Zobrazeno 1 - 10
of 122
pro vyhledávání: '"Adalbert Feltz"'
Autor:
Adalbert Feltz
Publikováno v:
Zeitschrift für Chemie. 4:41-49
Publikováno v:
Zeitschrift für Chemie. 20:81-89
Autor:
Adalbert Feltz, Siegfried Schmalfuß
Publikováno v:
Zeitschrift für Chemie. 15:289-291
Autor:
Walter Pölzl, Adalbert Feltz
Publikováno v:
Journal of the European Ceramic Society. 20:2353-2366
The thermal stability and aging of spinels of the system Fe 2 O 3 –NiO–Mn-oxide are studied by measuring the electrical properties of ceramic samples obtained by sintering up to 1350°C. Based on the formula Fe III x Ni II y Mn z 3−x−y O 3+ x
Autor:
Adalbert Feltz
Publikováno v:
Journal of the European Ceramic Society. 20:2367-2376
The paper reports the preparation, structure and electrical properties of oxide ceramic semiconductors based on the series SrxLa1−x TiIVx+yCoIIyCoIII1−x−2yO3 with perovskite type stucture: 0
Autor:
Adalbert Feltz, Ernst Gamsjäger
Publikováno v:
Journal of the European Ceramic Society. 18:2217-2226
The semiconductor behavior of thin and thick film β Ga2O3 layers is studied by measuring the resistivity as a function of oxygen partial pressure and temperature in the range up to 900°C. As for ZnO and SnO2 a relatively high initial oxygen vacancy
Autor:
Adalbert Feltz, Heinz Ragossnig
Publikováno v:
Journal of the European Ceramic Society. 18:1669-1677
Capacitance measurements of ferro- and paraelectric oxide powders in the frequency range of 1 kHz–10 MHz have been performed in order to deduce a form factor which is related to the morphology of the particles and their arrangement in the powder. U
Publikováno v:
physica status solidi (a). 166:315-325
Energy-filtering transmission electron microscopy (EFTEM) was applied to investigate the core-shell structure of a X7R-dielectrics. The investigations were performed with a Philips CM20 equipped with a GATAN imaging filter at 200 kV acceleration volt
Autor:
Adalbert Feltz, I Voigt
Publikováno v:
Solid State Ionics. :31-36
The redox behaviour of manganese oxide-doped Y 2 O 3 -stabilized ZrO 2 powders prepared from emulsions is studied using coulometric titration. Continuous oxygen release and bonding is dependence on the temperature indicates a homogeneous solid soluti
Autor:
Adalbert Feltz, Jörg Töpfer
Publikováno v:
Solid State Ionics. 59:249-256
Spinnels of the series Cu z NiMn 2− z O 4 (0≤z≤ 2 3 ) were prepared by thermal decomposition of oxalate precursors and sintering at elevated temperatures. The spinels are not stable at temperatures below 700°C and undergo a decomposition react