Magnetic thin film ferrite having a ferrite underlayer
US6037052A · kind A · utility
7Cited by
1References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1997 |
| Grant date | Mar 14, 2000 |
| Priority date | — |
| Expiry date | Jul 9, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic thin film includes a ferrite-containing underlayer and a ferrite-containing top layer. The composition of the underlayer differs from that of the top layer. During ex-situ annealing of the thin film structure, the underlayer inhibits diffusion of substrate atoms into the top layer. The composition of the underlayer relative to the top layer suppresses grain nucleation within the underlayer relative to the top layer at high temperatures and inhibits the nucleation of grains within the underlayer having undesirable composition, crystal structure, and orientation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.