| 申请日期 | 2025-07-07 | 申请号 | US16075841 |
| 公开（公告）号 | US20190031528A1 | 公开（公告）日 | 2019-01-31 |
| 公开国别 | US | 申请人省市代码 | 全国 |
| 申请人 | NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY | ||
| 简介 | A ruthenium compound exhibits large negative thermal expansion. The ruthenium oxide is represented by the formula (1) Ca2−xRxRu1−yMyO4+z (wherein R represents at least one element selected from among alkaline earth metals and rare earth elements; M represents at least one element selected from among Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, and Ga; and the following relations are satisfied : 0≤x<0.2, 0≤y<0.3, and −1 | ||
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