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PTKU v sistemu KNbO3-BaTiO3 = PTCR effect in KnbO3-BaTiO3 ceramicsPribošič, Irena ; Makovec, Darko ; Drofenik, MihaelRaziskovali smo efekt pozitivnega temperaturnega koeficienta upornosti (PTKU) v keramiki trdne raztopine med KNbO[spodaj]3 in BaTiO[spodaj]3. Vzorci KNbO[spodaj]3 so bili pripravljeni po klasični ... keramični tehnologiji, tj. s kalcinacijo oksidov in karbonatov. Z dodatkom BaTiO[spodaj]3 k KNbO[spodaj]3 se je zmanjšala velikost zrn in povečala gostota. Meritev dielektričnosti v odvisnosti od temperature je pokazala, da se dielektrični maksimum, ki je posledica temperaturnega prehoda iz tetragonalne v kubično strukturo, z dodajanjem BaTiO[spodaj]3 širi in premika k nižjim temperaturam. Z redukcijo in nadaljnjo reoksidacijo vzorcev smo pripravili keramiko, ki kaže PTKU efekt. Vendar pa po večkratnem segrevanju do 500 [kompozitum]C in ohlajanju vzorcev se le ta zaradi reoksidacije zmanjša.Source: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 39, št. 1/2, 2005, str. 43-46)Type of material - article, component partPublish date - 2005Language - slovenianCOBISS.SI-ID - 392362
Author
Pribošič, Irena |
Makovec, Darko |
Drofenik, Mihael
Topics
ferroelektriki |
kalijev niobat |
barijev titanat |
PTKU |
ferroelectrics |
potassium niobate |
barium titanate |
PTCR effect
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source: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 39, št. 1/2, 2005, str. 43-46)
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Year | Impact factor | Edition | Category | Classification | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Pribošič, Irena | 19990 |
Makovec, Darko | 10372 |
Drofenik, Mihael | 01360 |
Source: Personal bibliographies
and: SICRIS
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