| Full text | |
| Author(s): |
Total Authors: 2
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| Affiliation: | [1] Univ Sao Paulo, Inst Quim Sao Carlos, Colloidal Mat Grp, BR-13566590 Sao Carlos, SP - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | NANO RESEARCH; v. 4, n. 7, p. 666-674, JUL 2011. |
| Web of Science Citations: | 10 |
| Abstract | |
The synthesis and self-assembly of tetragonal phase-containing L1(0)-Fe(55)Pt(45) nanorods with high coercive field is described. The experimental procedure resulted in a tetragonal/cubic phase ratio close to 1:1 for the as-synthesized nanoparticles. Using different surfactant/solvent proportions in the process allowed control of particle morphology from nanospheres to nanowires. Monodisperse nanorods with lengths of 60 +/- 5 nm and diameters of 2-3 nm were self-assembled in a perpendicular oriented array onto a substrate surface using hexadecylamine as organic spacer. Magnetic alignment and properties assigned, respectively, to the shape anisotropy and the tetragonal phase suggest that the self-assembled materials are a strong candidate to solve the problem of random magnetic alignment observed in FePt nanospheres leading to applications in ultrahigh magnetic recording (UHMR) systems capable of achieving a performance of the order of terabits/in(2). (AU) | |
| FAPESP's process: | 08/07568-4 - FePt-based magnetic nanorods: synthesis, characterization, and self-assembling for ultrahigh-density magnetic recording application. |
| Grantee: | Tiago Luis da Silva |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 07/07919-9 - COLLOIDAL MAGNETIC NANOCRYSTALS: SYNTHESIS OF SELF-ASSEMBLED AND MACROMOLECULES-FUNCTIONALISED NANOSPHERES, NANOWIRES, AND NANORODS FOR ADVANCED MAGNETIC RECORDING, BIOTECHNOLOGICAL, AND BIOMEDICAL APPLICATIONS. |
| Grantee: | Laudemir Carlos Varanda |
| Support Opportunities: | Research Grants - Young Investigators Grants |