Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
87 (2000), S. 6049-6051
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Cobalt– and nickel–iron hexacyanide powders were synthesized by the microemulsion method using CoCl2 or NiCl2 and K3FeIII (CN)6. The resultant powders K0.2Co1.4[Fe(CN)6].6.5H2O and K0.8Ni1.1[Fe(CN)6].4.5H2O were single phase with a mean particle size in the range of 5–10 nm. Curie temperatures of the cobalt– and nickel–iron cyanide powders were estimated to be 14 and 28 K, respectively, using Curie–Weiss law. The coercivity was measured to be 1.8 kOe for nanoscaled Co–Fe cyanide particles. High coercivity of 4.0 kOe was achieved in the coprecipitated Ni–Fe cyanide powder. Superparamagnetic behavior was observed in the microemulsion-derived Ni–Fe cyanide particles. It has been found that a heat treatment at 150 °C led to a presence of a soft magnetic phase and a strong reduction of magnetic anisotropy. © 2000 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.372608
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