Magnetic LPE Crystalline Films for Small Bubble Diameter Cylindrical-Domain Memory Applications.
Abstract
Rare-earth iron garnet crystalline compositions were formulated, films deposited by liquid-phase epitaxy, and magnetic evaluation measurements performed. The results of the magnetic property experiments were used to select improved rare-earth iron garnet compositions and film deposition conditions for small-bubble-diameter magnetic memory applications. Representative results of delivered samples are given in tabular form in the appendix. During this report period, samarium thulium-, yttrium samarium thulium-, yttrium samarium lutetium-, and yttrium europium thulium gallium iron garnet films were grown and their static magnetic properties evaluated. Yttrium samarium lutetium calcium germanium iron garnet small-bubble-diameter films were prepared and evaluated for comparison of their magnetic properties. In addition to the static magnetic property experiments, dynamic measurements were performed on (LaEuTm)3 (FeGa)5O12 and (SmTm)3 (FeGal)5O12 films. Mobilities of 233 and 140 cm/sec/Oe, respectively, were determined for representative samples. These mobility figures reveal that these two small-bubble-diameter compositions would operate at a half megabit data rate. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1977
- Accession Number
- ADA048197
Entities
People
- Alexander B. Smith
- M. Kestigian
- W. R. Bekebrede
Organizations
- Sperry Corporation