Shape and Magnetic Properties of Single‐Crystalline Hematite (α‐Fe₂O₃) Nanocrystals

Abstract

Unusual magnetic behavior of α-Fe2O3: Rice- (a) and cube-shaped (b) single-crystalline α-Fe2O3 nanostructures (see microstructure images) are obtained by a new hydrothermal reaction route. Different magnetic anisotropies are observed for the rice- and cube-shaped α-Fe2O3 nanocrystals. This behavior offers possibilities for technological applications of α-Fe2O3 with magnetic properties tailored by shape-controlled synthesis.