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Conferences > UP > 2014 > 07.Mon.P1 > 07.Mon.P1.41

Phase Transitions in Co-Doped NiMnGa Magnetic Shape Memory Alloys Probed by Coherent Phonons

Martin Schubert, Jan Mayer, Mike Hettich, Hanjo Schäfer, Aleksej Laptev, Moritz Merklein, Chuan He, Martin Großmann, Oliver Ristow, Yuansu Luo, Vitalyi Gusev, Jure Demsar, Mikhail Fonin, Konrad Samwer, and Thomas Dekorsy

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Abstract

We investigate undoped and Co-doped NiMnGa magnetic shape memory alloys by ultrafast spectroscopy. The temperature dependence of collective modes is explained on the base of a charge-density-wave excitation shining new light on the phase transition.

© 2014 Optical Society of America

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