Knuth Albertsen
Philips
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Publication
Featured researches published by Knuth Albertsen.
Journal of Electroceramics | 1998
Knuth Albertsen; Detlev Dr. Hennings; Oliver Steigelmann
BaTiO3 ceramics containing Mn acceptors and various Mo, W and Nb donor dopants have been fired in reducing atmosphere and re-oxidized in N2/O2. In single Mn-doped ceramics, Mn2+ is completely oxidized to Mn3+; in N2 containing 50 ppm O2 at T > 800°C. Changes of the Curie point and sample length under reduction and re-oxidation have been detected using dielectric and thermomechanical measurements. Charge compensation and complex formation between acceptors and donors have been observed. In donor-acceptor charge complexes, Mn2+ cannot be oxidized.
Journal of the American Ceramic Society | 2001
Christof Metzmacher; Knuth Albertsen
Journal of the American Ceramic Society | 2003
Mathew R. Opitz; Knuth Albertsen; James J. Beeson; Detlev Hennings; J.L. Routbort; Clive A. Randall
Archive | 1996
Dieter Mateika; Petra Huppertz; Knuth Albertsen; Oliver Steigelmann
Archive | 2004
Ronald Mikkenie; Gerardus Christiaan Marie Dortant; Knuth Albertsen; Heinz Georg Kohler; Tilman Schlenker
Archive | 2000
Knuth Albertsen; Wilhelm-Albert Groen; Tilman Schlenker
Archive | 2002
Wilhelm Albert Groen; Knuth Albertsen; Bernd Rausenberger
Archive | 2001
Wilhelm Albert Groen; Petra Huppertz; Knuth Albertsen; Bernd Rausenberger
Archive | 2001
Knuth Albertsen; C. Gerardus Dortant; G. Heinz Kohler; Ronald Mikkenie; Tilman Schlenker
Archive | 2000
Knuth Albertsen; Wilhelm-Albert Groen; Tilman Schlenker
