TY - JOUR
T1 - Fabrication of magnetic nickel-tungsten-phosphorus particles by electroless deposition
AU - Chang, Ming Kai
AU - Chen, Chun Han
AU - Chen, Bing Hung
N1 - Funding Information:
This study was financially supported by the National Science Council (NSC) of Taiwan. We thank the NSC Instrument Development Center at the National Cheng Kung University for generous allocation of instrument usage to SEM (Hitachi S-4100) and TEM (Zeiss C10).
PY - 2006/10
Y1 - 2006/10
N2 - Nickel-tungsten-phosphorus (NiWP) particles with diameters ranging from 100 to 300 nm were fabricated by electroless deposition on silica particles and Au seeds. TEM, SEM equipped with EDX, and SQUID were employed to characterize these particles. It is found that 70 °C is sufficient to deposit NiWP particles, in contrast to 90 °C required for NiP or NiWP deposited on planar substrates. Magnetic properties of these particles are profoundly influenced by P-contents, whereas replacement of P with W changes the particles from paramagnetic to soft-ferromagnetic nature. Curie temperatures and saturation magnetization of these particles are around 300 K and from 0.1 to 20 emu/g, respectively.
AB - Nickel-tungsten-phosphorus (NiWP) particles with diameters ranging from 100 to 300 nm were fabricated by electroless deposition on silica particles and Au seeds. TEM, SEM equipped with EDX, and SQUID were employed to characterize these particles. It is found that 70 °C is sufficient to deposit NiWP particles, in contrast to 90 °C required for NiP or NiWP deposited on planar substrates. Magnetic properties of these particles are profoundly influenced by P-contents, whereas replacement of P with W changes the particles from paramagnetic to soft-ferromagnetic nature. Curie temperatures and saturation magnetization of these particles are around 300 K and from 0.1 to 20 emu/g, respectively.
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U2 - 10.1016/j.jmmm.2006.01.031
DO - 10.1016/j.jmmm.2006.01.031
M3 - Article
AN - SCOPUS:33747806602
SN - 0304-8853
VL - 305
SP - 342
EP - 347
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 2
ER -