Abstract
A 28-μm period, all chevron bubble memory using 6-μm diameter domains in Y <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1.32</inf> Sm <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">.38</inf> Lu <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">.38</inf> Ca <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">.92</inf> Fe <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4.08</inf> Ge <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">.92</inf> O <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">12</inf> was operated at 100 kHz from -45° to +100°C with suitably chosen pulse and drive field amplitudes. At high drive currents the minimum all-function bias range among 4 accessible storage loops in the major-track, minor loop organized memory increased from 12G at -45°C to 17G for a broad maximum about room temperature and then decreased to 6G at 100°C. The behavior of bias margins with temperature and drive-current amplitude is shown. The stretch, cut, and annihilation-pulse operating ranges decrease with increasing temperature. Delay tolerances for the annihilation and cut pulses are shown as a function of the temperature.
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