Tailoring Spin Textures in Complex Oxide Micromagnets

Michael S. Lee; Thomas A. Wynn; Erik Folven; Rajesh V. Chopdekar; Andreas Scholl; Anthony T. Young; Scott T. Retterer; Jostein K. Grepstad; Yayoi Takamura

doi:10.1021/acsnano.6b03770

Tailoring Spin Textures in Complex Oxide Micromagnets

Michael S. Lee, Thomas A. Wynn, Erik Folven, Rajesh V. Chopdekar, Andreas Scholl, Anthony T. Young, Scott T. Retterer, Jostein K. Grepstad, Yayoi Takamura

Center for Nanophase Matls Sciences

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Engineered topological spin textures with submicron dimensions in magnetic materials have emerged in recent years as the building blocks for various spin-based memory devices. Examples of these magnetic configurations include magnetic skyrmions, vortices, and domain walls. Here, we show the ability to control and characterize the evolution of spin textures in complex oxide micromagnets as a function of temperature through the delicate balance of fundamental materials parameters, micromagnet geometries, and epitaxial strain. These results demonstrate that in order to fully describe the observed spin textures, it is necessary to account for the spatial variation of the magnetic parameters within the micromagnet. This study provides the framework to accurately characterize such structures, leading to efficient design of spin-based memory devices based on complex oxide thin films.

Original language	English
Pages (from-to)	8545-8551
Number of pages	7
Journal	ACS Nano
Volume	10
Issue number	9
DOIs	https://doi.org/10.1021/acsnano.6b03770
State	Published - Sep 27 2016

Funding

These experiments was obtained from the National Science Foundation (DMR 0747896 and 1411250) and the Research Council of Norway (Contract No. 190086/S10). The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy (DOE) under Contract No. DEAC02- 05CH11231. Patterning of the micromagnets was carried out at the Center for Nanophase Materials Sciences, which is a U.S. DOE Office of Science User Facility.

Funders	Funder number
National Science Foundation	0747896, DMR 0747896, 1411250
U.S. Department of Energy	DEAC02- 05CH11231
Office of Science
Basic Energy Sciences
Norges Forskningsråd	190086/S10

Keywords

X-ray photoemission electron microscopy
complex oxides
magnetic anisotropy
micromagnetics

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10.1021/acsnano.6b03770

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title = "Tailoring Spin Textures in Complex Oxide Micromagnets",

abstract = "Engineered topological spin textures with submicron dimensions in magnetic materials have emerged in recent years as the building blocks for various spin-based memory devices. Examples of these magnetic configurations include magnetic skyrmions, vortices, and domain walls. Here, we show the ability to control and characterize the evolution of spin textures in complex oxide micromagnets as a function of temperature through the delicate balance of fundamental materials parameters, micromagnet geometries, and epitaxial strain. These results demonstrate that in order to fully describe the observed spin textures, it is necessary to account for the spatial variation of the magnetic parameters within the micromagnet. This study provides the framework to accurately characterize such structures, leading to efficient design of spin-based memory devices based on complex oxide thin films.",

keywords = "X-ray photoemission electron microscopy, complex oxides, magnetic anisotropy, micromagnetics",

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AU - Lee, Michael S.

AU - Wynn, Thomas A.

AU - Folven, Erik

AU - Chopdekar, Rajesh V.

AU - Scholl, Andreas

AU - Young, Anthony T.

AU - Retterer, Scott T.

AU - Grepstad, Jostein K.

AU - Takamura, Yayoi

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AB - Engineered topological spin textures with submicron dimensions in magnetic materials have emerged in recent years as the building blocks for various spin-based memory devices. Examples of these magnetic configurations include magnetic skyrmions, vortices, and domain walls. Here, we show the ability to control and characterize the evolution of spin textures in complex oxide micromagnets as a function of temperature through the delicate balance of fundamental materials parameters, micromagnet geometries, and epitaxial strain. These results demonstrate that in order to fully describe the observed spin textures, it is necessary to account for the spatial variation of the magnetic parameters within the micromagnet. This study provides the framework to accurately characterize such structures, leading to efficient design of spin-based memory devices based on complex oxide thin films.

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Tailoring Spin Textures in Complex Oxide Micromagnets

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