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arXiv · 2111.15381

Competition Between Exchange and Magnetostatic Energies in Domain Pattern Transfer from BaTiO$_3$(111) to Ni Thin Film

Kévin J. A. Franke·Colin Ophus·Andreas K. Schmid·Christopher H. Marrows
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Abstract

We use spin polarized low energy electron microscopy to investigate domain pattern transfer in a multiferroic heterostructure consisting of a $(111)$-oriented BaTiO$_{\mathrm{3}}$ substrate and an epitaxial Ni film. After in-situ thin film deposition and annealing through the ferroelectric phase transition, interfacial strain transfer from ferroelastic domains in the substrate and inverse magnetostriction in the magnetic thin film introduce a uniaxial in-plane magnetic anisotropy that rotates by $60^{\circ}$ between alternating stripe regions. We show that two types of magnetic domain wall can be initialized in principle. Combining experimental results with micromagnetic simulations we show that a competition between the exchange and magnetostatic energies in these domain walls have a strong influence on the magnetic domain configuration.

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Kévin J. A. Franke, Colin Ophus, Andreas K. Schmid, Christopher H. Marrows. 2021-11-30. Competition Between Exchange and Magnetostatic Energies in Domain Pattern Transfer from BaTiO$_3$(111) to Ni Thin Film. https://arxiv.org/abs/2111.15381

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