Electronic circuit package
US-2017311448-A1 · Oct 26, 2017 · US
Permanent magnet and rotating machine including the same
US2016365181A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016365181-A1 |
| Application number | US-201615135337-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 21, 2016 |
| Priority date | Apr 21, 2015 |
| Publication date | Dec 15, 2016 |
| Grant date | — |
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- Title
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Abstract
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A permanent magnet having a periodic structure with the concentrations of Fe and T (T is one or more transition metal elements with Co or Ni as necessity) changing alternately, wherein, the concentrations change with a period of 3.3 nm or less and the concentration difference of Fe in the concentration change is 5 at % or more. The permanent magnet has a high saturation magnetization Is and coercivity HcJ and can be prepared even without rare earth element(s) R.
First claim
Opening claim text (preview).
1 . A permanent magnet comprising a periodic structure in which the concentrations of Fe and T change alternately, wherein, T is one or more transition metal elements with Co or Ni as necessity, the concentrations change with a period of 3.3 nm or less, and the concentration difference of Fe in the concentration change is 5 at % or more. 2 . The permanent magnet according to claim 1 , wherein, the composition in the periodic structure is Fe 1-x T x (0.15≦x≦0.8). 3 . A rotating machine comprising the permanent magnet according to claim 1 . 4 . A rotating machine comprising the permanent magnet according to claim 2 .
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Classifications
- H01F1/0306Primary
Metals or alloys, e.g. LAVES phase alloys of the MgCu2-type (H01F1/0304 takes precedence) · CPC title
containing Co and Ni · CPC title
by cathode sputtering · CPC title
- H01F1/055Primary
and magnetic transition metals, e.g. SmCo5 · CPC title
Construction of PM (H01F7/0278 takes precedence; PM compositions H01F1/032) · CPC title
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- What does patent US2016365181A1 cover?
- A permanent magnet having a periodic structure with the concentrations of Fe and T (T is one or more transition metal elements with Co or Ni as necessity) changing alternately, wherein, the concentrations change with a period of 3.3 nm or less and the concentration difference of Fe in the concentration change is 5 at % or more. The permanent magnet has a high saturation magnetization Is and coe…
- Who is the assignee on this patent?
- Tdk Corp
- What technology area does this patent fall under?
- Primary CPC classification H01F1/0306. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Dec 15 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).