Li, Z;
Tao, K;
Ma, J;
Gao, Z;
Koval, V;
Jiang, C;
Viola, G;
... Yan, H; + view all
(2018)
Bi3.25La0.75Ti2.5Nb0.25(Fe0.5Co0.5)0.25O12, a single phase room temperature multiferroic.
Journal of Materials Chemistry C
, 6
(11)
pp. 2733-2740.
10.1039/c8tc00161h.
Preview |
Text
inf_La_inf_ 2018 Accepted.pdf - Accepted Version Download (1MB) | Preview |
Abstract
Multiferroics (MFs) have attracted great research interest due to the coexistence of ferroelectric and magnetic ordering, as well as magnetoelectric (ME) coupling. At present, there is a very limited number of single-phase MFs known and these are still far from practical applications. In single-phase MFs, the simultaneous presence of electric and magnetic dipoles does not guarantee strong (ME) coupling, as the microscopic mechanisms of ferroelectricity and magnetism are quite different and do not intrinsically interact with each other. Here we show that in the ceramic system, Bi3.25La0.75Ti3−2xNbx(Fe0.5Co0.5)xO12, the x = 0.25 composition is ferroelectrically and ferromagnetically active at room temperature. A single-phase structure is supported by XRD, SEM/EDX and neutron diffraction data. Clear ME couplings were observed in this single-phase material at room temperature, where the magnetic iron and cobalt ions contribute to ferroelectric polarization and magnetic moment simultaneously. The results of structural, electrical and magnetic measurements are supported by first principle calculations. This material represents one of the first truly single phase bulk ceramics that exhibits multiferroic behaviour at room temperature and its discovery will help to guide the design of room temperature single-phase MFs with strong ME coupling for sensors and solid-state memory applications.
| Type: | Article |
|---|---|
| Title: | Bi3.25La0.75Ti2.5Nb0.25(Fe0.5Co0.5)0.25O12, a single phase room temperature multiferroic |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/c8tc00161h |
| Publisher version: | https://doi.org/10.1039/c8tc00161h |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Surgery and Interventional Sci |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10101003 |
Archive Staff Only
 |
View Item |
