Grain Boundaries and Anti-Phase Boundaries in Ba1.015Zr0.8-xCe0.2YxO3 Proton Conductors

Structural phase transformations in metallic grain boundaries.

Structural transformations at interfaces are of profound fundamental interest as complex examples of phase transitions in low-dimensional systems. Despite decades of extensive research, no compelling evidence exists for structural transformations in high-angle grain boundaries in elemental systems. Here we show that the critical impediment to observations of such phase transformations in atomis...

Grain Boundaries in Polycrystalline Alumina

THE EFFECT OF STRAIN ON GRAINS AND GRAIN BOUNDARIES IN YBa2Cu3O7−δ COATED CONDUCTORS (POSTPRINT)

The role of grains and grain boundaries in producing reversible strain effects on the transport current critical current density (Jc) of YBa2Cu3O7−δ (YBCO) coated conductors that are produced with metal–organic deposition (MOD) was investigated. The strain (ε) dependence of Jc for full-width coated conductors is compared with that for samples in which the current transport was limited to a few ...

Electrical Properties of Grain Boundaries

The electrical properties of grain boundaries are very different in insulators, semiconductors and metals. We present them briefly in the case of insulators and semiconductors and with more details in the case of metals.

Extending phase field models of grain boundaries to three dimensions

There have been a number of approaches to the modeling of grain boundaries, all of which have limitations and advantages. Of particular interest are phase field models, which have gained popularity as their ability to compute realistic microstructures has been demonstrated. For an overview of this approach, the reader is recommended some of the review articles on this topic. [1] A basic model o...