Fabrication of FePt@Au Nanoparticles by Reverse Micelle Method

Autor:	Chien-Jung Huang, Shi-Mian Chao, K. T. Lam, T. L. Wu, Teen-Hang Meen, Jenn-Kai Tsai, Wen-Ray Chen
Rok vydání:	2011
Předmět:	Fabrication Materials science Absorption spectroscopy Nanoparticle Nanotechnology Coercivity Condensed Matter Physics Micelle Electronic Optical and Magnetic Materials law.invention SQUID Chemical engineering Transmission electron microscopy law Ambient pressure
Zdroj:	Ferroelectrics. 421:43-49
ISSN:	1563-5112 0015-0193
DOI:	10.1080/00150193.2011.594315
Popis:	In this study, magnetic iron platinum alloy-core/gold-shell (FePt@Au) nanoparticles (NPs) were synthesized using the reverse micelle technique under ambient pressure at 25°C. Gold-coated NPs are prevented FePt oxidation and allowed the samples to be manipulated without additional precautions to prevent oxidation. FePt@Au NPs were successfully fabricated and demonstrated by X-ray diffractometry (XRD) and ultraviolet-visible absorption spectra. Transmission electron microscopy (TEM) reveals the average diameter of FePt@Au NPs is about 5.7 nm. The result of superconducting quantum interference device (SQUID) magnetometry shows it was super-paramagnetic, the blocking temperature and the coercive field of 26 K and 350 Oe, respectively.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::914a3d475e271dacbb8b54c615430559 https://doi.org/10.1080/00150193.2011.594315 Zobrazit plný text záznamu