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Title: Ferroelectric polarization control of magnetic anisotropy in PbZ r 0.2 T i 0.8 O 3 / L a 0.8 S r 0.2 Mn O 3 heterostructures

Abstract

The interfacial coupling between the switchable polarization and neighboring magnetic order makes ferroelectric/ferromagnetic composite structures a versatile platform to realize voltage control of magnetic anisotropy. Here, we report the nonvolatile ferroelectric field effect modulation of the magnetocrystalline anisotropy (MCA) in epitaxial PbZ r 0.2 T i 0.8 O 3 (PZT)/ L a 0.8 S r 0.2 Mn O 3 (LSMO) heterostructures grown on (001) SrTi O 3 substrates. Planar Hall effect measurements show that the in-plane magnetic anisotropy energy in LSMO is enhanced by about 22% in the hole accumulation state compared to the depletion state, in quantitative agreement with our first-principles density functional theory calculations. Modeling the spin-orbit coupling effect with second-order perturbation theory points to the critical role of the d -orbital occupancy in controlling MCA. Our work provides insights into the effect of ferroelectric polarization on the magnetic anisotropy at the composite multiferroic interfaces, paving the way for their implementation into high-performance, low-power spintronic applications.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Univ. of Nebraska, Lincoln, NE (United States)
Publication Date:
Research Org.:
Univ. of Nebraska, Lincoln, NE (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
OSTI Identifier:
1596913
Alternate Identifier(s):
OSTI ID: 1493968
Grant/Contract Number:  
SC0016153; DMR-1420645; DMR-1148783; DMR-1710461
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Materials
Additional Journal Information:
Journal Volume: 3; Journal Issue: 2; Journal ID: ISSN 2475-9953
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Magnetic Anisotropy; Ferroelectric Field Effect; Multiferroic Interface

Citation Formats

Rajapitamahuni, A., Tao, L. L., Hao, Y., Song, J., Xu, X., Tsymbal, E. Y., and Hong, Xia. Ferroelectric polarization control of magnetic anisotropy in PbZr0.2Ti0.8O3 / La0.8Sr0.2MnO3 heterostructures. United States: N. p., 2019. Web. doi:10.1103/PhysRevMaterials.3.021401.
Rajapitamahuni, A., Tao, L. L., Hao, Y., Song, J., Xu, X., Tsymbal, E. Y., & Hong, Xia. Ferroelectric polarization control of magnetic anisotropy in PbZr0.2Ti0.8O3 / La0.8Sr0.2MnO3 heterostructures. United States. doi:10.1103/PhysRevMaterials.3.021401.
Rajapitamahuni, A., Tao, L. L., Hao, Y., Song, J., Xu, X., Tsymbal, E. Y., and Hong, Xia. Fri . "Ferroelectric polarization control of magnetic anisotropy in PbZr0.2Ti0.8O3 / La0.8Sr0.2MnO3 heterostructures". United States. doi:10.1103/PhysRevMaterials.3.021401. https://www.osti.gov/servlets/purl/1596913.
@article{osti_1596913,
title = {Ferroelectric polarization control of magnetic anisotropy in PbZr0.2Ti0.8O3 / La0.8Sr0.2MnO3 heterostructures},
author = {Rajapitamahuni, A. and Tao, L. L. and Hao, Y. and Song, J. and Xu, X. and Tsymbal, E. Y. and Hong, Xia},
abstractNote = {The interfacial coupling between the switchable polarization and neighboring magnetic order makes ferroelectric/ferromagnetic composite structures a versatile platform to realize voltage control of magnetic anisotropy. Here, we report the nonvolatile ferroelectric field effect modulation of the magnetocrystalline anisotropy (MCA) in epitaxial PbZr0.2Ti0.8O3 (PZT)/La0.8Sr0.2MnO3 (LSMO) heterostructures grown on (001) SrTiO3 substrates. Planar Hall effect measurements show that the in-plane magnetic anisotropy energy in LSMO is enhanced by about 22% in the hole accumulation state compared to the depletion state, in quantitative agreement with our first-principles density functional theory calculations. Modeling the spin-orbit coupling effect with second-order perturbation theory points to the critical role of the d-orbital occupancy in controlling MCA. Our work provides insights into the effect of ferroelectric polarization on the magnetic anisotropy at the composite multiferroic interfaces, paving the way for their implementation into high-performance, low-power spintronic applications.},
doi = {10.1103/PhysRevMaterials.3.021401},
journal = {Physical Review Materials},
issn = {2475-9953},
number = 2,
volume = 3,
place = {United States},
year = {2019},
month = {2}
}

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Cited by: 3 works
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