| 摘要 |
PURPOSE:To improve the operation stability by using flat magnetic bubbles in accordance with high integration and high density and reducing the thickness of a spacer layer, the quantity of ion implantation to an ion implantation layer, and the thickness of a magnetic bubble transfer path layer. CONSTITUTION:In a minor loop part, a magnetic bubble transfer layer 14 whose thickness d2 is 500-3,000Angstrom is formed on an ion implantation layer 12. The ion implantation layer 12 is formed with 1X10<12>-1X10<14>ions/cm<2> with respect to the quality of ion implantation. A diameter (d) and a height (h) of magnetic bubbles using a magnetic film 11 are set to satisfy h<=0/8d, and flat magnetic bubbles B' are obtained. By this constitution, interaction between the magnetic bubble transfer path layer 14 and magnetic bubbles B' is strengthened, and the operation stability is improved. |
