Pressure-induced structural transition in LuFe2O4: towards a new charge ordered state

Phys Rev Lett. 2010 Dec 3;105(23):237203. doi: 10.1103/PhysRevLett.105.237203. Epub 2010 Dec 3.

Abstract

The electronic ferroelectric lutetium ferrite (LuFe(2)O(4)) was studied by x-ray diffraction as a function of pressure. Pressure is shown to induce an irreversible rhombohedral to orthorhombic transition leading to a supercell determined by the combination of electron and synchrotron x-ray diffraction. This new configuration is proposed to be charge ordered in agreement with the results of resistivity measurements.