Magnetic and magnetocaloric properties of TbMnO3 and Tb0.67R0.33MnO3 (R=Dy, Y, and Ho) bulk powders

Exploring pure and RE co-doped (Eu3+, Tb3+ and Dy3+) gadolinium scandate: Luminescence behaviour and dynamics of energy transfer

“…Rare earth scandates (REScO 3 ) adopt such orthorhombic structure and the co-ordination polyhedra for the rare earth cation in REScO 3 can be best described by 8 instead of 12 [9]. Orthorhombically distorted perovskites exhibit potential applications like TbMnO 3 and BiFeO 3 as multiferroics [10,11], ScFeO 3 as ferromagnet etc [12].…”

Dopant-mediated structural and magnetic properties of TbMnO3

“…At ambient conditions, the perovskite RMnO 3 crystalizes in either orthorhombic or hexagonal phases. 26,27 With large ionic size R (such as in the cases of Pr, Nd, Tb and Dy) the orthorhombic phase (Pbnm) is found to be stable (Fig 1(a)), while with small ionic size R (such as in Ho, Er, Yb, and Lu) RMnO 3 stabilizes in the FIG. 1: (Color online) (a) Crystal structure of perovskite rare-earth manganites TbMnO3 consists of corner sharing MnO6 octahedra, with the Mn ions in the center of the octahedral.…”

“…The lattice parameters for pure TbMnO 3 are found to be in agreement with available computational and experimental data. 26,27,38 The slight change in lattice parameters due to the doping can be understood in terms of the ionic size mismatch between host (Tb) and dopants (Gd, Dy and Ho). For instance, the lattice constant was expected to decrease when Ho 3+ of smaller ionic radius (107.2 pm in 9-coordination) is substituted in the site of Tb 3+ with larger ionic radius (109.5 pm in 9-coordination).…”

Thermomagnetic Properties of Dy0.9Ho0.1MnO3 Multiferroics

“…Nevertheless, the primary reasons behind the origin of MCE are the intrinsic structural modifications or perturbations that occur due to the interaction between Dy 3+ /Ho 3+ and Mn 3+ sublattice which implicitly incur changes in the magnetic symmetry. [ 15 ] Comparative analysis of the obtained results of this study with those of some multiferroic oxide materials as well as CMR materials [ 1,31 ] is shown in Table 1 . The results suggest that the magnetically driven thermal properties of the current sample are quite comparable with those of existing application oriented materials.…”