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Method for improving coercive force of epsilon-type iron oxide, and epsilon-type iron oxide
US9458026B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9458026-B2 |
| Application number | US-201013499172-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 30, 2010 |
| Priority date | Sep 30, 2009 |
| Publication date | Oct 4, 2016 |
| Grant date | Oct 4, 2016 |
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Abstract
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To provide a method for improving a coercive force of epsilon-type iron oxide particles, and an epsilon-type iron oxide. Specifically, to provide a method for improving the coercive force of an epsilon-type iron oxide comprising: substituting Fe-site of the epsilon-type iron oxide with other element, while not substituting Fe of D-site in the epsilon-type iron oxide with other element, and the epsilon type iron oxide.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for improving a coercive force of epsilon-type iron oxide, comprising: substituting Fe of a Fe-site of the epsilon-type iron oxide with a platinum group element, while not substituting Fe of D-site in the epsilon-type iron oxide with the platinum group element. 2. The method for improving the coercive force of epsilon-type iron oxide according to claim 1 , wherein Fe of A-site in the epsilon-type iron oxide is not substituted with the platinum group element. 3. The method for improving the coercive force of the epsilon-type iron oxide according to claim 1 , wherein the platinum group element is rhodium. 4. The method for improving the coercive force of the epsilon-type iron oxide according to claim 2 , wherein the platinum group element is rhodium.
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Classifications
Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina · CPC title
- C01G49/06Primary
Ferric oxide [Fe2O3] · CPC title
non-metallic substances, e.g. ferrites {, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure} · CPC title
Mixed oxides or hydroxides, (C01G49/0009 takes precedence) · CPC title
Iron group metal oxides · CPC title
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- What does patent US9458026B2 cover?
- To provide a method for improving a coercive force of epsilon-type iron oxide particles, and an epsilon-type iron oxide. Specifically, to provide a method for improving the coercive force of an epsilon-type iron oxide comprising: substituting Fe-site of the epsilon-type iron oxide with other element, while not substituting Fe of D-site in the epsilon-type iron oxide with other element, and the …
- Who is the assignee on this patent?
- Ohkoshi Shin-Ichi, Sakurai Shunsuke, Namai Asuka, and 6 more
- What technology area does this patent fall under?
- Primary CPC classification C01G49/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 04 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).