Tuning crystal structure and magnetic property of dispersible FePt intermetallic nanoparticles

Abstract

ABSTRACT, which indicated the great potential of FePt intermetallic NPs as molecular probes for cancer diagnosis.

Glycerol Electro-Oxidation in Alkaline Medium with Pt-Fe/C Electrocatalysts Synthesized by the Polyol Method: Increased Selectivity and Activity Provided by Less Expensive Catalysts

“…To overcome this low metal loading and iron content, we repeated the synthesis in the presence of hydrazine by changing the parameters such as the pH, amount of hydrazine, reflux time, and temperature, but the results did not improve. Our findings agreed with the literature reports about the difficulty in achieving the nominal composition when dealing with platinum and iron catalysts [ 28 , 29 , 30 , 31 ].…”

“…Iron is the fourth most abundant element in the crust. Platinum and iron easily form alloys with three well-known crystalline structures: one alloy (Pt x Fe) and two ordered intermetallic alloys (PtFe and Pt 3 Fe) [ 28 , 29 , 30 , 31 ]. Synthesis processes under mild conditions, i.e., without the need for extreme heating or addition of strong reducing agents, cannot provide the desired/nominal chemical composition [ 29 , 31 , 32 ].…”

Synergizing ICP-MS, STEM-EDXS, and SMPS single particle analytics exemplified by superlattice L10 Pt/Fe aerosol nanoparticles produced by spark ablation

“…However, the synthesis of Pt/Fe in chemically ordered L1 0 configuration requires the manufacturer to thoroughly control and maintain a Pt mass fraction of 45–60 wt-% to force Pt/Fe to crystallize in favorable L1 0 crystal configuration. 23 This example clearly shows the importance of measuring the achieved composition of produced Pt/Fe NPs. By now, scanning transmission electron microscopy with energy-dispersive X-ray spectroscopy (STEM-EDXS) is a commonly used analytical technique for morphology and composition elucidation for single-particles.…”

Influence of Particle Size on the Spin Pinning Effect in the fcc-FePt Nanoparticles

“…In the meantime, the Fe(CO) 5 (0.3 mL) was injected into the mixture. Then the mixed solution was heated to 240°C and soaked at this temperature for 1 or 2 or 3 h. After that, the mixture was cooled to the room temperature spontaneously [15][16][17]. The experimental product was washed by hexane and ethanol thoroughly.…”