GLORIA

GEOMAR Library Ocean Research Information Access

X

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • AIP Publishing  (6)
  • 1
    Online Resource
    Online Resource
    Thermoacoustic analysis of solar cells by current modulation
    AIP Publishing ; 1996
    In:  Journal of Applied Physics Vol. 80, No. 8 ( 1996-10-15), p. 4685-4690
    Details
    In: Journal of Applied Physics, AIP Publishing, Vol. 80, No. 8 ( 1996-10-15), p. 4685-4690
    Abstract: The photoacoustic effect and a similar thermoacoustic effect with an alternating current (electroacoustic effect) are used to investigate the spatial distribution of heat sources in crystalline silicon solar cells. The use of a reference signal produced inside the same sample to normalize the acoustic signal allows background and photoacoustic cell effects to be reduced. The frequency dependence of these normalized measurements can be calculated analytically. Covering frequencies up to 10 kHz, the electroacoustic effect allows the nondestructive determination of diffusion lengths and recombination velocities at the interfaces. Volume and surface effects can thus be separated, which is useful for the analysis of high-efficiency solar cells.
    Type of Medium: Online Resource
    ISSN: 0021-8979 , 1089-7550
    URL: Article
    DOI: 10.1063/1.363452
    Language: English
    Publisher: AIP Publishing
    Publication Date: 1996
    detail.hit.zdb_id: 220641-9
    detail.hit.zdb_id: 3112-4
    detail.hit.zdb_id: 1476463-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 2
    Online Resource
    Online Resource
    Correlation between the volume change during crystallization and the thermal stability of supercooled liquids
    AIP Publishing ; 2003
    In:  Applied Physics Letters Vol. 83, No. 22 ( 2003-12-01), p. 4512-4514
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 83, No. 22 ( 2003-12-01), p. 4512-4514
    Abstract: We have measured the density of Pd40Ni40−xCuxP20 (x=0–40) alloys in the amorphous and crystalline states. For x & gt;30, the alloys are denser in the amorphous than in the crystalline states, which is contrary to the behavior of all known metallic glasses. For Pd40Ni40−xCuxP20 and all other bulk metallic glasses where density data are available in both the amorphous and crystalline states, we find a correlation between the stability of the supercooled liquids and the difference between the molar volumes of the glassy and crystalline phases. The supercooled liquid region is largest for those alloys that show no change in molar volume upon crystallization.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.1631056
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2003
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 3
    Online Resource
    Online Resource
    Stress development in thin yttrium films on hard substrates during hydrogen loading
    AIP Publishing ; 2003
    In:  Journal of Applied Physics Vol. 93, No. 11 ( 2003-06-01), p. 8958-8965
    Details
    In: Journal of Applied Physics, AIP Publishing, Vol. 93, No. 11 ( 2003-06-01), p. 8958-8965
    Abstract: Polycrystalline (0002)-textured yttrium (Y) films of 50–500 nm thickness on sapphire substrates were loaded electrolytically with hydrogen (H). The stresses which build up in these films were measured in situ using curvature measurements. The results are compared to the behavior of bulk Y–H. A linear elastic model is used to predict the behavior of clamped thin films. Basic properties of the bulk Y–H phase diagram and elastic constants resemble the measured values of the thin films. Compressive stress builds up during H-loading in the α-Y phase and in the (α-Y+β-YH2) two-phase field, showing an initial stress increase of −1.3 GPa per hydrogen concentration XH (compressive stress). While bulk Y–H samples are known to show a contraction in the β-YH2 phase during H loading, thin films show no evidence for such a contraction during the first loading cycle of the film. The stress remains constant in the bulk β-phase concentration range (ΔXH=0.1 H/Y). This is attributed to the narrow β-phase field (ΔXH=0.02 H/Y) of the thin film during the first loading. Only samples which have been kept at a hydrogen concentration of about 1.5 H/Y for weeks show tensile stress in the concentration range of the bulk β phase. Amazingly a stress increase of about +0.5 GPa/XH (tensile stress) is measured in the β+γ two-phase field. This is attributed to the smaller in-plane nearest-neighbor distance in the γ phase compared to the β phase. In the γ-phase field compressive stress is built up again, compensating the tensile stress. It increases by −1.3 GPa/XH. In total, the net stress in Y–H films remains comparably small. This could be a reason for the good mechanical stability of such Y–H switchable mirrors during H cycling.
