ISSN:
1573-8663
Keywords:
base metal electrodes
;
multilayer capacitors
;
re-oxidation BaTiO3
;
donor-acceptor complex
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract 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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1009926916939
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