Magnetoelectric coupling in nonsintered bulk BaTiO3 -- xCoFe2O4 multiferroic composites
Plyushch A. 1Grigalaitis R. 1Macutkevic J. 1Banys J. 1Lewin D. 2Shvartsman V.V. 2Lupascu D.C. 2Sokal A. 3Lapko K.N. 3Salamon S. 4Wende H. 4Kuzhir P.P.5
扫码查看
点击上方二维码区域，可以放大扫码查看
作者信息
1. Faculty of Physics Vilnius University
2. Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE) University of Duisburg-Essen
3. Faculty of Chemistry Belarusian State University
4. Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE) University of Duisburg-Essen
5. Department of physics and mathematics Institute of Photonics University of Eastern Finland
折叠
Abstract
? 2022 Elsevier B.V.Bulk BaTiO3-xCoFe2O4, x = 0.1 – 0.6 magnetoelectric composites were prepared using the phosphate bonded ceramics approach. XRD analysis proved the purity of both phases. The dielectric properties are governed by a series of composition-dependent Maxwell-Wagner relaxations and conductivity at lower frequencies and a phase transition-related anomaly at higher frequencies. A dielectric constant as high as 616 – 9387i is observed at 500 K for BaTiO3-0.6CoFe2O4. The magnetic hysteresis demonstrates a high Ms/Mr ratio of 0.46, which is related to the around 30 nm size of the CoFe2O4 particles. The measured direct magnetoelectric coupling coefficient of 1.1 mV Oe?1 cm?1 is higher than that of the conventionally sintered ceramics and compatible with that of core-shell structures.
NSTL
Elsevier