Martí Gich

TL;DR: The simple composition of this new ferromagnetic ferroelectric oxide and the discovery of a robust path for its thin film growth by using suitable seed layers may boost the exploitation of ε-Fe2 O3 in novel devices.

TL;DR: In this article, the crystal and magnetic structures of orthorhombic e-Fe2O3 have been studied by simultaneous Rietveld refinement of X-ray and neutron powder-diffraction data in combination with Mossbauer spectroscopy, as well as magnetization and heat capacity measurements.

TL;DR: In this article, the e-Fe2O3 nanoparticles embedded in a SiO2 matrix have been synthesized by sol−gel chemistry and high temperature heat treatments, and they are stable up to ∼1600 K.

TL;DR: In this paper, the authors measured the dielectric permittivity as a function of temperature, frequency and magnetic field and found that, coinciding with the transition from collinear ferrimagnetic ordering to an incommensurate magnetic state occurring at about 100 K, there is an abrupt change (about 30%) of permittivities, suggesting the existence of magnetoelectric coupling in this material.

TL;DR: In this paper, the magnetic properties of nanoparticles are investigated by x-ray magnetic circular dichroism and it is shown that the Fe orbital moment is considerably high, explaining the origin of the large coercivity of this material at room temperature.