Magnetically controlled high damping in ferromagnetic Ni52Mn24Ga24 single crystal

Wang, W. H.; Liu, G. D.; Wu, G. H.
September 2006
Applied Physics Letters;9/4/2006, Vol. 89 Issue 10, p101911
Academic Journal
An unusually high damping peak of 20% has been observed in Ni52Mn24Ga24 single crystals accompanying with martensitic transformation. The high damping capacity can be retained in the low-temperature martensite phase when a bias field of 0.4 T was applied along the measurement direction. The magnetically controlled high damping and adjustable martensitic-austenitic transformation temperature indicate a great potential of using Ni–Mn–Ga alloys as high damping or energy absorbing materials in a wide temperature range.


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