Temperature dependence of magnetoelectric effect in Bi NdTiO-La CaMnO multiferroic composite films buffered by a LaNiO layer
Journal of Materials Chemistry C, ISSN: 2050-7534, Vol: 2, Issue: 8, Page: 1427-1435
2014
- 32Citations
- 12Captures
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Article Description
Multiferroic composite thin films were fabricated based on ferroelectric (FE) BiNdTiO (BNT) and ferromagnetic (FM) LaCaMnO (LCMO) parents with different growth sequences of BNT-LCMO/LNO/STO (BL) and LCMO-BNT/LNO/STO (LB). Ferroelectric behaviour along with remnant polarization (2P) of 50 μC cm and 40 μC cm at room temperature, saturated magnetization values around 206 emu cm and 192 emu cm at 100 K were measured for BL and LB composite films, respectively. The temperature dependence of the magnetoelectric (ME) coupling effect was investigated and the ME voltage coefficients of 63 mV cm Oe and 60 mV cm Oe at 100 K were respectively obtained for the BL and LB films. The results show that the composite films exhibit both good ferroelectric and ferromagnetic properties, as well as a substantial ME effect. Moreover, it is demonstrated that the layer sequences and temperature have significant impacts on the magnetoelectric coupling behaviour of these double-layered thin films, which is very likely caused by the magnetic-mechanical-electric interaction, substrate clamping and interface coupling. © 2014 The Royal Society of Chemistry.
Bibliographic Details
Royal Society of Chemistry (RSC)
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