Energy harvesting using martensite variant reorientation mechanism in a NiMnGa magnetic shape memory alloy

I. Karaman, B. Basaran, H. E. Karaca, A. I. Karsilayan, Y. I. Chumlyakov

Research output: Contribution to journalArticlepeer-review

164 Scopus citations

Abstract

Magnetic shape memory alloys demonstrate significant potential for harvesting waste mechanical energy utilizing the Villari effect. In this study, a few milliwatts of power output are achieved taking advantage of martensite variant reorientation mechanism in Ni51.1 Mn24 Ga24.9 single crystals under slowly fluctuating loads (10 Hz) without optimization in the power conversion unit. Effects of applied strain range, bias magnetic field, and loading frequency on the voltage output are revealed. Anticipated power outputs under moderate frequencies are predicted showing that the power outputs higher than 1 W are feasible.

Original languageEnglish
Article number172505
JournalApplied Physics Letters
Volume90
Issue number17
DOIs
StatePublished - 2007

Bibliographical note

Funding Information:
This work was supported by the U.S. Army Research Office, Contract No. W911NF-06-1-0319, the U.S. Civilian Research and Development Foundation, Grant No. RUE1-2690-TO-05.

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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