Showing papers in "Applied Physics Letters in 1962"
TL;DR: In this paper, the maximum field at which a superconductor maintains superconductivity is recognized as a parameter of the super-conductor, and an attempt is made to find a relation between maximum field and critical temperature.
Abstract: The maximum field at which a superconductor maintains superconductivity is recognized as a parameter of the superconductor, and an attempt is made to find a relation between maximum field and critical temperature. A rough proportionality is graphically displayed for Nb/sub 3/Sn, Nb- Zr, Nb- Ti, and Mo/ sub 3/Re. Emphasis is given to the effect of the magnetic fieid on the electron spin. (D.C.W.)
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131 citations
TL;DR: The thermoeiectric properties of an alloy of 88 at.% bismuth and 12 at.%. antimony in transverse magnetic fields up to 17,000 Ce are reported as discussed by the authors.
Abstract: The thermoeiectric properties of an alloy of 88 at.% bismuth and 12 at.% antimony in transverse magnetic fields up to 17,000 Ce are reported. Graphs of variation of resistivity with magnetic field strength and of variation of thermoelectric figure of merit with temperature show that resistivity rises with field strength. Magnetothermoelectric results with pure bismuth are similar to those for this alloy. (D.C.W.)
100 citations
94 citations
TL;DR: Some divalent europium compounds (EuS, EuSe and EuTe) are made by formerly used procedures, and their magnetic properties are examined and compared with EuO characteristics as discussed by the authors.
Abstract: Some divalent europium compounds (EuS, EuSe, EuTe) are made by formerly used procedures, and their magnetic properties are examined and compared with EuO characteristics. At 4.2 K, the sulfide and selenide are ferromagnetic and the telluride is paramagnetic. Graphs display various temperature and magnetic variations. (D.C.W.)
70 citations
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TL;DR: In this article, the authors determined the solubility of nickel in silicon by neutron activation analysis, showing that both nickel and copper have solubilities of the same order of magnitude in silicon.
Abstract: Difficult determination of the solubility of nickel in silicon is made by neutron activation analysis. Discs of p-type silicon are plated with nickel and irradiated. Activity of the Ni/sup 58/(n,p)Co/sup 58/ product is analyzed, showing that nickel and copper have solubility of the same order of magnitude in silicon. (D.C.W.)
TL;DR: In this paper, the mean penetration of an ion or atom from measurements of the sputtering yield of a solid target and of amounts of beam material collected in the target during irradiation is discussed.
Abstract: A way of deriving the mean penetration of an ion or atom from measurements of the sputtering yield of a solid target and of amounts of beam material collected in the target during irradiation is discussed. Theory is presented as are data from previous experiments, showing a pronounced reliance of steady-state quantlty of trapped material on the direction of irradiation during the collection of 45-kev Kr/sup +/ in monocrystalline Cu. (D.C.W.)
TL;DR: In this article, an explanation of the discrepancy between short sample tests and solenoid performance and prediction of the current carrying capacity of Nb-Zr solenoids are based on the mechanism of induced persistent-eddy currents.
Abstract: Explanation of the discrepancy between Nb -- Zr short sample tests and solenoid performance and prediction of the current carrying capacity of Nb -- Zr solenoids are based on the mechanism of induced persistent-eddy currents. Study of residual fields following reduction of magnetic field strength to zero leads to assumptions permitting calculations of circulating current magnitudes. Data are presented graphically, and generation of the same field using less material is found to result from spreading out layers or turns. (D.C.W.)
TL;DR: In this article, electron microscopy studies were performed to determine concentrations and mobilities of vacancies in graphite, and it was shown that quenched graphite had no loops even when bent or irradiated with neutrons.
Abstract: Electron microscope studies were undertaken to determine concentrations and mobilities of vacancies in graphite. Crystals were quenched and annealed to various temperatures. Crystals under strain (some deliberately bent) before heat treatment contained larger numbers of loops while crystals treated under strain- free conditions showed no loops. Crystals quenched from 3000 deg C showed no loops even when bent or irradiated with neutrons, indicating that loops are not produced by coalescing of excess quenchedin vacancies. (D.C.W.)