Structural and Lattice-Dynamical Properties of Tb<sub>2</sub>O<sub>3</sub> under Compression: A Comparative Study with Rare Earth and Related Sesquioxides
Jordi Ibáñez, J. A. Sans, Vanesa Paula Cuenca-Gotor, Robert Oliva, O. Gomis, P. Rodríguez‐Hernández, Alfonso Muñoz, Ulises R. Rodríguez‐Mendoza, M. Velázquez, Philippe Veber, Cătălin Popescu, F. J. Manjón
Abstract
. These results are thoroughly compared and discussed in relation to those reported for rare earth and other related sesquioxides as well as with new calculations for selected sesquioxides. It is concluded that the evolution of the volume and bulk modulus of all the three phases of these technologically relevant compounds exhibit a nearly linear trend with respect to the third power of the ionic radii of the cations and that the values of the bulk moduli for the three phases depend on the filling of the f orbitals.
Topics & Concepts
ChemistryMonoclinic crystal systemBulk modulusPhase transitionRaman spectroscopyPhononSesquioxideLattice (music)Condensed matter physicsAb initioThermodynamicsCrystallographyCrystal structurePhysicsAcousticsOrganic chemistryOpticsHigh-pressure geophysics and materialsInorganic Chemistry and MaterialsElectronic and Structural Properties of Oxides