High coercivity of ordered macroporous FePt films synthesized via colloidal templates.
The preparation of a three-dimensionally (3D) ordered macroporous iron-platinum (FePt) film derived from monodisperse FePt nanoparticles (approximately 3 nm in diameter) and polystyrene latex particles (254 nm in diameter) is described. The prepared film has a hexagonally ordered porous structure and coercivity up to 10 kOe after annealing at a temperature of 600 degrees C. We also found that size of FePt particles was maintained at around 3 nm, even after annealing at a temperature of 600 degrees C.
Iskandar
Ferry
F
Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima 739-8527, Japan.
Iwaki
Toru
T
Toda
Toshiyuki
T
Okuyama
Kikuo
K
D003102:Colloids / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D007501:Iron / Q000737:chemistry*; D008280:Magnetics; D008422:Materials Testing; D008567:Membranes, Artificial; D049329:Nanostructures / Q000032:analysis / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D010984:Platinum / Q000737:chemistry*; D016062:Porosity; D013499:Surface Properties
D003102:Colloids; D008567:Membranes, Artificial; D010984:Platinum; D007501:Iron