Tailoring Spin Textures in Complex Oxide Micromagnets.
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.
Department of Materials Science and Engineering, University of California-Davis , Davis, California 95616, United States.
Michael S
MS
Lee
Department of Materials Science and Engineering, University of California-Davis , Davis, California 95616, United States.
Thomas A
TA
Wynn
Department of Electronics and Telecommunications, Norwegian University of Science and Technology , NO-7491 Trondheim, Norway.
Erik
E
Folven
Department of Materials Science and Engineering, University of California-Davis , Davis, California 95616, United States.
Rajesh V
RV
Chopdekar
Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94703, United States.
Andreas
A
Scholl
Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94703, United States.
Anthony T
AT
Young
Center for Nanophase Materials Sciences, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.
Scott T
ST
Retterer
Department of Electronics and Telecommunications, Norwegian University of Science and Technology , NO-7491 Trondheim, Norway.
Jostein K
JK
Grepstad
Department of Materials Science and Engineering, University of California-Davis , Davis, California 95616, United States.
Yayoi
Y
Takamura
X-ray photoemission electron microscopy; complex oxides; magnetic anisotropy; micromagnetics