Field-Induced Strain of Shape Memory Alloy Fe–31.2%Pd Using a Capacitance Method in a Pulsed Magnetic Field

摘要: A system for the simultaneous measurement of magnetization and magnetic strain, which is designed to be used in a pulsed field, has been developed. In this system, capacitor on sample its capacitance changes with displacement due strain field. The most significant feature that can measured simultaneously. It useful compare (magnetostriction) each other. Using we have studied precise field-induced (MFIS) martensite metallic compound Fe–31.2%Pd (at.%) at temperatures down 80 K phase, much lower than martensitic transformation temperature TM=230 K. Large MFIS under field time constant 6 ms, corresponds Hz frequency. means occurs even short-pulse fields.