2014/08/31 by M Ackermann, M. Ackermann, T Lorenz +5 · 1 citation
Materials Science · Physics and Astronomy · #Anisotropy #Crystal Structures and Properties #Dielectric #Heusler alloys: electronic and magnetic properties #Magnetoelectric effect #Multiferroics #Multiferroics and related materials #Phase diagram #Pyroelectricity #Symmetry (geometry) #cond-mat.str-el
paper · pdf · doi:10.1088/0953-8984/26/50/506002
published as J. Phys.: Condens. Matter 26, 506002 (2014) · 17 pages, 10 figures (updated to the weakly revised version that has been accepted for publication)
openalex publication_date 2014/11/24 · arxiv created 2014/11/28 · arxiv updated 2014/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The compounds A(2)[FeCl(5)(H(2)O)] with A = K, Rb, Cs are identified as new linear magnetoelectric (non-multiferroic) materials. We present a detailed investigation of their linear magnetoelectric properties through measurements of pyroelectric currents, dielectric constants and magnetization. The anisotropy of the linear magnetoelectric effect of the K-based and Rb-based compound is consistent with the magnetic point group m'm'm', already reported in literature. A symmetry analysis of the magnetoelectric effect of the Cs-based compound allows us to determine the magnetic point group mmm' and to develop a model for its magnetic structure. In addition, magnetic-field versus temperature phase diagrams are derived and compared to the closely related multiferroic (NH(4))(2)[FeCl(5)(H(2)O)].