| 학회 |
한국재료학회 |
| 학술대회 |
2005년 가을 (11/10 ~ 11/11, 한양대학교) |
| 권호 |
11권 2호 |
| 발표분야 |
전자재료 |
| 제목 |
MgO를 포함하는 Mn1.4Ni1.2Co0.4-xMgxO4 (0≤x≤0.25) 의 미세구조 |
| 초록 |
We have prepared polycrystalline Mn1.4Ni1.2Co0.4-xMgxO4 (0≤x≤0.25) samples using a solid-state reaction process and investigated the MgO doping effect on the microstructure. The sintered Mn1.4Ni1.2Co0.4-xMgxO4 (0≤x≤0.25) bodies were composed of the Mn- and Ni-rich phases with the cubic spinel structure, indicating a separation of Ni-rich phase in a Mn1.4Ni1.2Co0.4-xMgxO4 solid solution. The phase decomposition was likely to occur by the loss of oxygen in the ceramics during sintering. The substituted Mg did not affect the crystalline structure and formed a solid solution with the two decomposed phases. The substituted Mg retarded the grain growth during sintering. This is mainly attributed to the fact that the interaction forces between the added MgO and grain boundaries exert a dragging effect on the migration of the boundaries. |
| 저자 |
J. H. Lee1, I. H. Han2, J. Y. Kim1, H. S. Shin2, K. Park1
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| 소속 |
1Department of Advanced Materials Engineering, 2Sejong Univ. |
| 키워드 |
microstructure; MgO; Mn1.4Ni1.2Co0.4-xMgxO4; spinel structure; phase decomposition
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| E-Mail |
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