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  • 1
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    Magnetic hysteresis up to 80 kelvin in a dysprosium metallocene single-molecule magnet (2018)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2018-12-21
    Description: Single-molecule magnets (SMMs) containing only one metal center may represent the lower size limit for molecule-based magnetic information storage materials. Their current drawback is that all SMMs require liquid-helium cooling to show magnetic memory effects. We now report a chemical strategy to access the dysprosium metallocene cation [(Cp i Pr5 )Dy(Cp*)] + (Cp i Pr5 , penta-iso-propylcyclopentadienyl; Cp *, pentamethylcyclopentadienyl), which displays magnetic hysteresis above liquid-nitrogen temperatures. An effective energy barrier to reversal of the magnetization of U eff = 1541 wave number is also measured. The magnetic blocking temperature of T B = 80 kelvin for this cation overcomes an essential barrier toward the development of nanomagnet devices that function at practical temperatures.
    Keywords: Chemistry
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
    Electronic Resource
    Electronic Resource
    An NRD-fed dielectric rod antenna for the short millimeter wave band (1989)
    Springer
    International journal of infrared and millimeter waves 10 (1989), S. 1327-1337 
    Details
    ISSN: 1572-9559
    Keywords: Dielectric Antenna ; NRD guide ; polar diagram ; Millimeter Wave
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A simple E-plane tapered rectangular dielectric rod fed by NRD guide is used as a millimeter wave antenna. This class of aerial features attractive radiation patterns with relatively low sidelobes and moderate gain. The measured results show that such an antenna and mounting structure can be exploited as effective radiating element in the short millimeter wave frequency band.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01009257
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    An NRD fed dielectric rod antenna for the short millimeter wave band (1989)
    Springer
    International journal of infrared and millimeter waves 10 (1989), S. 1153-1163 
    Details
    ISSN: 1572-9559
    Keywords: Dielectric Antenna ; NRD guide ; polar diagram ; Millimeter Wave
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A simple E-plane tapered rectangular dielectric rod fed by NRD guide is used as a millimeter wave antenna. This class of aerial features attractive radiation patterns with relatively low sidelobes and moderate gain. The measured results show that such an antenna and mounting structure can be exploited as effective radiating element in the short millimeter wave frequency band.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01010373
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Concentration multiplicity in a draft tube fluidized-bed bioreactor involving two limiting substrates (1988)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 31 (1988), S. 24-34 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Concentration multiplicity in a two-phase or three-phase draft tube fluidized-bed bioreactor containing biofloc particles is studied. The kinetics of biological reactions considered involve two limiting substrates. The necessary and sufficient conditions for concentration multiplicity in both the biofilm and bioreactor are examined in terms of effectiveness factor, inlet and bulk concentration of substrates, and liquid flow rate. Hysteresis behavior in both the biofilm and bioreactor and multiplicity of concentration profiles in the biofilm are also discussed.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260310105
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