The atomic structure of large-angle grain boundaries $Σ5$ and $Σ13$ in ${\rm YBa_2Cu_3O_{7-δ}}$ and their transport properties

Details The atomic structure of large-angle grain boundaries $Σ5$ and $Σ13$ in ${\rm YBa_2Cu_3O_{7-δ}}$ and their transport properties The atomic structure of large-angle grain boundaries $Σ5$ and $Σ13$ in ${\rm YBa_2Cu_3O_{7-δ}}$ and their transport properties

2001-03-12

arxiv.org/abs/cond-mat/0103261v1

Physics

Condensed Matter

Superconductivity

10 pages, 2 figures

Scientific paper

10.1103/PhysRevB.64.224525

We present the results of a computer simulation of the atomic structures of large-angle symmetrical tilt grain boundaries (GBs) $\Sigma 5$ (misorientation angles $\q{36.87}{^{\circ}}$ and $\q{53.13}{^{\circ}}$), $\Sigma 13$ (misorientation angles $\q{22.62}{^{\circ}}$ and $\q{67.38}{^{\circ}}$). The critical strain level $\epsilon_{crit}$ criterion (phenomenological criterion) of Chisholm and Pennycook is applied to the computer simulation data to estimate the thickness of the nonsuperconducting layer ${\rm h_n}$ enveloping the grain boundaries. The ${\rm h_n}$ is estimated also by a bond-valence-sum analysis. We propose that the phenomenological criterion is caused by the change of the bond lengths and valence of atoms in the GB structure on the atomic level. The macro- and micro- approaches become consistent if the $\epsilon_{crit}$ is greater than in earlier papers. It is predicted that the symmetrical tilt GB $\Sigma5$ $\theta = \q{53.13}{^{\circ}}$ should demonstrate a largest critical current across the boundary.

Affiliated with

Also associated with

No associations

Rating

The atomic structure of large-angle grain boundaries $Σ5$ and $Σ13$ in ${\rm YBa_2Cu_3O_{7-δ}}$ and their transport properties does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The atomic structure of large-angle grain boundaries $Σ5$ and $Σ13$ in ${\rm YBa_2Cu_3O_{7-δ}}$ and their transport properties, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The atomic structure of large-angle grain boundaries $Σ5$ and $Σ13$ in ${\rm YBa_2Cu_3O_{7-δ}}$ and their transport properties will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-401482