21 citations · 42 across the 6 of their papers we have counts for
6 papers
Metallic Hydrogen: Experiments on Metastability
W. Ferreira, M. Moller, K. Linsuain +4
Molecular hydrogen was pressurized in a diamond anvil cell at temperatures between 5 and 83 K. At a sufficiently high pressure, estimated to be between 477 to 491 GPa, hydrogen bec…
Competing exchanges and spin-phonon coupling in Eu1-xRxMnO3 (R=Y,Lu)
D. A. Mota, Y. Romaguera Barcelay, P. B. Tavares +5
This work is focused on the phase diagrams and physical properties of Y-doped and Lu-doped EuMnO3. The differences in the corresponding phase boundaries in the (x,T) phase diagram…
Strong magneto-elastic coupling and polar properties in orthorhombic Eu1-xYxMnO3 manganite
J. Agostinho Moreira, A. Almeida, W. S. Ferreira +8
This work reports an experimental investigation of the magneto-elastic coupling and polarization character of magnetic phases of the orthorhombic Eu1-xYxMnO3 system at low temperat…
Polar properties of Eu0.6Y0.4MnO3 ceramics and their magnetic field dependence
J. Agostinho Moreira, A. Almeida, W. S. Ferreira +6
Eu1-xYxMnO3 exhibits, unlike other magnetoelectric systems, very distinctive features. Its magnetoelectric properties is driven by the magnetic spin of the Mn3+ ion, but they can b…
Re-analysing the phase sequence in Eu0.8Y0.2MnO3
J. Agostinho Moreira, A. Almeida, W. S. Ferreira +3
To clarify the controversy concerning the ferroelectricity of the lower temperature magnetic phases of Eu0.8Y0.2MnO3, hence its multiferroic character, we have studied in detail th…
Coupling between phonons and magnetic excitations in orthorhombic Eu_{1-x}Y_xMnO_3
J. Agostinho Moreira, A. Almeida, W. S. Ferreira +4
In this work we present a detailed study of the structural and lattice dynamic properties of Y-doped EuMnO3 ceramics (Eu1-xYxMnO3, with 0<x<0.55). A thorough analysis towards the c…