    Type of Medium: Online Resource
    ISSN: 0021-8979 , 1089-7550
    URL: Article
    DOI: 10.1063/1.1568153
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2003
    detail.hit.zdb_id: 220641-9
    detail.hit.zdb_id: 3112-4
    detail.hit.zdb_id: 1476463-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 4
    Online Resource
    Online Resource
    Elastic and anelastic properties of Fe-doped InP films on silicon cantilevers
    AIP Publishing ; 2002
    In:  Journal of Applied Physics Vol. 91, No. 11 ( 2002-06-01), p. 9031-9038
    Details
    In: Journal of Applied Physics, AIP Publishing, Vol. 91, No. 11 ( 2002-06-01), p. 9031-9038
    Abstract: The effect of Fe doping on the elastic and anelastic properties of heteroepitaxial InP films on microfabricated silicon cantilevers has been investigated by the vibrating-reed technique (typical frequencies 100 Hz to 10 kHz) with strain amplitudes in the range of 10−6 to 10−3 and in the temperature interval from 113 to 508 K. A matter of particular interest has been the effect of iron doping on the motion and multiplication of dislocations which are known to restrict the application of the material for instance in optoelectronic devices. For this purpose, the amplitude dependence of damping as well as internal friction as a function of temperature, thermal treatment, and frequency have been investigated and are discussed in terms of the present knowledge about twins and dislocations in InP. In addition, Young’s modulus as well as film stress have been measured as a function of temperature, which permits an estimate of the thermal expansion coefficient.
    Type of Medium: Online Resource
    ISSN: 0021-8979 , 1089-7550
    URL: Article
    DOI: 10.1063/1.1471921
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2002
    detail.hit.zdb_id: 220641-9
    detail.hit.zdb_id: 3112-4
    detail.hit.zdb_id: 1476463-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 5
    Online Resource
    Online Resource
    Structure and magnetism of nanocrystalline and epitaxial (Mn,Zn,Fe)3O4 thin films
    AIP Publishing ; 2012
    In:  Journal of Applied Physics Vol. 111, No. 7 ( 2012-04-01)
    Details
    In: Journal of Applied Physics, AIP Publishing, Vol. 111, No. 7 ( 2012-04-01)
    Abstract: Nanocrystalline (NC) textured Mn0.5Zn0.6Fe1.9O4 (MZFO) films, grown at room temperature on both isostructural and non-isostructural substrates, show magnetization values significantly suppressed from epitaxial MZFO films. X-ray absorption spectroscopy and x-ray magnetic circular dichroism measurements indicate larger ratios of Fe3+ to Fe2+ ions on the tetrahedral sites in the NC films compared to the epitaxial films. The magnetization loops of the NC films are shifted by 200−400 Oe at low temperatures. No such effect is observed in the epitaxial films. We hypothesize that the presence of a more structurally disordered, possibly magnetically frustrated, matrix exchange biases the crystalline regions.
    Type of Medium: Online Resource
    ISSN: 0021-8979 , 1089-7550
    URL: Article
    DOI: 10.1063/1.3676619
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2012
    detail.hit.zdb_id: 220641-9
    detail.hit.zdb_id: 3112-4
    detail.hit.zdb_id: 1476463-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 6
    Online Resource
    Online Resource
    Vibrating reed apparatus with optical detection and digital signal processing: Application to measurements on thin films
    AIP Publishing ; 1999
    In:  Review of Scientific Instruments Vol. 70, No. 3 ( 1999-03-01), p. 1751-1755
    Details
    In: Review of Scientific Instruments, AIP Publishing, Vol. 70, No. 3 ( 1999-03-01), p. 1751-1755
    Abstract: We present an apparatus that permits quasisimultaneous measurements of several vibrating modes in a vibrating reed experiment. Position detection by laser beam deflection offers a simple setup and good sensitivity for higher modes of flexural as well as torsional vibrations. Frequency and damping from free decay data are determined by software which permits high accuracy, especially at low damping. This is particularly interesting for the measurement of the mechanical properties of thin films deposited on a low damping vibrating reed. As an example results on an Al film on a microstructurized silicon resonator are shown.
    Type of Medium: Online Resource
    ISSN: 0034-6748 , 1089-7623
    URL: Article
    DOI: 10.1063/1.1149663
    Language: English
    Publisher: AIP Publishing
    Publication Date: 1999
    detail.hit.zdb_id: 209865-9
    detail.hit.zdb_id: 1472905-2
    SSG: 11
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...