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  • 1
    Electronic Resource
    Electronic Resource
    A New Mechanism of Nonstoichiometric 1:1 Short-Range Ordering in NiO-Doped Pb(Mg1/3Nb2/3)O3 Relaxor Ferroelectrics (1998)
    Westerville, Ohio : American Ceramics Society
    Journal of the American Ceramic Society 81 (1998), S. 0 
    Details
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The oxidation of ruthenium using rapid thermal processing (RTP) was investigated by thermogravimetric analysis. Ruthenium single-crystal particles with 10 µm diameter were used in the present study. The result showed that the early stage of RTP was controlled primarily by the oxygen diffusion process through the RuO2 reacted layer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1151-2916.1998.tb02665.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Molecular-Dynamics Analysis of the Structural Properties of Silica during Cooling (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 139 (Apr. 2008), p. 101-106 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: The structural properties of SiO2 liquid during cooling have been investigated bymolecular dynamics simulations. The interatomic forces acting on the particles are calculated by themodified Tersoff potential parameters. The glass transition temperature and structural properties ofthe resulting SiO2 system at various temperatures have been investigated. The fivefoldcoordinations of Si and threefold coordinations of O atoms were observed, and the coordinationdefects of system decrease with decreasing temperature up to 17 % at 300 K. The self-diffusioncoefficients for Si and O atoms drop to almost zero below 3000 K. The structures were distorted athigh temperatures, but very stable atomic network persisted up to high temperature in the liquidstate
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.139.101.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    1 : 2 Long-range ordering and defect mechanism of WO3-doped perovskite Ba(Mg1/3Ta2/3)O3 (2000)
    Springer
    Journal of materials science 35 (2000), S. 4885-4893 
    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 The nature of the B-site cation ordering and the associated defect process necessary to stabilize the ordered domains were investigated using the WO3-doped Ba〈Mg1/3Ta2/3〉O3 〈BMT〉 system as a typical example of Ba〈B′1/3B″2/3〉O3-type complex perovskites. It was shown that only the 1 : 2 long-range ordering of the B-site cation existed in both undoped and WO3-doped BMT perovskites. The atomic defect mechanism associated with the stoichiometric 1 : 2 long-range ordering was systematically investigated. It is concluded that the substitution of W6+ for Ta5+ in the WO3-doped BMT enhances the degree of the 1 : 2 long-range ordering and produces the positively charged W Ta ⋅ sites with a concomitant generation of tantalum vacancies 〈VTa″″′〉 and mobile oxygen vacancies 〈V⋅⋅ O〉 for the ionic charge compensation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004861821045
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    Paper (German National Licenses)
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