 16000 12000 0 1 2 3 4 5 H B 8000 4000 A ^ =s= — ^ ■— /? ^ ^ ^ •^ / A ^ y ,i y / 1 i  A / 16 20 24 Fig. 7—Upper halves of hysteresis loops for Perminvar (45% Ni—25% Co—30% Fe)A—air quenched, B—baked at 425° C. tudes of the hysteresis losses and the shapes of the hysteresis loops.For the air quenched rings the sha Stock Photo
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Reading Room 2020 / Alamy Stock Photo

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2CRW958

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7.1 MB (148.4 KB Compressed download)

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1853 x 1348 px | 31.4 x 22.8 cm | 12.4 x 9 inches | 150dpi

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. The Bell System technical journal . 1 / y / / 1 y z y y 1 1 / y y 1, / ^y y J, y. ^ 1 /A y 0 4 .8 1.2 1.6 20 24 2.8 32 3£ 40H A r ■ y y / A b ^ y / ^ iy / 1 ^ / A y . A ^ ^] / -a y -^ / 1 / / f / / 1 1 7 / / / / J t / // , y v / / 7 ^ ^ / /^ ■^ 0 4 .8 1.2 1.6 2.0 24 2.8 3.2H 16000 12000 0 1 2 3 4 5 H B 8000 4000 A ^ =s= — ^ ■— /? ^ ^ ^ •^ / A ^ y , i y / 1 i A / 16 20 24 Fig. 7—Upper halves of hysteresis loops for Perminvar (45% Ni—25% Co—30% Fe)A—air quenched, B—baked at 425° C. tudes of the hysteresis losses and the shapes of the hysteresis loops.For the air quenched rings the shapes of the loops for the differentflux densities resemble those for ordinary magnetic materials althougha few of them show traces of the perminvar characteristics. If a 32 BELL SYSTEM TECHNICAL JOURNAL n / / o / o / o / (VJ / o o / ro 1 OO / ^ V o / / oo in CD v^_ 7 < oo oo oo o (-1 oo AinieV3l^d3d doQ: 1- ] CO a. X1-1 J / / o X O o o lO (0 •o o- o CD lOQ: hi V . o u ^ CO 5a. 0) 0 ^ 1 ^ 0). MAGNETIC PROPERTIES OF PERMINVAR 33 more rapid cooling rate had been used these characteristics no doubtwould have disappeared completely. The hysteresis loops all haveconsiderable areas. The one for 568 gauss, the lowest flux densitymeasured, represents an energy loss of 18.7 ergs per centimeter cube.For the same flux density, the hysteresis loops for the annealed andthe baked rings have no measurable areas, the ascending and de-scending branches of the loops falling on the straight lines shown in 100-,

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