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Compared to thermally controlled shape memory alloy, magnetically controlled shape memory alloys appear to offer
greater advantages. They not only respond faster to the external stimulus (changing magnetic field), but also appear to produce greater strains than those observed with the ordinary MSM or ordinary
magnetostrictive materials. The larger strain is attributed to the realignment of the internal magnetic dipoles and subsequent phase transformation under the influence of the applied magnetic field. Fields
as low as 0.6 tesla have generated high strains. |
