KR20110039449A - 복합 산화물 소결체, 복합 산화물 소결체의 제조방법, 스퍼터링 타겟 및 박막의 제조방법 - Google Patents
복합 산화물 소결체, 복합 산화물 소결체의 제조방법, 스퍼터링 타겟 및 박막의 제조방법 Download PDFInfo
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- KR20110039449A KR20110039449A KR1020117002435A KR20117002435A KR20110039449A KR 20110039449 A KR20110039449 A KR 20110039449A KR 1020117002435 A KR1020117002435 A KR 1020117002435A KR 20117002435 A KR20117002435 A KR 20117002435A KR 20110039449 A KR20110039449 A KR 20110039449A
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Abstract
Description
도 2는 비교예 2의 소결체의 단면을 나타낸 SEM 사진;
도 3은 실시예 3의 복합 산화물 소결체의 단면을 나타낸 SPM 사진;
도 4는 비교예 2의 소결체의 단면을 나타낸 SPM 사진.
12: 긴 직경 13: 짧은 직경
20: 금속산화물 입자(a) 21, 22: 금속산화물 입자(b)
Claims (11)
- 육방정계 층상 구조를 가지며 산화아연 및 인듐을 함유하는 금속산화물 입자(a); 및
스피넬 구조를 가지며 금속 원소 M(단, M은 알루미늄 및/또는 갈륨)을 함유하는 금속산화물 입자(b)를 포함하되,
상기 금속산화물 입자(a)의 긴 직경의 평균치는 10㎛ 이하이며,
개수기준으로 상기 금속산화물 입자(a)의 전체의 20% 이상은 애스펙트비(긴 직경/짧은 직경)가 2 이상인 것인, 복합 산화물 소결체. - 제1항에 있어서, 상기 금속산화물 입자(b)의 최대 입자직경은 10㎛ 이하인 것인 복합 산화물 소결체.
- 제1항 또는 제2항에 있어서, 아연, 인듐 및 상기 금속 원소 M의 합계에 대한 인듐의 원자비가 0.001 내지 0.02이며,
상기 합계에 대한 상기 금속 원소 M의 원자비가 0.005 내지 0.05인 것인 복합 산화물 소결체. - 제1항 내지 제3항 중 어느 한 항에 있어서, 상기 금속산화물 입자(b)는 ZnM2O4를 주성분으로서 함유하는 것인 복합 산화물 소결체.
- 제1항 내지 제4항 중 어느 한 항에 있어서, 상기 금속 원소 M은 알루미늄인 것인 복합 산화물 소결체.
- 산화아연 분말과 산화인듐 분말을 혼합해서 제1혼합 분말을 얻는 제1공정;
상기 제1혼합 분말과 금속 원소 M(단, M은 알루미늄 및/또는 갈륨)을 함유하는 산화물 분말을 혼합해서 제2혼합 분말을 얻는 제2공정; 및
상기 제2혼합 분말을 성형해서 소성하여, 복합 산화물 소결체를 얻는 제3공정을 포함하되,
상기 제1공정에서는, 제1혼합 분말의 BET값이 혼합 전의 상기 산화아연 분말과 상기 산화인듐 분말의 BET값의 가중 평균값보다도 2㎡/g 이상 커지도록 상기 산화아연 분말과 상기 산화인듐 분말을 혼합하는 것인, 복합 산화물 소결체의 제조방법. - 제6항에 있어서, 상기 제3공정에서 얻어지는 상기 복합 산화물 소결체는,
육방정계 층상 구조를 가지며 산화아연 및 인듐을 함유하는 금속산화물 입자(a)와,
스피넬 구조를 가지며 금속 원소 M(단, M은 알루미늄 및/또는 갈륨)을 함유하는 금속산화물 입자(b)를 포함하고 있고,
상기 금속산화물 입자(a)의 긴 직경의 평균치는 10㎛ 이하이며,
개수기준으로 상기 금속산화물 입자(a)의 전체의 20% 이상은 애스펙트비(긴 직경/짧은 직경)가 2 이상인 것인, 복합 산화물 소결체의 제조방법. - 제6항 또는 제7항에 있어서, 상기 제2혼합 분말에 있어서, 아연, 인듐 및 상기 금속 원소 M의 합계에 대한 인듐의 원자비가 0.001 내지 0.02이며, 상기 합계에 대한 상기 금속 원소 M의 원자비가 0.005 내지 0.05인 것인, 복합 산화물 소결체의 제조방법.
- 제6항 내지 제8항 중 어느 한 항에 있어서, 상기 금속 원소 M은 알루미늄인 것인, 복합 산화물 소결체의 제조방법.
- 제1항 내지 제5항 중 어느 한 항에 기재된 복합 산화물 소결체로 이루어진 스퍼터링 타겟.
- 제10항에 기재된 스퍼터링 타겟을 이용하는 박막의 제조방법.
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