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Fabrication of Fe 3 O 4 octahedra by a triethanolamine‐assisted hydrothermal process
Author(s) -
Liang Jun,
Li Li,
Luo Min,
Wang Yuan
Publication year - 2011
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201000485
Subject(s) - triethanolamine , hydrothermal circulation , octahedron , hydrate , coercivity , scanning electron microscope , materials science , crystallography , hydrothermal synthesis , chemistry , analytical chemistry (journal) , crystal structure , chemical engineering , composite material , condensed matter physics , organic chemistry , physics , engineering
Octahedral Fe 3 O 4 microcrystals were synthesized using a triethanolamine‐assisted route under hydrothermal conditions. The chemical compositions and morphologies of the as‐prepared samples were characterized in detail by X‐ray diffraction (XRD) and scanning electron microscopy (SEM). During the hydrothermal process for the preparation of Fe 3 O 4 octahedra, the possible mechanism was discussed to elucidate the formation of the octahedral Fe 3 O 4 microcrystals. Triethanolamine and hydrazine hydrate play important roles in the formation of the final products. The magnetic property of sample was evaluated on a vibrating sample magnetometer (VSM) at room temperature. The values of saturation magnetization and coercivity of octahedral Fe 3 O 4 are about 103 emu/g and 157 Oe, respectively. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)