Abstract
Recently, nonvolume conserving or non-Joulian magnetostriction has been reported in Fe-Ga alloys [H. D. Chopra and M. Wuttig, Nature (London) 521, 340 (2015); H. D. Chopra and M. Wuttig, Nature (London) 538, 416 (2016)] that increase their volume by expanding in magnetic fields. Here, we report a complementary set of contracting non-Joulian crystals (Fe-Ge, Fe-Al) that decrease their volume. Results provide the critical compositional degree of freedom necessary for designing new alloys (beyond the initially reported Fe-Ga alloys) and establish this family of functional materials based on non-Joulian magnetostriction.
- Received 23 March 2017
- Revised 19 April 2017
DOI:https://doi.org/10.1103/PhysRevB.95.174425
©2017 American Physical Society