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Shape and Magnetic Properties of Single‐Crystalline Hematite (α‐Fe 2 O 3 ) Nanocrystals
Author(s) -
Cao Huaqiang,
Wang Guozhi,
Zhang Lei,
Liang Yu,
Zhang Sichun,
Zhang Xinrong
Publication year - 2006
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200600130
Subject(s) - hematite , nanocrystal , cube (algebra) , hydrothermal circulation , materials science , microstructure , nanotechnology , anisotropy , crystallography , nanostructure , hydrothermal synthesis , magnetic susceptibility , chemical engineering , mineralogy , chemistry , physics , optics , combinatorics , mathematics , engineering
Unusual magnetic behavior of α‐Fe 2 O 3 : Rice‐ (a) and cube‐shaped (b) single‐crystalline α‐Fe 2 O 3 nanostructures (see microstructure images) are obtained by a new hydrothermal reaction route. Different magnetic anisotropies are observed for the rice‐ and cube‐shaped α‐Fe 2 O 3 nanocrystals. This behavior offers possibilities for technological applications of α‐Fe 2 O 3 with magnetic properties tailored by shape‐controlled synthesis.