2013/08/21 by Kiran Singh, Marie-Bernadette Lepetit, Ch. Simon +8 · 18 citations
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Chemistry #Condensed matter physics #Dielectric #Ferroelectricity #Ferromagnetism #Landau theory #Magnetic and transport properties of perovskites and related materials #Magnetic field #Magnetization #Manganite #Multiferroics #Multiferroics and related materials #Phase transition #Physics #Polarization (electrochemistry) #Quantum mechanics #cond-mat.str-el
paper · pdf · doi:10.1088/0953-8984/25/41/416002
published in Journal of Physics Condensed Matter 25(41), 416002 (IOP Publishing)
arxiv created 2013/08/21 · openalex publication_date 2013/09/11 · arxiv updated 2015/06/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We performed magnetic and ferroelectric measurements, associated with Landau theory and symmetry analysis, in order to clarify the situation of the YMnO3 system, a classical example of type I multiferroics. We found that the only magnetic group compatible with all experimental data (neutron scattering, magnetization, polarization, dielectric constant, second harmonic generation) is the P6'(3) group. In this group a small ferromagnetic component along c is induced by the Dzyaloshinskii-Moriya interaction, and observed here in magnetization measurements. We found that the ferromagnetic and antiferromagnetic components can only be switched simultaneously, while the magnetic orders are functions of the polarization square and therefore insensitive to its sign.