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Title: Magnetoelectricity in CoFe2O4 nanocrystal-P(VDF-HFP) thin films

Abstract

Transition metal ferrites such as CoFe2O4, possessing a large magnetostriction coefficient and high Curie temperature (Tc > 600 K), are excellent candidates for creating magnetic order at the nanoscale and provide a pathway to the fabrication of uniform particle-matrix films with optimized potential for magnetoelectric coupling. Here, a series of 0–3 type nanocomposite thin films composed of ferrimagnetic cobalt ferrite nanocrystals (8 to 18 nm) and a ferroelectric/ piezoelectric polymer poly(vinylidene fluoride-co-hexafluoropropene), P(VDF-HFP), were prepared by multiple spin coating and cast coating over a thickness range of 200 nm to 1.6 μm. We describe the synthesis and structural characterization of the nanocrystals and composite films by XRD, TEM, HRTEM, STEM, and SEM, as well as dielectric and magnetic properties, in order to identify evidence of cooperative interactions between the two phases. The CoFe2O4 polymer nanocomposite thin films exhibit composition-dependent effective permittivity, loss tangent, and specific saturation magnetization (Ms). An enhancement of the effective permittivity and saturation magnetization of the CoFe2O4-P(VDF-HFP) films was observed and directly compared with CoFe2O4-polyvinylpyrrolidone, a non-ferroelectric polymer-based nanocomposite prepared by the same method. The comparison provided evidence for the observation of a magnetoelectric effect in the case of CoFe2O4-P(VDF-HFP), attributed to a magnetostrictive/piezoelectric interaction. An enhancementmore » of Ms up to +20.7% was observed at room temperature in the case of the 10 wt.% CoFe2O4-P(VDF-HFP) sample.« less

Authors:
 [1];  [2];  [3];  [4];  [4];  [5];  [3];  [6];  [1]
+ Show Author Affiliations
  1. City College of New York, NY (United States). Dept. of Chemistry; City Univ. of New York (CUNY), NY (United States). Energy Institute; The Graduate Center of City Univ. of New York (CUNY), NY (United States). Department of Chemistry
  2. City College of New York, NY (United States). Dept. of Chemistry and Department of Mechanical Engineering; City Univ. of New York (CUNY), NY (United States). Energy Institute
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. City College of New York, NY (United States). Dept. of Physics
  5. City College of New York, NY (United States). Department of Mechanical Engineering
  6. City College of New York, NY (United States). Dept. of Mechanical Engineering
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
Sponsoring Org.:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE Advanced Research Projects Agency - Energy (ARPA-E)
OSTI Identifier:
1629166
Grant/Contract Number:  
AR0000114; 0833180; AC02-98CH10886
Resource Type:
Accepted Manuscript
Journal Name:
Nanoscale Research Letters (Online)
Additional Journal Information:
Journal Name: Nanoscale Research Letters (Online); Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 1556-276X
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Thin film; Magnetoelectric nanocomposite; Magnetostrictive; P(VDF-HFP); CoFe2O4

Citation Formats

Liu, Xiaohua, Liu, Shuangyi, Han, Myung-Geun, Zhao, Lukas, Deng, Haiming, Li, Jackie, Zhu, Yimei, Krusin-Elbaum, Lia, and O’Brien, Stephen. Magnetoelectricity in CoFe2O4 nanocrystal-P(VDF-HFP) thin films. United States: N. p., 2013. Web. doi:10.1186/1556-276X-8-374.
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Liu, Xiaohua, Liu, Shuangyi, Han, Myung-Geun, Zhao, Lukas, Deng, Haiming, Li, Jackie, Zhu, Yimei, Krusin-Elbaum, Lia, & O’Brien, Stephen. Magnetoelectricity in CoFe2O4 nanocrystal-P(VDF-HFP) thin films. United States. https://doi.org/10.1186/1556-276X-8-374
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Liu, Xiaohua, Liu, Shuangyi, Han, Myung-Geun, Zhao, Lukas, Deng, Haiming, Li, Jackie, Zhu, Yimei, Krusin-Elbaum, Lia, and O’Brien, Stephen. Tue . "Magnetoelectricity in CoFe2O4 nanocrystal-P(VDF-HFP) thin films". United States. https://doi.org/10.1186/1556-276X-8-374. https://www.osti.gov/servlets/purl/1629166.
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@article{osti_1629166,
title = {Magnetoelectricity in CoFe2O4 nanocrystal-P(VDF-HFP) thin films},
author = {Liu, Xiaohua and Liu, Shuangyi and Han, Myung-Geun and Zhao, Lukas and Deng, Haiming and Li, Jackie and Zhu, Yimei and Krusin-Elbaum, Lia and O’Brien, Stephen},
abstractNote = {Transition metal ferrites such as CoFe2O4, possessing a large magnetostriction coefficient and high Curie temperature (Tc > 600 K), are excellent candidates for creating magnetic order at the nanoscale and provide a pathway to the fabrication of uniform particle-matrix films with optimized potential for magnetoelectric coupling. Here, a series of 0–3 type nanocomposite thin films composed of ferrimagnetic cobalt ferrite nanocrystals (8 to 18 nm) and a ferroelectric/ piezoelectric polymer poly(vinylidene fluoride-co-hexafluoropropene), P(VDF-HFP), were prepared by multiple spin coating and cast coating over a thickness range of 200 nm to 1.6 μm. We describe the synthesis and structural characterization of the nanocrystals and composite films by XRD, TEM, HRTEM, STEM, and SEM, as well as dielectric and magnetic properties, in order to identify evidence of cooperative interactions between the two phases. The CoFe2O4 polymer nanocomposite thin films exhibit composition-dependent effective permittivity, loss tangent, and specific saturation magnetization (Ms). An enhancement of the effective permittivity and saturation magnetization of the CoFe2O4-P(VDF-HFP) films was observed and directly compared with CoFe2O4-polyvinylpyrrolidone, a non-ferroelectric polymer-based nanocomposite prepared by the same method. The comparison provided evidence for the observation of a magnetoelectric effect in the case of CoFe2O4-P(VDF-HFP), attributed to a magnetostrictive/piezoelectric interaction. An enhancement of Ms up to +20.7% was observed at room temperature in the case of the 10 wt.% CoFe2O4-P(VDF-HFP) sample.},
doi = {10.1186/1556-276X-8-374},
journal = {Nanoscale Research Letters (Online)},
number = 1,
volume = 8,
place = {United States},
year = {Tue Sep 03 00:00:00 EDT 2013},
month = {Tue Sep 03 00:00:00 EDT 2013}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1186/1556-276X-8-374
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    Works referencing / citing this record:

    Ultra-Sensitive Strain Sensor Based on Flexible Poly(vinylidene fluoride) Piezoelectric Film
    journal, March 2018

    A flexible magnetoelectric field-effect transistor with magnetically responsive nanohybrid gate dielectric layer
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    Hollandites as a new class of multiferroics
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    • Liu, Shuangyi; Akbashev, Andrew R.; Yang, Xiaohao
    • Scientific Reports, Vol. 4, Issue 1
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    Optimization of dielectric properties of PVDF-CFO nanocomposites
    journal, November 2018

    • Supriya, Sweety; Kumar, Lawrence; Kar, Manoranjan
    • Polymer Composites, Vol. 40, Issue 3
    • DOI: 10.1002/pc.24840

    Solvent-assisted optimal BaTiO 3 nanoparticles-polymer composite cluster formation for high performance piezoelectric nanogenerators
    journal, November 2014

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