Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Studies on solution-grown thin films of ZnxCd1−xS (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 770-774 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Structural, optical, and electrical properties of thin films of ZnxCd1−xS (0≤x≤1.0) prepared by the solution-growth technique are reported as a function of x. As-grown films are composed of a hexagonal phase in the range 0≤x≤0.8 and of cubic phase for x=1.0. The lattice parameters a and c vary with x following Vegard's law. The band gaps for as-grown ZnxCd1−xS films are found to vary linearly with x from 2.40 eV for CdS to 3.6 eV for ZnS. The resistivity increases from 109 to 1012 Ω cm in the whole range 0≤x≤1.0. The effect of indium doping and H2 annealing on the above properties is also investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.340069
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Study of silver addition to Y1Ba2Cu3O7−y screen printed thick films (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 1575-1579 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A study of the effect on the superconducting and microstructural properties of YBa2Cu3O7−x screen printed thick films as a function of silver content (in the form of Ag and Ag2O) from 0 to 40 wt. % by employing different experimental techniques has been carried out. It has been found that silver improves the sinterability and intergrain connectivity and reduces the normal state resistivity. The superconducting transition temperature of the above films was found to be in the range of 82 to 91 K. Our results show that a small addition of silver (Ag or Ag2O) helps in enhancing the superconducting properties. However, large amounts lead to formation of 211 phase as the decomposed product and thereby deteriorate the quality of the superconductor. Silver has been found to remain as metal in the samples for the entire range. Further, in light of our results, it seems that an addition of Ag metal is more beneficial than the addition of Ag2O.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.349520
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Effect of WO3 doping on the properties of YBa2Cu3O7−x superconductor (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 371-375 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Tungsten-doped YBa2Cu3O7−x superconducting samples are characterized with the help of resistivity, crystal structural, microstructural, density d, and critical current density Jc studies for doping concentrations varying from 0.00 to 0.14 mol % of WO3. It has been found that doping of WO3 has hardly any influence of Tc, whereas it seems that d and Jc are affected. d and Jc of the samples increase in the range 0〈WO3≤0.04, but above this range, both start decreasing. The maximum Jc obtained at 77 K and zero magnetic field in YBa2Cu3O7−x doped with 0.04 mol % of WO3 is 450 A/cm2. The lower concentrations (〈0.04 mol %) seem to improve the density, whereas higher concentrations lead to porous structure and also induce the formation of BaCuO2 and Y2Ba1Cu1O5 nonsuperconducting phase as revealed by scanning electron microscopy, energy dispersive spectral, and x-ray diffraction analyses. The x-ray diffraction analysis also showed no appreciable change in the lattice parameters with WO3 doping. It appears that the WO3 doping changes the microstructure of YBa2Cu3O7−x to influence its Jc.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.345264
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Electron spin resonance and transmission electron microscopy studies of solution-grown CdTe thin films (1988)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 53 (1988), S. 865-867 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The electron spin resonance (ESR) and transmission electron microscopy (TEM) of as-grown and air heat treated CdTe thin films deposited by the solution growth method are studied. A single isotropic ESR absorption line at g=2.0002 attributed to Cd+ (I=0) is obtained on heating the films in air at and above 300 °C. Line intensity increases from 300 °C and reaches maximum at 500 °C beyond which it decreases. Electron diffraction studies of the as-grown CdTe films showed the presence of both the zinc blende and the wurtzite phases, whereas those of the films heated in air showed only the zinc blende phase but along with additional phases: TeO2 (observed at 300 °C) and CdTeO3 (observed at 550 °C).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.100097
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Bi-Sr-Ca-Cu-O superconductor with improved zero resistance temperature of 122 K (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 59 (1991), S. 3646-3648 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An improvement in zero resistance temperature (T0c) of the 2223 phase in the Bi-Sr-Ca-Cu-O system by using a nominal composition Bi0.8Pb0.2SrCa2Cu2Ox has been achieved. The bulk Bi0.8Pb0.2SrCaCu2Ox samples synthesized from a matrix reaction method exhibited a superconducting transition with T0c of 110 K. Addition of one Ca-atom per molecule of the above composition, that is, Bi0.8Pb0.2SrCa2Cu2Ox resulted in enhanced T0c of 122 K with onset temperature (Tonsetc) of 140 K. Interestingly, T0c of 122 K was also observed in the Pb-free BiSrCa2Cu2Ox samples, but it decreases to 115.5 K after 3–4 thermal cycles. However, no such decrease in T0c was observed in the Pb-doped samples, indicating the formation of stable 2223 phase. On the basis of x-ray diffraction, energy dispersive spectra and scanning electron microscopy data, it is concluded that excess of Ca facilitate the nucleation of 2223 phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.105607
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Fabrication and characterization of microwave sintered β′′-Al2O3 tubes (2000)
    Springer
    Journal of materials science 19 (2000), S. 1119-1121 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006738605323
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Physical and electrical properties of screen-printed Zn x Cd1−x thick films (1988)
    Springer
    Journal of materials science 23 (1988), S. 1064-1067 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Screen-printed thick films of Zn x Cd1−x S have been prepared in the entire composition range from pure CdS to pure ZnS and sintered at 800° C on alumina substrates. Their structural and electrical properties have been studied as a function ofx. X-ray diffraction analysis of Zn x Cd1−x S established the presence of wurtzite structure for the range 0 ≤x ≤ 0.8, whereas forx = 1.0 the presence of the sphalerite structure of ZnS is observed. The lattice parametersa andc vary withx in accordance with Vegard's law. Scanning electron micrographs reveal an enhancement in porosity with increasingx. The dark electrical resistivity of the film increases withx in the range 0 ≤x ≤ 0.6, but beyond this range it starts decreasing. Photoconductivity is studied as a function ofx. An effect of H2 annealing on the dark resistivity and photo-sensitivity is established.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01154013
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...