Hydrothermal synthesis of monodisperse α-Fe2O3 hexagonal platelets--颗粒学报PARTICUOLOGY

Peng, D., Beysen, S., Li, Q., Sun, Y., & Yang, L. (2010). Hydrothermal synthesis of monodisperse α-Fe2O3 hexagonal platelets. Particuology, 8(4), 386-389. https://doi.org/10.1016/j.partic.2010.05.003

Hydrothermal synthesis of monodisperse α-Fe₂O₃ hexagonal platelets

Dengfeng Peng ^{a b}, Sadeh Beysen ^a *, Qiang Li ^a, Yanfei Sun ^a, Linyu Yang ^a

a School of Physics Science and Technology, Xinjiang University, Urumqi 830046, China
b Functional Materials Research Laboratory, Tongji University, Shanghai 200092, China

10.1016/j.partic.2010.05.003

Volume 8, Issue 4, August 2010, Pages 386-389

Received 1 December 2009, Revised 29 December 2009, Accepted 13 May 2010, Available online 23 July 2010.

E-mail: baishan@xju.edu.cn

Highlights

Abstract

Uniformly sized α-Fe₂O₃ hexagonal platelets were synthesized by a hydrothermal process using Fe(OH)₃ suspension and large amount of NaOH. The reaction products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), and a vibrating sample magnetometer (VSM). The results show that the hexagonal platelets are fine, monodisperse and consisting of single-crystals. The magnetic hysteresis (M–H) curve of the samples measured at room temperature indicates that the α-Fe₂O₃ micro-platelets exhibit ferromagnetic behaviors with relatively low coercivity.

Graphical abstract

Keywords

Crystal growth; Magnetic materials; α-Fe₂O₃; Hexagonal platelets; Hydrothermal method

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