Low-Temperature Recovery of Magnetic After-Effect and Electrical Resistivity of Electron-Irradiated Nickel

The low-temperature recovery of the electrical resistivity increment Δρ0 produced by deformation of polycrystalline Zr at 4.2 °K was investigated. Particular attention was given to the large recovery stage occurring between 30° and 40 °K, which amounted to 30% of Δρ0 for Zr containing ~0.070 at. % oxygen, but only 6% of Δρ0 for Zr containing ~0.015 at. % oxygen. By means of isochronal and isothermal anneals, this recovery stage was shown to be due to several first-order annealing processes (with activation energies between 0.105 and 0.125 eV), which were attributed to defect-oxygen atom interactions. Additional recovery peaks were observed at 190 °K and 310 °K only for the lower purity Zr, whose recovery to 360 °K was approximately 80%.

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Recovery of electron-irradiated zirconium at low temperatures

Canadian Journal of Physics ◽

10.1139/p68-047 ◽

1968 ◽

Vol 46 (5) ◽

pp. 321-324 ◽

Cited By ~ 19

Author(s):

H. H. Neely

Keyword(s):

Electrical Resistivity ◽

Low Temperature ◽

Electron Irradiation ◽

Low Temperatures ◽

Stage I ◽

Resistivity Change ◽

Low Oxygen ◽

Defect Migration ◽

Pair Annihilation ◽

Temperature Recovery

The low-temperature recovery of the electrical resistivity of polycrystalline zirconium was measured after electron irradiation below 8 °K. The material used in this irradiation was the same low oxygen material (0.015 at.%) used by Swanson to study recovery after deformation at 4.2 °K. Substage IB was found to be only of the order of 4% of the irradiation-induced resistivity change, compared to ~6% observed by Swanson after deformation. Stage I (4.2 to 160 °K) in Zr contains six substages, while stage II (160 to 310 °K) contains only one substage after electron irradiation. While no study of kinetics was made, it seems likely that close pair-annihilation processes are responsible for the recovery spectrum below 118 °K and that longer-range defect migration occurs in the neighborhood of 140 °K.

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EXPERIMENTS TO TEST « PARAMAGNON THEORIES » : ELECTRICAL RESISTIVITY, LOW TEMPERATURE SPECIFIC HEAT AND MAGNETIZATION MEASUREMENTS ON Ni3Al AND Ni3Ga REVIEWED

Le Journal de Physique Colloques ◽

10.1051/jphyscol:19711356 ◽

1971 ◽

Vol 32 (C1) ◽

pp. C1-999-C1-1001 ◽

Cited By ~ 1

Author(s):

P. F. De CHATEL ◽

F. R. De BOER ◽

W. De DOOD ◽

J. H. J. FLUITMAN ◽

C. J. SCHINKEL

Keyword(s):

Electrical Resistivity ◽

Low Temperature ◽

Specific Heat ◽

Magnetization Measurements ◽

Low Temperature Specific Heat

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EVANOHM

Alloy Digest ◽

10.31399/asm.ad.ni0057 ◽

1960 ◽

Vol 9 (4) ◽

Keyword(s):

Electrical Resistivity ◽

Low Temperature ◽

Physical Properties ◽

Tensile Properties ◽

Temperature Coefficient ◽

Base Alloy ◽

Nickel Base Alloy ◽

Temperature Coefficient Of Resistance ◽

High Electrical Resistivity ◽

Nickel Base

Abstract EVANOHM is a nickel-base alloy having low temperature coefficient of resistance and high electrical resistivity. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on joining. Filing Code: Ni-57. Producer or source: Wilbur B. Driver Company.

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