Repeated magnetic compensation behavior in the rare-earth alloyNd0.75Gd0.25Rh3B2with hexagonal structure and planar anisotropy

Magnetic Phases of Rare Earth Hexagonal Manganites

We describe the magnetic phases of hexagonal rare earth manganites RMnO3 using Landau theory. A minimal model based on four one-dimensional magnetic order parameters is developed.

Magnetic order of the hexagonal rare-earth manganite Dy0.5Y0.5MnO3

Joel S. Helton,1,* Deepak K. Singh,1,2 Harikrishnan S. Nair,3 and Suja Elizabeth4 1NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA 2Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, USA 3Jülich Centre for Neutron Science, Forschungszentrum Jülich, Outstation at FRM-II, D-8574...

In-Plane Magnetic Anisotropy in Hexagonal Systems

Magnetic orientation and magnetic anisotropy in paramagnetic layered oxides containing rare-earth ions.

The magnetic anisotropies and easy axes of magnetization at room temperature were determined, and the effects of rare-earth (RE) ions were clarified for RE-based cuprates, RE-doped bismuth-based cuprates and RE-doped Bi-based cobaltite regarding the grain orientation by magnetic field. The easy axis, determined from the powder orientation in a static field of 10 T, depended qualitatively on the...

Magnetic exchange interaction between rare-earth and Mn ions in multiferroic hexagonal manganites.

We report a study of magnetic dynamics in multiferroic hexagonal manganite HoMnO3 by far-infrared spectroscopy. The low-temperature magnetic excitation spectrum of HoMnO3 consists of magnetic-dipole transitions of Ho ions within the crystal-field split J = 8 manifold and of the triangular antiferromagnetic resonance of Mn ions. We determine the effective spin Hamiltonian for the Ho ion ground s...