Antiferromagnetic Domain Reconfiguration in Embedded LaFeO3 Thin Film Nanostructures
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- 作者：Erik Folven ; Thomas Tybell ; Andreas Scholl ; Anthony Young ; Scott T. Retterer ; Yayoi Takamura ; Jostein K. Grepstad
- 刊名：Nano Letters
- 出版年：2010
- 出版时间：November 10, 2010
- 年：2010
- 卷：10
- 期：11
- 页码：4578-4583
- 全文大小：427K
- 年卷期：v.10,no.11(November 10, 2010)
- ISSN：1530-6992
文摘
Using photoemission electron microscopy in combination with X-ray magnetic linear dichroism, we report reconfiguration upon nanostructuring of the antiferromagnetic domain structure in epitaxial LaFeO3 thin films. Antiferromagnetic (AFM) nanoislands were synthesized using a dedicated process, devised to define nanostructures with magnetic order embedded in a paramagnetic matrix. Significant impact on the AFM domain configuration was observed. Extended domains were found to form along edges parallel to the in-plane 100 crystalline axes of the cubic substrate, with their AFM spin axis parallel to the edge. No such edge-imposed domain configuration was found for nanoislands defined with the edges at 45° with the in-plane crystalline axes. Epitaxial constraints on the film crystalline structure appear to play an important role in the formation of the edge-bound extended AFM domains. The data indicate a magnetostatic origin of this domain reconfiguration.