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Ethanol‐Assisted Hydrothermal Synthesis and Characterization of BiFeO 3 Nanopowders
Author(s) -
Chen Zhiwu,
Wu Yongpeng,
Hu Jianqiang
Publication year - 2013
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12296
Subject(s) - materials science , hydrothermal circulation , chemical engineering , magnetization , hydrothermal synthesis , ferromagnetism , ethanol , nanoparticle , solvent , nanotechnology , chemistry , condensed matter physics , magnetic field , organic chemistry , physics , quantum mechanics , engineering
Well‐crystallized pure BiFeO 3 nanopowders were successfully synthesized at the temperature as low as 120°C by an ethanol‐assisted hydrothermal process. In this synthesis, the composition of the solvent played important roles in the formation of pure BiFeO 3 . The BiFeO 3 nanopowders synthesized with 4:3 ethanol/water ratio mainly consists of cubic structures with size from 50 to 150 nm. Zero‐field‐cooled ( ZFC ) and field‐cooled ( FC ) magnetization measurements indicated that pure BiFeO 3 nanopowders showed a spin‐glass transition below the freezing temperature. Moreover, the BiFeO 3 nanopowders exhibited ferromagnetic order at room temperature.