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  • 1
    Electronic Resource
    Electronic Resource
    SQUID holder with high magnetic shielding (1990)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 61 (1990), S. 834-838 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We discuss a SQUID holder designed for high magnetic shielding. We show how to estimate the attenuation of the magnetic field from the normal magnetic modes for an approximate geometry. The estimate agrees satisfactorily with the attenuation measured with a commercial rf SQUID installed in the holder. The holder attenuates external magnetic fields by more than 109 at the SQUID input. With the SQUID input shorted, the response to external fields is 10−5 Φ0/G.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1141503
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  • 2
    Electronic Resource
    Electronic Resource
    Testing the renormalisation group theory of cooperative transitions at the lambda point of helium
    Amsterdam : Elsevier
    Nuclear Physics B (Proceedings Supplements) 5 (1988), S. 31-35 
    Details
    ISSN: 0920-5632
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0920-5632(88)90008-4
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Magnetic heat conductance between CMN single crystals and liquid3He (1986)
    Springer
    Journal of low temperature physics 63 (1986), S. 401-421 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Measurements of the magnetic Kapitza resistance between single crystals of CMN and lanthanum-diluted CMN in contact with ultrapure liquid3He are presented. The investigations were performed in the temperature range 2–100 mK and in magnetic fields up to 600 Oe. For the first time, a magnetic thermal coupling between bulk crystals with dimensions of up to 3 mm and liquid3He was observed. In the case of pure CMN and liquid3He below 7 mK, the relationR ∞ T n withn=4±1 is seen. A strong dependence ofR with magnetic field and Ce3+ content is found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00681489
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Magnetic field effects in thick proximity-induced superconductors (1987)
    Springer
    Journal of low temperature physics 66 (1987), S. 41-54 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Low-field magnetic screening and breakdown fields have been measured in thick proximity-induced superconducting copper by means of dc magnetization and ac susceptibility in the temperature range 10 to 0.005 K. From the thickness and temperature dependence of the breakdown field the Cooper pair penetration depth in copper is obtained. This value isK N −1 =0.6/T μm, withT in kelvins. No saturation effects were observed in the screening length ρ, the breakdown fieldH b, or the supercooled fieldH sc down to the lowest temperatures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00681466
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  • 5
    Electronic Resource
    Electronic Resource
    A high-sensitivity paramagnetic salt second-sound detector (1988)
    Springer
    Journal of low temperature physics 73 (1988), S. 161-170 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We describe a second sound detector based on the observation of temperature-dependent magnetization changes in paramagnetic materials. The sensitive element consists of a small pill of powdered paramagnetic salt placed in a region of high magnetic field and surrounded by a superconducting pickup loop connected to a SQUID magnetometer. At 10 Hz, the ac sensitivity was estimated to be 3×10−9 K/√Hz, increasing to 1×10−10 K/√Hz for dc signals. The device is particularly useful for experiments near the lambda point, which can be approached much more closely than with superleak transducers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00681748
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    Paper (German National Licenses)
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