Growth and characterization of textured YBaCo2O5+δ thin films grown on (001)-SrTiO3 via DC magnetron sputtering

Galeano, V.; Arnache, O.; Supelano, G. I.; Vargas, Carlos Arturo Parra; Morán, O.

doi:10.1016/j.tsf.2016.04.020

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…As reported, YBCO 5+δ is antiferromagnetic for δ = 0.5 and weak ferromagnetic when δ deviates from 0.5 [21,24]. In general, the magnetization of YBCO is generally one order of magnitude lower than that of LSMO, i.e.…”

Section: Magnetic Behaviormentioning

confidence: 81%

Perpendicular magnetic anisotropy induced by La_2/3Sr_1/3MnO₃–YBaCo₂O_5+δ interlayer coupling

Han¹,

Chen²,

Wang³

et al. 2021

J. Phys. D: Appl. Phys.

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Heterostructure with a symmetry-mismatched interface provides a promising playground for the exploration of emergent phenomena. Herein, we report a systematic investigation on La2/3Sr1/3MnO3/YBaCo2O5+δ (LSMO/YBCO) grown on SrTiO3, a heterostructure formed by perovskite oxides of different symmetry. A high-resolution lattice image shows the formation of high-quality perovskite LSMO and A-site cation-ordered oxygen-deficient double perovskite YBCO, without any signatures of atomic reconfiguration at the interface. Surprisingly, the YBCO-buffered LSMO exhibits perpendicular magnetic anisotropy (PMA), though bare LSMO film is in-plane anisotropic. The PMA is robust, appearing even when the thickness of YBCO is only one unit cell. The typical anisotropy constant is ∼4 × 106 erg cm−3. X-ray absorption spectroscopy analysis reveals a preferential occupation of the d 3 z 2 − r 2 orbital compared with d x 2 − y 2 , which is confirmed by density functional theory calculations. This orbital reconstruction accounts for the PMA. The formation of a covalent bond between Mn and Co caged by different oxygen polyhedrons, an octahedron and a square pyramid, respectively, stabilizes the orbital reconstruction, resulting in anomalous spin orientation.

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Section: Magnetic Behaviormentioning

confidence: 81%

Perpendicular magnetic anisotropy induced by La_2/3Sr_1/3MnO₃–YBaCo₂O_5+δ interlayer coupling

Han¹,

Chen²,

Wang³

et al. 2021

J. Phys. D: Appl. Phys.

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Evaluation of the AC conductivity and dielectric properties of YBaCo2O5±δ thin films at low temperatures

Galeano

Morán

2018

Vacuum

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On the electrical properties of textured YBaCo2O5+δ thin layers tested by means of complex impedance spectroscopy

Galeano

Zapata

Ostos

et al. 2020

Vacuum

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Growth and characterization of textured YBaCo2O5+δ thin films grown on (001)-SrTiO3 via DC magnetron sputtering

Cited by 3 publications

References 19 publications

Perpendicular magnetic anisotropy induced by La_2/3Sr_1/3MnO₃–YBaCo₂O_5+δ interlayer coupling

Perpendicular magnetic anisotropy induced by La_2/3Sr_1/3MnO₃–YBaCo₂O_5+δ interlayer coupling

Evaluation of the AC conductivity and dielectric properties of YBaCo2O5±δ thin films at low temperatures

On the electrical properties of textured YBaCo2O5+δ thin layers tested by means of complex impedance spectroscopy

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Growth and characterization of textured YBaCo2O5+δ thin films grown on (001)-SrTiO3 via DC magnetron sputtering

Cited by 3 publications

References 19 publications

Perpendicular magnetic anisotropy induced by La2/3Sr1/3MnO3–YBaCo2O5+δ interlayer coupling

Perpendicular magnetic anisotropy induced by La2/3Sr1/3MnO3–YBaCo2O5+δ interlayer coupling

Evaluation of the AC conductivity and dielectric properties of YBaCo2O5±δ thin films at low temperatures

On the electrical properties of textured YBaCo2O5+δ thin layers tested by means of complex impedance spectroscopy

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Perpendicular magnetic anisotropy induced by La_2/3Sr_1/3MnO₃–YBaCo₂O_5+δ interlayer coupling

Perpendicular magnetic anisotropy induced by La_2/3Sr_1/3MnO₃–YBaCo₂O_5+δ interlayer coupling