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Title: Controlled Growth and Magnetic Property of FePt Nanostructure: Cuboctahedron, Octapod, Truncated Cube and Cube
Authors: 國立臺灣師範大學化學系
S.-W. Chou
C.-L. Zhu
S. Neeleshwar
C.-L. Chen
Y.-Y. Chen
Chia-Chun Chen
Issue Date: 27-Oct-2009
Publisher: American Chemical Society
Abstract: The strategy for shape control of alloy FePt nanocrystal was studied systematically. By the careful adjustments of reaction parameters in a solution reaction, surfactant−facet bindings on the growth seed were controlled delicately. FePt octapod, cuboctahedron, truncated cube, and nanocube were successfully prepared from cuboctahedral seed and examined by high-resolution transmission electron microscopy. The formations of FePt nanostructures were mainly attributed to the differences in the growth rate between the {111} and {100} planes of cuboctahedral seeds. The magnetic measurements showed that the order of volume, V(nanocube) > V(octapod) > V(cuboctahedron) obviously reflected the order of saturated magnetization (Ms), Ms (nanocube) > Ms (octapod) > Ms (cuboctahedron). Furthermore, the measurements of octapod exhibited the highest coercivity and blocking temperature because of its higher surface to volume ratio and more structural facets.
ISSN: 0897-4756
Other Identifiers: ntnulib_tp_C0301_01_061
Appears in Collections:教師著作

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