Please use this identifier to cite or link to this item:
http://dx.doi.org/10.25673/38662
Title: | Preparation and magnetoelectric behavior of Ni/BaTiO3 heterostructures with 0‐3‐connectivity |
Author(s): | Buttlar, Toni Walther, Till Dörr, Kathrin ![]() Ebbinghaus, Stefan ![]() |
Issue Date: | 2020 |
Type: | Article |
Language: | English |
Abstract: | Magnetoelectric 0-3 composites consisting of small ferromagnetic Ni particles in the micrometer range embedded in a ferroelectric BaTiO3 matrix are synthesized by reductive sintering in flowing nitrogen with carbon as the oxygen getter. Phase purity of the samples Nix/(BaTiO3)1 − x (x = 0.1–0.7) is verified by powder X-ray diffraction in combination with scanning electron microscopy/energy-dispersive X-ray spectroscopy analyses and magnetization investigations. The magnetoelectric coefficient (αME) is studied for parallel and perpendicular orientations of polarization and magnetic field. For the latter orientation, a reverse sign and a much weaker signal are found. The dependence of αME on the magnetic direct current bias field shows a linear behavior between ≈±2 kOe and a drop to almost zero above ≈4 kOe. Largest values are obtained for x = 0.4. With increasing frequency of the alternating current driving field, αME becomes larger. At low temperatures, two step-like decreases in the magnetoelectric coefficient occur, reflecting the phase transitions of BaTiO3 (tetragonal→orthorhombic and orthorhombic→rhombohedral). While this finding corroborates the interpretation of αME being a product property of magnetostriction and piezoelectricity, distinct deviations between the field dependence of the integrated ME signal and the magnetostriction of nickel are found. |
URI: | https://opendata.uni-halle.de//handle/1981185920/38908 http://dx.doi.org/10.25673/38662 |
Open Access: | ![]() |
License: | ![]() |
Sponsor/Funder: | Publikationsfond MLU |
Journal Title: | Physica status solidi / B |
Publisher: | Wiley-VCH |
Publisher Place: | Weinheim |
Volume: | 257 |
Issue: | 7 |
Original Publication: | 10.1002/pssb.201900622 |
Appears in Collections: | Open Access Publikationen der MLU |
Files in This Item:
File | Description | Size | Format | |
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pssb.201900622.pdf | 1.94 MB | Adobe PDF | ![]() View/Open |