Process for producing ferrite single crystals
US4382839A · kind A · utility
1Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1981 |
| Grant date | May 10, 1983 |
| Priority date | — |
| Expiry date | Sep 14, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B29/26
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A new method for preparation of Mn-Zn or Ni-Zn type ferrite single crystals. The ferrite materials are provided in a lower portion of a crucible and completely dissolved. The crucible is moved within a predetermined atmosphere of temperature gradient. A solid which is equilibrium in composition to the ferrite materials is supplied into the crucible while the dissolved ferrite materials are crystallizing from the lower extremity while a liquid-phase zone is maintained constant in depth. Ferrite single crystals of at least about 800 mm in length are grown which are homogeneous in composition throughout their length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.