amakuru

PTC bivuga ibintu bya termistor cyangwa ibintu byiyongera cyane mukurwanya hamwe nubushyuhe bwiza bwubushyuhe ku bushyuhe runaka, bushobora gukoreshwa cyane nkicyuma gihoraho. Ibikoresho ni umubiri wacumuye hamwe na BaTiO3, SrTiO3 cyangwa PbTiO3 nkibice byingenzi, aho hongerwamo umubare muto wa oxyde nka Nb, Ta, Bi, Sb, y, La nizindi oxyde kugirango ugenzure agaciro ka atome kugirango ikore igice cya kabiri. Iyi semiconducting barium titanate nibindi bikoresho bakunze kwita feri ya semiconducting (bulk); icyarimwe, oxyde ya manganese, fer, umuringa, chromium nibindi byongeweho byongerwaho kugirango ubushyuhe bwubushyuhe bwo guhangana neza.

PTC bivuga ibintu bya termistor cyangwa ibintu byiyongera cyane mukurwanya hamwe nubushyuhe bwiza bwubushyuhe ku bushyuhe runaka, bushobora gukoreshwa cyane nkicyuma gihoraho. Ibikoresho ni umubiri wacumuye hamwe na BaTiO3, SrTiO3 cyangwa PbTiO3 nkibice byingenzi, aho hongerwamo umubare muto wa oxyde nka Nb, Ta, Bi, Sb, y, La nizindi oxyde kugirango ugenzure agaciro ka atome kugirango ikore igice cya kabiri. Iyi semiconducting barium titanate nibindi bikoresho bakunze kwita feri ya semiconducting (bulk); icyarimwe, oxyde ya manganese, fer, umuringa, chromium nibindi byongeweho byongerwaho kugirango ubushyuhe bwubushyuhe bwo guhangana neza. Platinum titanate hamwe nigisubizo cyayo gikomeye ni kimwe cya kabiri cyogukorwa nubutaka busanzwe bwa ceramic hamwe nubushyuhe bwo hejuru kugirango ubone ibikoresho bya termistor bifite ibimenyetso byiza. Ubushyuhe bwa coefficient hamwe na Curie point ubushyuhe buratandukana nibigize hamwe no gucumura (cyane cyane ubushyuhe bukonje).
Barium titanate kristu ni iyimiterere ya perovskite. Nibikoresho bya ferroelectric, kandi barium titanate yuzuye ni ibikoresho byiziritse. Nyuma yo kongeramo ibintu bidasanzwe byubutaka kuri barium titanate no kuvura neza ubushyuhe, ubukana bwiyongera cyane nuburyo bwinshi bwubunini bukikije ubushyuhe bwa Curie, bikavamo ingaruka ya PTC, ibyo bikaba bihuye na ferroelectricity ya barium titanate kristal hamwe nibikoresho kuri ubushyuhe bwa Curie. icyiciro cyinzibacyuho. Barium titanate semiconductor ceramics nibikoresho bya polycristaline bifite intera hagati yintete. Iyo ceramic ya semiconductor igeze ku bushyuhe cyangwa voltage runaka, imbibi zingano zirahinduka, bikavamo impinduka zikomeye mukurwanya
Ingaruka ya PTC ya barium titanate semiconductor ceramics ituruka kumupaka w'ingano (imbibi z'ingano). Mugukoresha electron, intera hagati yibice ikora nkinzitizi. Iyo ubushyuhe buri hasi, bitewe nigikorwa cyumuriro wamashanyarazi muri barium titanate, electron zirashobora kunyura byoroshye kuri bariyeri ishobora kuba, bityo agaciro ko guhangana ni nto. Iyo ubushyuhe buzamutse hafi yubushyuhe bwa Curie (ni ukuvuga ubushyuhe bukomeye), umurima wamashanyarazi wimbere urasenyuka, udashobora gufasha kuyobora electron kugirango zambuke inzitizi. Ibi bihwanye no kwiyongera kwinzitizi zishobora kwiyongera no kwiyongera gutunguranye, bikavamo ingaruka za PTC. Moderi yumubiri yingaruka za PTC ya barium titanate semiconductor ceramics harimo moderi ya bariyeri ya Haiwang, moderi ya barium yubusa hamwe na barrière barrière ya Daniels nabandi. Batanze ibisobanuro byumvikana kubikorwa bya PTC muburyo butandukanye.