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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국전기전자재료학회 Transactions on Electrical and Electronic Materials Transactions on Electrical and Electronic Materials 제19권 제5호
- 발행연도
- 2018.10
- 수록면
- 330 - 336 (7page)
- DOI
- https://doi.org/10.1007/s42341-018-0060-6
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초록· 키워드
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A stress behavior of non-ohmic properties for ZPCCD (ZnO?Pr 1.83 ?CoO?Cr 2 O 3 ?Dy 2 O 3 ) varistors was investigated for diff erentamounts of the doped Er 2 O 3 . With the amount of the doped Er 2 O 3 increased, the density of the sintered pellet decreasedfrom 5.56 to 5.43 g/cm 3 , and the average grain size decreased from 16.4 to 6.8 μm. With the amount of the doped Er 2 O 3increased, the breakdown fi eld increased from 1676 to 3939 V/cm, and the non-ohmic coeffi cient exhibited the fl uctuationbetween 41.4 and 68.1. The varistors doped with 0.25 mol% Er 2 O 3 of exhibited the strongest electrical stability; variationrates for the breakdown fi eld and for the non-ohmic coeffi cient were 0.1 and ? 8.3%, respectively, after application of astrong stress (0.95 E B /150 °C/24 h).
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