Magnetoelectric coefficient values of above 5 and 2 V cm Oe in 20 nm CoFeO-BaTiO and NiFeO-BaTiO core-shell magnetoelectric nanoparticles were demonstrated. These colossal values, compared to 0.1 V cm Oe commonly reported for the 0-3 system, are attributed to (i) the heterostructural lattice-matched interface between the magnetostrictive core and the piezoelectric shell, confirmed through transmission electron microscopy, and (ii) in situ scanning tunneling microscopy nanoprobe-based ME characterization. The nanoprobe technique allows measurements of the ME effect at a single-nanoparticle level which avoids the charge leakage problem of traditional powder form measurements. The difference in the frequency dependence of the ME value between the two material systems is owed to the Ni-ferrite cores becoming superparamagnetic in the near-dc frequency range. The availability of novel nanostructures with colossal ME values promises to unlock many new applications ranging from energy-efficient information processing to nanomedicine and brain-machine interfaces.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.nanolett.0c01588 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Core-Shell Magnetic Particles: Tailored Synthesis and Applications.
Chem Rev
December 2024
Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, iChEM, Fudan University, Shanghai 200433, P. R. China.
Core-shell magnetic particles consisting of magnetic core and functional shells have aroused widespread attention in multidisciplinary fields spanning chemistry, materials science, physics, biomedicine, and bioengineering due to their distinctive magnetic properties, tunable interface features, and elaborately designed compositions. In recent decades, various surface engineering strategies have been developed to endow them desired properties (e.g.
View Article and Find Full Text PDFDoxorubicin-loaded core@shell cobalt ferrite-barium titanate magnetoelectric nanofibers for improved anticancer activity.
Biomed Mater
December 2024
International Research and Education Centre for Physics of Nanostructures, ITMO University, Saint Petersburg 197101, Russia.
Conventional drug delivery systems often suffer from non-specific distribution and limited therapeutic efficacy, leading to significant side effects. To address these challenges, we developed magnetoelectric, cobalt ferrite@barium titanate (CFO@BTO) nanofibers (NFs), with a core-shell structure for targeted anticancer drug delivery. The electrospinning method was employed to synthesize polymeric NFs based on magnetoelectric core-shell nanostructures.
View Article and Find Full Text PDFArticle Synopsis
- The text indicates that there is an error in a previously published article, specifically one identified by the DOI number 10.1371/journal.pone.0274676.
- This correction aims to address and clarify any misinformation or inaccuracies in that article.
- Such corrections are important for maintaining the integrity and accuracy of scientific literature.
Tunable synthesis of magnetoelectric CoFeO-BaTiO core-shell nanowires.
Chem Commun (Camb)
November 2024
Dept. of Materials Science & Engineering, University of Florida, Gainesville, FL 32611, USA.
A template-assisted synthesis approach was employed to tune the structure and properties of CoFeO-BaTiO core-shell magnetoelectric nanowires. By adjusting the composition of the nanowires, we achieved control over the magnetic anisotropy in the CoFeO core phase. This work highlights the potential for enhanced magnetic anisotropy to improve magnetoelectric performance.
View Article and Find Full Text PDFMacroscopic Room-Temperature Magnetoelectricity in Piezoelectric (Core)-Ferrimagnetic (Shell) Nanocomposites.
ACS Nano
November 2024
RIAM, Department of Materials Science and Engineering, College of Engineering, Seoul National University, Kwanakro-5 1, Kwanak-gu, Seoul 08826, Republic of Korea.
The magnetoelectric (ME) effect, which involves the interaction of magnetic and electric fields within a material, has a significant potential for various applications. Our study addresses the limitations of conventional magnetostriction-based ME materials by demonstrating an alternative approach that achieves substantial ME effects in core-shell-type nanocomposites at room temperature. By synthesizing ferrimagnetic FeO nanoparticles onto piezoelectric poly(vinylidene fluoride) (PVDF) particles, we identified a distinct ME mechanism.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!