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ISSN 2071-0194   Ukr. J. Phys. 2015, Vol. 60, N 7, p.627-633
doi:10.15407/ujpe60.07.0627   Paper

Eliseev E.A.

Institute for Problems of Materials Science, Nat. Acad. of Sci. of Ukraine
(3, Krzhizhanovs’kyi Str., Kyiv 03142, Ukraine; e-mail: eugene.a.eliseev@gmail.com)

The Structure of a 180-Degree Domain Wall near the Surface of Ferroics

Section: Solid Matter
Language: English

Abstract: We consider the influence of a built-in surface field on the 180-degree domain wall profile in primary ferroics within the Landau–Ginsburg–Devonshire phenomenological approach. The built-in surface field can be caused by various physical mechanisms for ferroelastic, ferroelectric, and antiferromagnetic media. For instance, it can be a component of the intrinsic surface stress tensor for ferroelastics with order parameter as a component of the strain tensor. We predict the effect of domain wall bending near the surface caused by the built-in field and derived the corresponding approximate analytical expressions.
Key words: ferroics, phenomenological approach, domain wall bending, built-in surface field.