In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 33, No. 3R ( 1994-03-01), p. 1412-
Kurzfassung:
The minimum room-temperature resistivity for La–Mn–codoped BaTiO 3 occurred at [La +3 ]-5/3[Mn + x ]∼0.35 mol%. Most of the Mn acceptors were in the bulk regions, existing as Mn +2 ions. The others, existing as Mn +3 ions, cause the grain growth inhibition effect and should exist at the grain boundaries, similar to an acceptor level. The slope of the positive temperature coefficient resistance (PTCR) effect (ρ 160° C /ρ 120° C ) was increased with increasing Mn content. However, the maximum order of PTCR (ρ max /ρ min ) existed at [Mn + x ]∼0.06 mol%.
Materialart:
Online-Ressource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.33.1412
Sprache:
Unbekannt
Verlag:
IOP Publishing
Publikationsdatum:
1994
ZDB Id:
218223-3
ZDB Id:
797294-5
ZDB Id:
2006801-3
ZDB Id:
797295-7
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