Recent research developments in SnO2-based varistors
MR Cássia-Santos, VC Sousa, MM Oliveira… - Materials Chemistry and …, 2005 - Elsevier
This paper discusses some advances in research conducted on SnO2-based
electroceramics. The addition of different dopants, as well as several thermal treatments in …
electroceramics. The addition of different dopants, as well as several thermal treatments in …
Role of oxygen at the grain boundary of metal oxide varistors: A potential barrier formation mechanism
A model is proposed here to explain how the chemical features of metal oxide varistors can
alter their nonohmic physical behavior, based on nonohmic similarities in the electrical …
alter their nonohmic physical behavior, based on nonohmic similarities in the electrical …
Study of electrical properties of nickel doped SnO2 ceramic nanoparticles
Nickel doped tin oxide (Sn1− xNixO2, where x= 0, 0.05, 0.07 and 0.09) nanoparticles with
sub-5nm size were synthesized using sol–gel method. The structural and compositional …
sub-5nm size were synthesized using sol–gel method. The structural and compositional …
[PDF][PDF] Effect of Bi2O3 addition on the microstructure and electrical properties of the SnO2. CoO. Nb2O5 varistor system
Tin dioxide (SnO2) is an n type semiconductor with crystalline structure of rutile type and has
low densification rate due to its high surface diffusion at low temperatures and high SnO2 …
low densification rate due to its high surface diffusion at low temperatures and high SnO2 …
Co-doped α-MoO3 hierarchical microrods: Synthesis, structure and phonon properties
We present a study on the structural and phonon properties of cobalt-doped orthorhombic
molybdenum trioxide (α-MoO 3: xCo) hierarchical microrods. The samples were synthesized …
molybdenum trioxide (α-MoO 3: xCo) hierarchical microrods. The samples were synthesized …
Electric field-assisted flash sintering of tin dioxide
R Muccillo, ENS Muccillo - Journal of the European Ceramic Society, 2014 - Elsevier
SnO 2 green pellets were submitted to ac electric fields at temperatures below 1350° C.
Electric current pulses occurred and a substantial modification was found in the …
Electric current pulses occurred and a substantial modification was found in the …
Sintering and grain growth of CoO-doped CeO2 ceramics
Co-doped CeO2 powders with atomic ratios equal to 0.25, 1 and 3% were synthesized by
the conventional mixed-oxide method. No binary compounds were detected in the CeO2 …
the conventional mixed-oxide method. No binary compounds were detected in the CeO2 …
Room-temperature ferromagnetism in chemically synthesized Sn1− xCoxO2 powders
A Punnoose, J Hays, V Gopal… - Applied physics …, 2004 - pubs.aip.org
Room-temperature ferromagnetism is observed in chemically synthesized powder samples
of Sn 1− x Co x O 2 with x= 0.005 and 0.01. Magnetic hysteresis loops are observed at 300 K …
of Sn 1− x Co x O 2 with x= 0.005 and 0.01. Magnetic hysteresis loops are observed at 300 K …
Structural, electronic, and magnetic properties of Co doped SnO2 nanoparticles
We present a detailed study on the structural, electronic, and magnetic properties of
chemically synthesized Sn 1− x Co x O 2 ( x= 0.00 to 0.05) nanoparticles. X-ray diffraction …
chemically synthesized Sn 1− x Co x O 2 ( x= 0.00 to 0.05) nanoparticles. X-ray diffraction …
Microstructural evolution during sintering of CoO doped SnO2 ceramics
Addition of 0.5 mol% of CoO into SnO2 promotes densification of this oxide to 99% of the
theoretical density during sintering. TEM in this system reveals that after sintering at 1210° C …
theoretical density during sintering. TEM in this system reveals that after sintering at 1210° C …