Nano-structure of Bulk Nano-granular Material in Cu/Co System.
-
- Zhou Cheng
- Department of Metallurgy, University of Tokyo
-
- Aizawa Tatsuhiko
- Department of Metallurgy, University of Tokyo
-
- Tatsuzawa Kiyohiko
- Department of Metallurgy, University of Tokyo
Bibliographic Information
- Other Title
-
- Cu/Co系ナノグラニュラーバルク材料のナノ組織
- Cu Coケイ ナノグラニュラーバルク ザイリョウ ノ ナノ ソシキ
Search this article
Abstract
Nano-granulation process of Cu/Co system is investigated on the route of bulk mechanical alloying. Using the bulk mechanical alloying, the super-satu rated solid solution of Cu-20mol%Co has been prepared. Through the further h eat treatment, the Co nano-precipitated from the super-saturated solid solut ion in the copper matrix, resulting in appearance of the giant magneto-resis tance. In the present study, the nano-precipitation of Co and the Co-particu late size is investigated by XRD, VSM and TEM. The relationship between the magneto-resistance ratio and the nano-precipitation process of Co is investi gated. This relation depends on both the nucleation rate of Co-cluster preci pitate and the growth rate of Co-cluster. The change of the magneto-resistan ce ratio with the Co-cluster size is also obtained: Co precipitate size mus t be 1-3 nm to attain higher magneto-resistance ratio than 10%.
Journal
-
- Journal of the Japan Society of Powder and Powder Metallurgy
-
Journal of the Japan Society of Powder and Powder Metallurgy 45 (12), 1202-1206, 1998
Japan Society of Powder and Powder Metallurgy
- Tweet
Details 詳細情報について
-
- CRID
- 1390001206308209792
-
- NII Article ID
- 10002053506
-
- NII Book ID
- AN00222724
-
- ISSN
- 18809014
- 05328799
-
- NDL BIB ID
- 4629459
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed