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Title: Magnetoelectricity of CoFe 2O 4 and tetragonal phase BiFeO 3 nanocomposites prepared by pulsed laser deposition

Abstract

The coupling between the tetragonal phase (T-phase) of BiFeO 3 (BFO) and CoFe 2O 4 (CFO) in magnetoelectric heterostructures has been studied. Bilayers of CFO and BFO were deposited on (001) LaAlO 3 single crystal substrates by pulsed laser deposition. After 30 min of annealing, the CFO top layer exhibited a T-phase-like structure, developing a platform-like morphology with BFO. Magnetic hysteresis loops exhibited a strong thickness effect of the CFO layer on the coercive field, in particular along the out-of-plane direction. Magnetic force microscopy images revealed that the T-phase CFO platform contained multiple magnetic domains, which could be tuned by applying a tip bias. Here, a combination of shape, strain, and exchange coupling effects are used to explain the observations.

Authors:
ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1];  [1];  [1]
  1. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Publication Date:
Research Org.:
Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1500113
Grant/Contract Number:  
FG02-06ER46290
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Gao, Min, Viswan, Ravindranath, Tang, Xiao, Leung, Chung Ming, Li, Jiefang, and Viehland, D. Magnetoelectricity of CoFe2O4 and tetragonal phase BiFeO3 nanocomposites prepared by pulsed laser deposition. United States: N. p., 2018. Web. doi:10.1038/s41598-017-18788-8.
Gao, Min, Viswan, Ravindranath, Tang, Xiao, Leung, Chung Ming, Li, Jiefang, & Viehland, D. Magnetoelectricity of CoFe2O4 and tetragonal phase BiFeO3 nanocomposites prepared by pulsed laser deposition. United States. doi:10.1038/s41598-017-18788-8.
Gao, Min, Viswan, Ravindranath, Tang, Xiao, Leung, Chung Ming, Li, Jiefang, and Viehland, D. Wed . "Magnetoelectricity of CoFe2O4 and tetragonal phase BiFeO3 nanocomposites prepared by pulsed laser deposition". United States. doi:10.1038/s41598-017-18788-8. https://www.osti.gov/servlets/purl/1500113.
@article{osti_1500113,
title = {Magnetoelectricity of CoFe2O4 and tetragonal phase BiFeO3 nanocomposites prepared by pulsed laser deposition},
author = {Gao, Min and Viswan, Ravindranath and Tang, Xiao and Leung, Chung Ming and Li, Jiefang and Viehland, D.},
abstractNote = {The coupling between the tetragonal phase (T-phase) of BiFeO3 (BFO) and CoFe2O4 (CFO) in magnetoelectric heterostructures has been studied. Bilayers of CFO and BFO were deposited on (001) LaAlO3 single crystal substrates by pulsed laser deposition. After 30 min of annealing, the CFO top layer exhibited a T-phase-like structure, developing a platform-like morphology with BFO. Magnetic hysteresis loops exhibited a strong thickness effect of the CFO layer on the coercive field, in particular along the out-of-plane direction. Magnetic force microscopy images revealed that the T-phase CFO platform contained multiple magnetic domains, which could be tuned by applying a tip bias. Here, a combination of shape, strain, and exchange coupling effects are used to explain the observations.},
doi = {10.1038/s41598-017-18788-8},
journal = {Scientific Reports},
issn = {2045-2322},
number = 1,
volume = 8,
place = {United States},
year = {2018},
month = {1}
}

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Cited by: 5 works
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Figures / Tables:

Figure 1 Figure 1: AFM height images of (a–c) CFO(7 nm)/BFO(28 nm)/(001)LAO, and (d–f) CFO(7 nm)/ BFO(28 nm)/(001)STO. (a,d) The as-grown samples, (b,e) the 15 min annealed samples, (c,f) the 30 min annealed samples. The surface roughness is listed as insets.

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.