Publication Detail

Current–voltage Characteristics of Grain Boundaries in Polycrystalline Sr-doped LaGaO3

UCD-ITS-RP-12-115

Reprint

Available online at: DOI: 10.1039/C2CP40763A

Suggested Citation:
Chen, Chien-Ting, Kwanghoon Choi, Sangtae Kim (2012) Current–voltage Characteristics of Grain Boundaries in Polycrystalline Sr-doped LaGaO3. Physical Chemistry Chemical Physics 14 (25), 9047 - 9049

The oxide-ion current across grain boundaries in a polycrystalline LaGaO3 ceramic doped with 1 mol% Sr2+ increases non-linearly with the applied dc-bias to present a transition from ohmic to superohmic where the bias exceeds the thermal voltage, verifying that a Schottky-type potential barrier exists at the grain boundary in acceptor-doped LaGaO3 to limit the internal current.