Fluctuation Diamagnetism of Aluminum and Aluminum Alloys Above the Superconducting Transition Temperature |
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Page 39
... diameter ) to ~ 0.4 . In Appendix B it is shown that a figure of merit for effectiveness of coupling into a SQUID is M / √ ̧ . From measurements of the sensitivity to magnetic field at the pickup coil , a value of 5.6x10-61 / 2 was ...
... diameter ) to ~ 0.4 . In Appendix B it is shown that a figure of merit for effectiveness of coupling into a SQUID is M / √ ̧ . From measurements of the sensitivity to magnetic field at the pickup coil , a value of 5.6x10-61 / 2 was ...
Page 68
... diameter , and finally swaged to a diameter of 3/8 " . Samples were made with impurity concentrations of 0.1 , 0.5 , and 0.8 at . % Si as well as .05 at . % Ag . The specific contents of other impurities are again not known for the ...
... diameter , and finally swaged to a diameter of 3/8 " . Samples were made with impurity concentrations of 0.1 , 0.5 , and 0.8 at . % Si as well as .05 at . % Ag . The specific contents of other impurities are again not known for the ...
Page 125
... diameter ratio : 1 = ( 금 ) 2 / - 5x103 ( cm ) 1/2 ( 2 / D ) P ( 3 ) where the function f has been plotted in Fig . 33. Here is the length , D the diameter of the coil . Since it turns out that f has a dependence for practical values of ...
... diameter ratio : 1 = ( 금 ) 2 / - 5x103 ( cm ) 1/2 ( 2 / D ) P ( 3 ) where the function f has been plotted in Fig . 33. Here is the length , D the diameter of the coil . Since it turns out that f has a dependence for practical values of ...
Common terms and phrases
Al-Si alloys amplitude apparatus applied field applied flux behavior bulk transition C₁ C₂ calculated calibration coherence length concentration configuration copper block coupling Curie constant curve diamagnetic diameter dirty end coils equation equilibrium experimental field dependence field H fluctuation effects fluctuation magnetization flux transformer free energy frequency function heater high fields high temperature homogeneous impurities indium inductance Johnson noise leads Lee and Payne limit lock-in amplifier low fields magnetic field magnetometer main magnet mean free path measurements microscopic theory noise nuclear paramagnetism nucleation observed obtained paramagnetism parameter pickup coil plotted polycrystal possible Prange predicted quenched ratio region resistance resistor S-N transition scaling field Schematic secondary coil sensitivity shielding current shown in Fig signal single crystal slow cool solute specimens SQUID SQUID hole superconducting superconducting shield superconducting transition supercooling tank circuit temperature dependence thermal thermometer transition temperature voltage wire zero