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  • 1
    Electronic Resource
    Electronic Resource
    Thermal expansion measurements of liquid metallic samples measured under microgravity conditions (1998)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 69 (1998), S. 2110-2113 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We report the method and first examples of thermal expansion measurements of liquid metallic samples measured under μg conditions. The experiments were performed in an electromagnetic levitation facility (TEMPUS facility) on board the space orbiter Columbia (mission MSL-1). The sample was imaged by a high-resolution CCD camera with on-board recording. After the mission the video tapes were analyzed by digital image processing. First measurements were made with a molten Pd78Cu6Si16 sample in the temperature range of about 800 to 1150 °C. The measured value of the coefficient of volume expansion is 8.9×10−5/°C in this temperature range. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1148906
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  • 2
    Electronic Resource
    Electronic Resource
    Ultrahigh vacuum scanning force microscope with fiber-optic deflection sensor (1996)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 2957-2959 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We built a scanning force microscope working in ultrahigh vacuum. The lever deflection is measured by a fiber-optic interferometer. To detect large lever deflections the distance between the fiber end and the cantilever backside is controllable by a piezoelectric device. With this technique force–distance curves can be acquired even over large distances. We implemented a stepper motor with gear reduction system for coarse approach in our microscope. First measurements of thin gold films grown on mica obtained in situ at 10−8 Pa are presented. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1147079
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  • 3
    Electronic Resource
    Electronic Resource
    Creation of nanometer-scale structures with the scanning tunneling microscope (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 5438-5440 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We used a scanning tunneling microscope to create nanoscale structures on Au surfaces by applying two kinds of voltage pulses. In the case of short rectangular pulses a sequence of identical pulses can lead to a number of different structures ranging from holes to hillocks. To separate the influence of the electric field and the current long triangular pulses have been applied under the condition of constant current. With this technique we are able to create either holes or hillocks, the material transport being from the positive to the negative electrode. We interpret our experiments as field evaporation of positive Au ions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.355701
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  • 4
    Electronic Resource
    Electronic Resource
    Thermal expansion measurements of glass-forming alloys in the melt and the undercooled state under microgravity conditions (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 75 (1999), S. 2220-2222 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We present measurements of the thermal expansion of the glass forming alloys Zr57Cu15.4Ni12.6Nb5Al10, Zr65Cu17.5Al7.5Ni10, Zr11Cu47Ti34Ni8, Zr60Cu18Al10Ni9Co3, Pd78Cu6Si16, and Pd82Si18 in the melt and the undercooled state in the TEMPUS facility under microgravity conditions. The samples were imaged with a high-resolution charge-coupled device-camera with on-board recording. After the mission, the video tapes were analyzed by digital image processing. The volume was found to be a linear function of temperature in the temperature range investigated. The thermal expansion coefficients in the melt and the undercooled state are between 5.5×10−5 and 7.9×10−5 K−1. The volume increment at the melting point was between 1% and 2.1%. Phase separations could be observed by a change of the slope of the volume versus temperature curve. The thermal expansion data can be interpreted qualitatively in terms of the free volume model. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.124970
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  • 5
    Electronic Resource
    Electronic Resource
    Measurement of nanohardness and nanoelasticity of thin gold films with scanning force microscope (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 77 (2000), S. 361-363 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: With a scanning force microscope operating in ultrahigh vacuum, we measured local mechanical properties of single crystalline gold islands. The elastic moduli of the gold islands and the substrates sapphire, mica, and quartz were evaluated from force-distance curves. The value of Young's elastic modulus in [111] direction of the gold grains is (50±16) GPa and was found to be significantly smaller than the bulk modulus of gold. With an indentation technique, the nanohardness of gold islands was investigated. The nanohardness is smaller than the bulk value and depends on the indentation area. This can be interpreted as nanohardening by dislocation interaction in very pure single crystals. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.126976
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  • 6
    Electronic Resource
    Electronic Resource
    The hysteresis of the critical current in superconducting tin whiskers (1988)
    Springer
    Journal of low temperature physics 70 (1988), S. 131-150 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Voltage-current characteristics are measured for fixed temperatures down to ∼0.5 K below the critical temperature. From a plot of the hysteretic behavior of the critical current as a function of the bath temperature, the temperature hysteresis for fixed current is evaluated and compared with theoretical predictions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00683248
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  • 7
    Electronic Resource
    Electronic Resource
    Phase-slip centers in superconducting whiskers of Pb with small concentrations of In and Bi (1990)
    Springer
    Journal of low temperature physics 79 (1990), S. 117-134 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The current-induced transition from the superconducting to the normal state in whiskers from Pb,Pb-In andPb-Bi has been investigated. Very close to the critical temperatureT c0 the voltage-current(V-I) characteristics show linear portions that are not separated by voltage jumps. For lower temperatures a voltage-step structure occurs. The temperature region over which the step structure extends is shifted towardsT c0 for decreasing mean free path l of the conduction electrons. The differential resistance of the first linear part of the characteristics in most cases does not depend on temperature like the related normal-like length that is proportional to l1/2 in agreement with the phase-slip model of Skocpol, Beasley, and Tinkham. Very close toT c0 the time-averaged supercurrent still flowing above the critical current is about the critical current itself. The shape and the characteristic properties of theV–I characteristics are compared with theoretical predictions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00692449
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  • 8
    Electronic Resource
    Electronic Resource
    Upper critical fields of chromium-rhenium alloys (1986)
    Springer
    The European physical journal 63 (1986), S. 179-184 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Alloys Cr1−x Re x in theirbcc α phase withx up to 0.31 have been studied through measurements of the upper critical magnetic fields, electrical resistivity and thermoelectric power. For this alloy system itinerant electron antiferromagnetism has recently been postulated to coexist with superconductivity. The critical field curvesB c2(T) measured down to 0.06 K may be adequately described by the theroetical results obtained by Werthamer et al. and by Maki for “normal” dirty superconductors. Hence there is no indication of magnetic order in these data. The influence of spin orbit scattering is found to increase with the Re concentration. The sign and temperature variation of the thermoelectric power measured up to 300 K gives evidence of a drastic change of the electronic structure of the alloys with increasing Re concentration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01309236
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  • 9
    Electronic Resource
    Electronic Resource
    Inverse AC-Josephson effect in superconducting in and Pb-whiskers (1989)
    Springer
    The European physical journal 77 (1989), S. 17-23 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract HF-radiation has been applied to In and Pb-whiskers by surrounding the sample by a superconducting loop. In both cases the voltage-current characteristics show steps of zero slope related to the frequency of the HF-field by the Josephson-relation, indicating the existence of phase-slip processes at Josephson frequency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01313614
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  • 10
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    Jahn-Teller reconstructed surface of the doped manganites shown by means of surface-enhanced Raman spectroscopy (2019)
    American Physical Society
    Details
    Publication Date: 2019-06-28
    Electronic ISSN: 2475-9953
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by American Physical Society
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