## Treatise on Materials Science and Technology, Volume 2 |

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Page 236

This is essentially the “ coherence

BCS theory yields for the coherence

18hvf / kg T . ( Uf = Fermi velocity ) which is 102 - 104 Å for most superconductors

.

This is essentially the “ coherence

**length**” introduced by Pippard ( 1950 ) . TheBCS theory yields for the coherence

**length**of a pure superconductor : Šo = 0 .18hvf / kg T . ( Uf = Fermi velocity ) which is 102 - 104 Å for most superconductors

.

Page 306

6a ( Geller and Gilleo , 1957 ) , the edge of the triangular dodecahedron marked

with a single dot has a

. 81 Å , the edge with triple dots , a

6a ( Geller and Gilleo , 1957 ) , the edge of the triangular dodecahedron marked

with a single dot has a

**length**of 2 . 68 Å , the edge with double dots , a**length**of 2. 81 Å , the edge with triple dots , a

**length**of 2 . 87 Å , and the edge with four ...Page 307

From Geschwind , 1961 , courtesy of American Institute of Physics . dot has a

6c , the edge of the tetrahedron marked with a single dot has a

From Geschwind , 1961 , courtesy of American Institute of Physics . dot has a

**length**of 2 . 68 Å , and the edge with double dots has a**length**of 2 . 99 Å . In Fig .6c , the edge of the tetrahedron marked with a single dot has a

**length**of 3 .### What people are saying - Write a review

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### Contents

Epitaxial Interfaces | 3 |

Thin Films | 15 |

Semiinfinite Overgrowths | 52 |

Copyright | |

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### Common terms and phrases

angle anisotropy approximation assumed atoms average axis c-site calculated cations coherent compounds concentration condition considerations constants contribution corresponding crystal curve decreases defect density dependence determined diffusion direction discussed dislocations displacement effect elastic elastic scattering electron energy equation et al experimental experiments factor field flux flux lines follows force function garnets given gives important impurity increases interaction interface ions lattice limit magnetic materials measured Merwe metal method misfit mode neutron normal observed obtained optical parameter phase phonon Phys plane position potential present processes properties range reference region resolution respectively sample scattering cross section shown shows single solid solution space strain stress structure substrate superconducting surface Table temperature tetrahedral theory thermal thickness transition unit values vector wave X-ray