Noise and finite size effects in multiferroics with strong elastic interactions

Salje, E. K. H. and Ding, X. and Zhao, Z. (2013) Noise and finite size effects in multiferroics with strong elastic interactions. Applied Physics Letters, 102 (15). p. 152909. ISSN 0003-6951, ESSN: 1077-3118 DOI https://doi.org/10.1063/1.4802787

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Abstract

The size dependence of yield point assisted ferroelastic switching is dominated by the appearance of a minimum size where the domain switching by external strain is swamped by noise which is determined by internal jamming processes. The lower ferroelastic lateral cut-off size was found in computer simulations to be 200 × 202 unit cells for hard materials and 40 × 42 unit cells for soft materials. The corresponding length scales are 16 nm and 4 nm, respectively. These lengths are greater than the minimum length to sustain a twinned sample (∼1 nm). Elastic interactions modify the switching behavior of multiferroics at larger lengths but do not prevent elastic switching above these noise cut-offs.

Item Type:	Article
Additional Information:	©2013 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Uncontrolled Keywords:	2013AREP; IA66;
Subjects:	03 - Mineral Sciences
Divisions:	03 - Mineral Sciences
Journal or Publication Title:	Applied Physics Letters
Volume:	102
Page Range:	p. 152909
Identification Number:	https://doi.org/10.1063/1.4802787
Depositing User:	Sarah Humbert
Date Deposited:	06 Jul 2013 23:25
Last Modified:	08 Aug 2013 12:24
URI:	http://eprints.esc.cam.ac.uk/id/eprint/2824

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