Direct synthesis of partially ordered tetragonally structured FePt nanoparticles by polyol method for biomedical application

Authors

• J. Majeed ¹
• F. Syed ¹
• O. D. Jayakumar ¹
• C. Sudakar ²
• P. S. V. Mocherla ²
• M. S. R. Rao ²
• A. K. Tyagi ¹

1. Chemistry Division, Bhabha Atomic Research Centre, Mumbai, India-400085.
2. Department of Physics, Indian Institute of Technology, Chennai, India- 600036.

Abstract

We report the direct soft chemical synthesis and characterization of a family of face centered cubic (fcc) and partially ordered face centered tetragonal (fct) FePt nanoparticles (NPs) suitable for biomedical applications. Both fcc and partially ordered fct-FePt NPs are synthesized by employing a simple polyol method. By using polyvinyl pyrolidone (PVP) as a stabilizer in various ratios during synthesis, fcc-FePt NPs have been converted into partially ordered fct-FePt NPs at low temperature (300^˚C) . The advantages of this process are its simplicity, the short reaction time, easy preparation and dispersibility of the NPs in aqueous media.

Keywords

• Ferromagnetism
• DC magnetization
• Transmission electron microscopy
• FePt
• Nanopartcles