Ferroelectricity‐Induced Surface Ferromagnetism in Core–Shell Magnetoelectric Nanoparticles
Full article
| Journal |
Physica Status Solidi - Rapid Research Letters
ISSN: 1862-6254
, E-ISSN: 1862-6270
|
| Output data |
Year: 2024,
Volume: 18,
Number: 12,
Article number
: 2400122,
Pages count
: 8
DOI:
10.1002/pssr.202400122
|
| Tags |
core–shell nanoparticles; ferroelectricity; ferromagnetism; magnetoelectricity; manganese ferrite |
| Authors |
Canhassi Carlos A.I.
1
,
Chernozem Roman V.
2
,
Chernozem Polina V.
2
,
Romanyuk Konstantin N.
3
,
Zelenovskiy Pavel
3
,
Urakova Alina O.
2
,
Gerasimov Evgeny Y.
4
,
Koptsev Danila A.
2
,
Surmeneva Maria A.
2
,
Surmenev Roman A.
2
,
Kholkin Andrei L.
3
,
Kopelevich Yakov
1
|
| Affiliations |
| 1 |
Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas-UNICAMP, Campinas – SP, 13083-859 Brazil
|
| 2 |
Piezo- and Magnetoelectric Materials Research & Development Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
|
| 3 |
Physics Department & CICECO – Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
|
| 4 |
Department of Catalyst Research, Boreskov Institute of Catalysis SB RAS, Novosibirsk, 630090 Russia
|
|
Funding (11)
|
1
|
Ministry of Science and Higher Education of the Russian Federation
|
075-15-2021-588
|
|
2
|
Foundation for Science and Technology
|
UIDB/50011/2020
|
|
3
|
Foundation for Science and Technology
|
UIDP/50011/2020
|
|
4
|
Foundation for Science and Technology
|
LA/P/0006/2020
|
|
5
|
Foundation for Science and Technology
|
|
|
6
|
Foundation for Science and Technology
|
PTDC/CTM-CTM/4044/2020
|
|
7
|
São Paulo Research Foundation
|
|
|
8
|
National Council for Scientific and Technological Development
|
|
|
9
|
Foundation for Science and Technology
|
57/2017
|
|
10
|
Foundation for Science and Technology
|
57/2016
|
|
11
|
Russian Science Foundation
|
24-43-00171 (123122100091-4)
|
Magnetoelectric nanoparticles (NPs) present an important class of nanomaterials with a wide interest in piezocatalytic and biomedical applications. Herein, the results of magnetoelectric and magnetization measurements performed on core–shell NPs having magnetic core (MnFe2O4, MFO) and ferroelectric shell (Ba0.85Ca0.15Ti0.5Zr0.5O3, BCZT) synthesized by the microwave hydrothermal method are reported. Magnetic results are compared with the measurements on reference MFO NPs prepared under identical conditions. Detailed SQUID magnetometer measurements of the magnetization hysteresis loops M(H) down to 2 K reveal the existence of a clear exchange bias effect in pure MFO NPs attributed to the coexistence of ferromagnetic and antiferromagnetic short-range interactions. When the magnetic core is covered by the thin ferroelectric BCZT shell, it is observed that 1) the shell suppresses the apparent bias effect and 2) induces an “extra” ferromagnetic magnetization at T < 20 K. The results indicate that this “extra” ferromagnetism has a 2D character and it is most likely related to the interface interactions between the MFO core and BCZT shell. Ferroelectric properties and strong magnetoelectric effect in core–shell NPs are revealed via piezoresponse force microscopy under magnetic field. The mechanisms of the observed effects are discussed.