Effects of nanostructuring and substrate symmetry on antiferromagnetic domain structure in LaFeO 3 thin films

E. Folven; A. Scholl; A. Young; S. T. Retterer; J. E. Boschker; T. Tybell; Y. Takamura; J. K. Grepstad

doi:10.1103/PhysRevB.84.220410

Effects of nanostructuring and substrate symmetry on antiferromagnetic domain structure in LaFeO ₃ thin films

E. Folven, A. Scholl, A. Young, S. T. Retterer, J. E. Boschker, T. Tybell, Y. Takamura, J. K. Grepstad

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

27 Scopus citations

Abstract

The antiferromagnetic domain structure in LaFeO ₃ thin-film epilayers grown on La _0.7Sr _0.3MnO ₃ is imaged combining linearly polarized x-ray-absorption spectroscopy with photoemission electron microscopy. Detailed analysis of polarization-dependent domain contrast from magnetic dichroism reveals two sets of symmetrically different antiferromagnetic easy axes in the LaFeO ₃ layer along the in-plane 110 and 100 crystalline axes (pseudocubic notation), respectively. We show that extended antiferromagnetic domains can be stabilized selectively for nanowires defined in this perovskite thin-film system along either orientation of the easy axes. The results demonstrate how the equilibrium domain structure of thin-film nanoscale antiferromagnets depend on a combination of substrate symmetry, nanowire dimensions, and in-plane crystalline orientation.

Original language	English
Article number	220410
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	84
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.84.220410
State	Published - Dec 28 2011

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title = "Effects of nanostructuring and substrate symmetry on antiferromagnetic domain structure in LaFeO 3 thin films",

abstract = "The antiferromagnetic domain structure in LaFeO 3 thin-film epilayers grown on La 0.7Sr 0.3MnO 3 is imaged combining linearly polarized x-ray-absorption spectroscopy with photoemission electron microscopy. Detailed analysis of polarization-dependent domain contrast from magnetic dichroism reveals two sets of symmetrically different antiferromagnetic easy axes in the LaFeO 3 layer along the in-plane 110 and 100 crystalline axes (pseudocubic notation), respectively. We show that extended antiferromagnetic domains can be stabilized selectively for nanowires defined in this perovskite thin-film system along either orientation of the easy axes. The results demonstrate how the equilibrium domain structure of thin-film nanoscale antiferromagnets depend on a combination of substrate symmetry, nanowire dimensions, and in-plane crystalline orientation.",

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AU - Folven, E.

AU - Scholl, A.

AU - Young, A.

AU - Retterer, S. T.

AU - Boschker, J. E.

AU - Tybell, T.

AU - Takamura, Y.

AU - Grepstad, J. K.

PY - 2011/12/28

Y1 - 2011/12/28

N2 - The antiferromagnetic domain structure in LaFeO 3 thin-film epilayers grown on La 0.7Sr 0.3MnO 3 is imaged combining linearly polarized x-ray-absorption spectroscopy with photoemission electron microscopy. Detailed analysis of polarization-dependent domain contrast from magnetic dichroism reveals two sets of symmetrically different antiferromagnetic easy axes in the LaFeO 3 layer along the in-plane 110 and 100 crystalline axes (pseudocubic notation), respectively. We show that extended antiferromagnetic domains can be stabilized selectively for nanowires defined in this perovskite thin-film system along either orientation of the easy axes. The results demonstrate how the equilibrium domain structure of thin-film nanoscale antiferromagnets depend on a combination of substrate symmetry, nanowire dimensions, and in-plane crystalline orientation.

AB - The antiferromagnetic domain structure in LaFeO 3 thin-film epilayers grown on La 0.7Sr 0.3MnO 3 is imaged combining linearly polarized x-ray-absorption spectroscopy with photoemission electron microscopy. Detailed analysis of polarization-dependent domain contrast from magnetic dichroism reveals two sets of symmetrically different antiferromagnetic easy axes in the LaFeO 3 layer along the in-plane 110 and 100 crystalline axes (pseudocubic notation), respectively. We show that extended antiferromagnetic domains can be stabilized selectively for nanowires defined in this perovskite thin-film system along either orientation of the easy axes. The results demonstrate how the equilibrium domain structure of thin-film nanoscale antiferromagnets depend on a combination of substrate symmetry, nanowire dimensions, and in-plane crystalline orientation.

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Effects of nanostructuring and substrate symmetry on antiferromagnetic domain structure in LaFeO ₃ thin films

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