Contracting non-Joulian magnets

Tanvir M. Saurav, Marcus L. Forst, James A. Boligitz, and Harsh Deep Chopra
Phys. Rev. B 95, 174425 – Published 18 May 2017

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.

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  • Received 23 March 2017
  • Revised 19 April 2017

DOI:https://doi.org/10.1103/PhysRevB.95.174425

©2017 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Tanvir M. Saurav1, Marcus L. Forst1,2, James A. Boligitz1, and Harsh Deep Chopra1,*

  • 1Materials Genomics Laboratory, and Laboratory for Quantum Materials & Devices, Mechanical Engineering Department, Temple University, Philadelphia, Pennsylvania 19122, USA
  • 2Physics Department, Temple University, Philadelphia, Pennsylvania 19122, USA

  • *Corresponding author: chopra@temple.edu

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Vol. 95, Iss. 17 — 1 May 2017

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