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Journal article
Thickness-Dependent Crossover from Charge- to Strain-Mediated Magnetoelectric Coupling in Ferromagnetic/Piezoelectric Oxide Heterostructures
ACS nano, v 8(1), pp 894-903
01 Jan 2014
PMID: 24313563
Abstract
Magnetoelectric oxide heterostructures are proposed active layers for spintronic memory and logic devices, where information is conveyed through spin transport in the solid state. Incomplete theories of the coupling between local strain, charge, and magnetic order have limited their deployment into new information and communication technologies. In this study, we report direct, local measurements of strain-and charge-mediated magnetization changes in the La0.7Sr0.3MnO3/PbZr0.2Ti0.8O3 system using spatially resolved characterization techniques in both real and reciprocal space. Polarized neutron reflectometry reveals a graded magnetization that results from both local structural distortions and interfacial screening of bound surface charge from the adjacent ferroelectric. Density functional theory calculations support the experimental observation that strain locally suppresses through a change in the Mn-e(g) orbital polarization. We suggest that this local coupling and magnetization suppression may be tuned by controlling the manganite and ferroelectric layer thicknesses, with direct implications for device applications.
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Details
- Title
- Thickness-Dependent Crossover from Charge- to Strain-Mediated Magnetoelectric Coupling in Ferromagnetic/Piezoelectric Oxide Heterostructures
- Creators
- Steven R. Spurgeon - Drexel UniversityJennifer D. Sloppy - Drexel UniversityDespoina Maria (Demie) Kepaptsoglou - STFC Daresbury Labs, SuperSTEM, Warrington, Cheshire, EnglandPrasanna V. Balachandran - Drexel UniversitySiamak Nejati - Drexel UniversityJ. Karthik - University of Illinois Urbana-ChampaignAnoop R. Damodaran - University of Illinois Urbana-ChampaignCraig L. Johnson - Drexel UniversityHailemariam Ambaye - Oak Ridge National LaboratoryRichard Goyette - Oak Ridge National LaboratoryValeria Lauter - Oak Ridge National LaboratoryQuentin M. Ramasse - Daresbury LaboratoryJuan Carlos Idrobo - Oak Ridge National LaboratoryKenneth K. S. Lau - Drexel UniversitySamuel E. Lofland - Rowan UniversityJames M. Rondinelli - Drexel UniversityLane W. Martin - University of Illinois Urbana-ChampaignMitra L. Taheri - Drexel UniversityOak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Details
- ACS nano, v 8(1), pp 894-903
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 10
- Grant note
- National Science Foundation Integrative Graduate Education and Research Traineeship (IGERT); National Science Foundation (NSF) CMMI-1031403; DMR-0908779; DMR-0821406; CBET-0846245; DMR-1149062 / National Science Foundation; National Science Foundation (NSF) N66001-12-4224 / Defense Advanced Research Projects Agency; United States Department of Defense; Defense Advanced Research Projects Agency (DARPA) 0846245 / Directorate For Engineering; National Science Foundation (NSF); NSF - Directorate for Engineering (ENG) N00014-1101-0296; N00014-10-1-0525 / Office of Naval Research U.K. Engineering and Physical Sciences Research Council; UK Research & Innovation (UKRI); Engineering & Physical Sciences Research Council (EPSRC) Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy; United States Department of Energy (DOE) 1451219 / Direct For Mathematical & Physical Scien; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) Oak Ridge National Laboratory's Center for Nanophase Materials Sciences (CNMS) W911NF-10-1-0482 / Army Research Office Department of Defense National Defense Science and Engineering Graduate (NDSEG) Fellowship 0908779 / Division Of Materials Research; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Office of Research (and Innovation); Chemical and Biological Engineering
- Web of Science ID
- WOS:000330542900093
- Scopus ID
- 2-s2.0-84893467846
- Other Identifier
- 991019169537404721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology