Influence of B site substituent Ti on the structure and thermophysical properties of A2B2O7-type pyrochlore Gd2Zr2O7

X-ray diffraction and Raman spectroscopy on Gd2(Ti2−yTey)O7 prepared at high pressure and high temperature

“…Applications arise, for example, as candidate for radioactive waste disposal and nuclear engineering [5] and potential electrolytes in solid-oxide fuel cells in pyrochlore compounds with intrinsic ionic conduction [6]. The crystal structure of pyrochlores has been described in different ways by many authors [7][8][9][10]. Most of these descriptions consider the coordination polyhedra around the A and B cations: the atomic arrangement is completely specified except for the x positional parameter for the 48f oxygen site, which defines the displacement from the ideal fluorite structure.…”

Phase Composition, Thermal Conductivity, and Toughness of TiO2-Doped, Er2O3-Stabilized ZrO2 for Thermal Barrier Coating Applications

“…The ability of phonon scattering has a relationship with the phonon scattering coefficient (Γ), which is determined by the difference of atomic mass (Γ M ) and that of the ionic radius (Γ δ ). Considering the effect of the anharmonicity in a solid solution expressed by an influence factor ε, the relation of Γ, Γ M , and Γ δ can be expressed in the following equations [27,33,34]:…”

Thermo-physical properties of rare-earth hexaaluminates LnMgAl11O19 (Ln: La, Pr, Nd, Sm, Eu and Gd) magnetoplumbite for advanced thermal barrier coatings

“…Spectra of the six ceramics in this study exhibit homologous vibration bands, which is consistent with XRD results verifying the pure magnetoplumbite LaMgAl 11 magnetoplumbite structure as a result of the decreased ratio of the cation radius r(Ln)/r(Al). 26 …”