| Grain boundary structure and electrical characteristics of alkaline metallic cation-diffused $(SrCa)TiO_3$ ceramics |
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Hyeon Heo, Nam-Hui Cho |
| 알칼리 금속 이온의 입계확산에 따른 $(SrCa)TiO_3$ 소결체의 입계구조 및 전기적 특성 |
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허현, 조남희 |
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인하대학교 무기재료공학과 |
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| Abstract |
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Semiconducting (Sr0.85Ca0.15)TiO3 ceramics were prepared by conventional powder synthesis techniques, and then alkaline metallic cations were diffused into the ceramic bodies. The threshold voltage of the ceramics increases with increasing diffusion time and the amount of diffused materials. The ceramics had boundary potential heights of 0.01 ~ 2.89 eV, while their boundary resistance ranged from 2.2 $M{Omega}$ to 120.4 $M{Omega}$. Such electrical characteristics of the boundaries were correlated with the boundary structure of the ceramics obtained by transmission electron microscopy. |
| Key Words:
(Sr0.85Ca0.15)TiO3, boundary potential height, boundary resistance, boundary structure |
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