Polycrystalline thin film and method for preparing thereof, and superconducting oxide and method for preparation thereof
US6632539B1 · kind B1 · utility
22Cited by
18References
31Claims
0Family size
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Key dates
| Filing date | Jul 25, 2001 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | Jul 25, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/731
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The polycrystalline thin film is made of a composite oxide of a cubic crystal system which has a pyrochlore type crystalline structure of a composition represented as either AZrO or AHfO (A in the formula represents a rare earth element selected from among Y, Yb, Tm, Er, Ho, Dy, Eu, Gd, Sm, Nd, Pr, Ce and La) formed on the film forming surface of the polycrystalline substrate, wherein the grain boundary misalignment angle between the same crystal axes of different crystal grains in the polycrystalline thin film along a plane parallel to the film forming surface of the polycrystalline substrate are controlled within 30°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.