Revisiting the Temperature Dependent Ionic Conductivity of Yttria Stabilized Zirconia (YSZ)

Low-Temperature Superionic Conductivity in Strained Yttria-Stabilized Zirconia

We report very high lateral ionic conductivities in epitaxial cubic yttria-stabilized zirconia synthesized on single crystal SrTiO3 and MgO substrates by reactive direct current magnetron sputtering. Superionic conductivities (i.e., ionic conductivities of the order ~1 Ω -1 cm -1 ) are observed at 500 oC for 58-nm-thick films on MgO. Our results indicate a superposition of two parallel contribu...

Defect structure of yttria-stabilized zirconia and its influence on the ionic conductivity at elevated temperatures

The defect structure of cubic fluorite structured yttria-stabilized zirconia (ZrO2)12x(Y2O3)x has been investigated over the composition range 0.100(4)<x<0.241(10) and temperatures T(K) up to 2780~10! K, using single-crystal specimens. Analysis of neutron and x-ray diffraction data, including both Bragg and coherent diffuse scattering components, has identified three principal types of defects ...

Enhancing ionic conductivity of bulk single-crystal yttria-stabilized zirconia by tailoring dopant distribution

We present an ab initio–based kinetic Monte Carlo model for ionic conductivity in single-crystal yttriastabilized zirconia. Ionic interactions are taken into account by combining density functional theory calculations and the cluster expansion method and are found to be essential in reproducing the effective activation energy observed in experiments. The model predicts that the effective energy...

Morphology and thermal conductivity of yttria-stabilized zirconia coatings

An electron beam directed vapor deposition method was used to grow 7 wt.% Y2O3–ZrO2 (7YSZ) coatings and the effects of substrate rotation upon the coating porosity, morphology, texture, and thermal conductivity were explored. As the rotation rate was increased, the texture changed from Æ111æ to Æ100æ. Under stationary deposition, the coatings were composed of straight columns, while low-frequen...

Ionic conductivity and thermal stability of magnetron-sputtered nanocrystalline yttria- stabilized zirconia