Operational Characteristics of 103-Bit Garnet Y-Bar Shift Register

Abstract

The availability of uniaxial magnetic garnets has permitted fabrication of relatively high‐density (≈0.4×10⁺⁶ bits per square inch) propagating cylindrical domain devices. A shift register of 10³‐bit capacity has been built and tested. In the construction of the shift register a Y‐bar propagate circuit element and Gd_2.34Tb_0.66Fe₅O₁₂ garnet crystal have been used. Based on functional tests, performed at quasistatic speeds, sufficient operating margins relating to propagation along straight lines and around corners, as well as margins relating to bubble generation, have been obtained and are presented.