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Hf-sputtered indium oxide films doped with tin (1978)

Hoffmann, H. ; Pickl, J. ; Schmidt, M. ; [et al.]

Springer

Applied physics 16 (1978), S. 239-246

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ISSN: 1432-0630

Keywords: 72.40 ; 73

Source: Springer Online Journal Archives 1860-2000

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics

Notes: Abstract Indium oxide films doped with tin (ITO-films) have been hf-sputtered from an 80 at-%In2O3/20 at-%SnO2 target onto glass substrates. The sputter atmosphere contained mainly argon (10−2Torr) with addition of oxygen (0≦p O 2≦2·10−2Torr). The sputtered films aren-conductors. The conductivity and density of charge carriers depend on the oxygen content of the sputter gas. They could be varied by two orders of magnitude. In air or in oxygen atmosphere the films oxidize at the surface and for a certain depth beneath the surface, thus decreasing the conductivity. The Hall mobility of the sputtered films is smaller (≈10 cm2V−1 s−1) than one observes at ITO films produced by CVD sparaying or other methods. The conductivity of as sputtered films approached maximum values of about 1000Ώ−1cm−1.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00885119

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Kompressionsverhalten isotroper Pulvermischungen (1979)

Führer, C. ; Schmidt, M. A.

Springer

Pharmacy world & science 1 (1979), S. 1443-1450

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ISSN: 1573-739X

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology

Description / Table of Contents: Zusammenfassung Für die Kompressionsgleichung (s − a) (p + b) = C wurden die drei Hyperbelkonstanten a, b, und C interpretiert und ihre Abhängigkeit vom Mischungsverhältnis zweier Substanzen untersucht. Die Grö\e b wurde als Verformungsspannung bezeichnet, sie kann mit der Flie\grenze eines Materials in Beziehung gesetzt werden. In einer Tablettenrezeptur kann der Anteil an verformtem Arzneistoff mit Hilfe der Konstanten b abgeschätzt werden.

Notes: Abstract The three hyperbolic constants a, b and C were interpreted for the compression equation (s − a) (p + b) = C. Their dependence upon the mixture ratio of two substances was investigated. The quantity b was designated as deformation strain, it can be related to the yield point of a material. The proportion of deformed drug in a tablet formulation can be estimated by means of the constant b.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF02293483

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