| 摘要 |
PURPOSE:To obtain a magnetic bubble detector in which a power and a dummy are not necessary and an output impedance and a noise are small by combining a soft magnetic thin film pattern and a loop-shaped conductor pattern arranged so as to cross to this and constituting the device so that the magnetic field of the bubble to pass through the soft magnetic thin film pattern can cross the conductor pattern. CONSTITUTION:On a crystal 10 for a magnetic bubble, a loop-shaped conductor pattern 12 is formed through a spacer 11, and on it, a stretcher 15 to line up plural soft magnetic thin film patterns 14 through an insulating layer 13 so as to cross to a conductor pattern 12 is formed. By the magnetic field change when a bubble, in which the loop-shaped conductor pattern 12 is stretched by the stretcher 15, passes, the voltage output occurs at the conductor pattern 12 and the bubble can be detected. The conductor pattern 12 is close to the surface of the bubble crystal 10, can efficiently pick up the magnetic field to come out from the bubble and the output impedance of the detector is also reduced.
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