Journal article
Influence of magnetic fields on structural martensitic transitions
XD Yang, PS Riseborough, KA Modic, RA Fisher, CP Opeil, TR Finlayson, JC Cooley, JL Smith, PA Goddard, AV Silhanek, JC Lashley
Philosophical Magazine | TAYLOR & FRANCIS LTD | Published : 2009
Abstract
We show evidence that a structural martensitic transition is related to significant changes in the electronic structure, as revealed in thermodynamic measurements made in high magnetic fields. The effect of the magnetic field is considered unusual as many influential investigations of martensitic transitions have emphasized that the structural transitions are primarily lattice dynamical and are driven by the entropy due to the phonons. We provide a theoretical framework, which can be used to describe the effect of the magnetic field on the lattice dynamics in which the field dependence originates from the dielectric constant.
Grants
Awarded by U.S. Department of Energy
Funding Acknowledgements
One of the authors (PSR) acknowledges support from the Office Basic Energy Sciences, US Department of Energy through grant No. DEFG02-01ER45872. PSR would also like to thank the Norwegian University of Science and Technology for the award of the Lars Onsager Professorship and their hospitality during the time this work was being performed. JCL thanks Peter Entel for insightful discussions. As we consider our friend and colleague J. L. Smith, we acknowledge that we have all benefited from his excellent scientific intuition, generous spirit, and unceasing grammatical editing.