Controlled synthesis and magnetic properties of nickel phosphide and bimetallic iron–nickel phosphide nanorods

Bhupendra Singh, Chia Ling Ho, Yuan Chieh Tseng, Chieh-Tsung Lo

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Nickel phosphide (Ni2P) and bimetallic iron–nickel phosphides [(FexNiy)2P] nanorods were fabricated by a seeded growth strategy. This strategy utilized pre-synthesized Fe3O4 nanoparticles as seeds and the thermal decomposition of metal precursors by multiple injections in a solution containing trioctyl-phosphine and didodecyldimethylammonium bromide (DDAB). The nanorods were characterized by transmission electron microscopy, X-ray diffraction, and magnetic measurements were carried out using super-conducting quantum interference device (SQUID). The rod length was tunable, ranging from 10 to 110 nm depending on the number of injections, whereas the diameter of the rods was nearly 6 nm. It was found that the rod size increased with the number of injections under the constant total injection concentration and reaction time. In addition, the effect of the DDAB quantity used as a co-surfactant was studied, which showed that an optimum quantity was required to achieve uniform nanorods. Magnetic characterizations were performed over the two kinds of nanorods to identify their respective magnetic phases. The results demonstrated that the Ni2P nanorods were defined as a Curie–Weiss paramagnet, whereas the (FexNiy)2Pnano-rods exhibited superparamagnetic characteristics.

Original languageEnglish
Article number706
JournalJournal of Nanoparticle Research
Volume14
Issue number2
DOIs
Publication statusPublished - 2012 Feb 1

Fingerprint

phosphides
Nanorods
Magnetic Properties
Nickel
nanorods
Magnetic properties
nickel
Synthesis
magnetic properties
Injection
rods
injection
synthesis
phosphine
bromides
Magnetic Measurements
Quantum Interference
Reaction Time
SQUIDs
Surfactant

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Atomic and Molecular Physics, and Optics
  • Chemistry(all)
  • Modelling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

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abstract = "Nickel phosphide (Ni2P) and bimetallic iron–nickel phosphides [(FexNiy)2P] nanorods were fabricated by a seeded growth strategy. This strategy utilized pre-synthesized Fe3O4 nanoparticles as seeds and the thermal decomposition of metal precursors by multiple injections in a solution containing trioctyl-phosphine and didodecyldimethylammonium bromide (DDAB). The nanorods were characterized by transmission electron microscopy, X-ray diffraction, and magnetic measurements were carried out using super-conducting quantum interference device (SQUID). The rod length was tunable, ranging from 10 to 110 nm depending on the number of injections, whereas the diameter of the rods was nearly 6 nm. It was found that the rod size increased with the number of injections under the constant total injection concentration and reaction time. In addition, the effect of the DDAB quantity used as a co-surfactant was studied, which showed that an optimum quantity was required to achieve uniform nanorods. Magnetic characterizations were performed over the two kinds of nanorods to identify their respective magnetic phases. The results demonstrated that the Ni2P nanorods were defined as a Curie–Weiss paramagnet, whereas the (FexNiy)2Pnano-rods exhibited superparamagnetic characteristics.",
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Controlled synthesis and magnetic properties of nickel phosphide and bimetallic iron–nickel phosphide nanorods. / Singh, Bhupendra; Ho, Chia Ling; Tseng, Yuan Chieh; Lo, Chieh-Tsung.

In: Journal of Nanoparticle Research, Vol. 14, No. 2, 706, 01.02.2012.

Research output: Contribution to journalArticle

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