Reverse micelle method for preparing FePt alloy nanoparticles
Title：
Reverse micelle method for preparing FePt alloy nanoparticles
Application Number：
 200410000723
Application Date：
 2004/01/16
Announcement Date：
 2004/12/29
Pub. Date：
Publication Number：
 1557587
Announcement Number：
 1230269
Grant Date：
 2005-12-7
Granted Pub. Date：
 2005-12-7
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 B22F 9/24
Applicant(s)：
 Tsinghua University
Inventor(s)：
 Hu Xuerang, Tuo Xinlin, Yuan Jun
Key Words：
 Reverse micelle, preparing method, FePt alloy, nanoparticles
Abstract：
 The present invention is reverse micelle process of preparing nano FePt alloy grain and belongs to the field of magnetic record medium preparing technology. The present invention features that salts of Fe and Pt are first set into organic solvent containing surfactant to produce phase transfer effect of transferring metal ion from water phase to organic solvent to form reverse micelle; surface stabilizer and reductant are then added into organic phase solution to complete reduction of metal ion, formation of grain kernel and growth of grain inside the reverse micelle and form the dispersed liquid of nano FePt alloy grain; and the nano FePt alloy grain is finally separated from the dispersed liquid. The said process has the features of less danger, low cost, small grain size, simple production apparatus and excellent industrial application foreground.
Claim：
Priority：
PCT：
LegalStatus：

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  Selected patents owned by Tsinghua University filed in 2005 are loaded.
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