Research Progress of Film/Bulk Oxide Magnetoelectric Composites

doi:10.15541/jim20140019

Abstract

Abstract:

Composite ceramics of ferrites (e.g., CoFe₂O₄, NiFe₂O₄) and ferroelectrics (e.g., BaTiO₃, Pb(Zr_xTi_1-_x)O₃) are classical magnetoelectric (ME) materials, which are also the first composites found to exhibit large room-temperature ME effect. These composites are generally fabricated via sintering at high temperature of over 1200℃. However, such high-temperature co-firing processing yields atom inter-diffusion and/or chemical reactions between two phases, or even microcracks. In this review, several low-temperature (normally below 800℃) synthesis routes of depositing the ferromagnetic (ferroelectric) films on ferroelectric (ferromagnetic) bulk single-crystals or ceramics are summarized. By such means, the above-mentioned problems can be avoided to improve the ME effect across the interface. Methods frequently used for characterizing the ME effect in these ceramics-based composites films are also discussed.

Key words: film/bulk composite, magnetoelectric effect, low-temperature growth

CLC Number:

TQ174

WANG Jing, WU Xia, DENG Chao-Yong, ZHU Kong-Jun, NAN Ce-Wen. Research Progress of Film/Bulk Oxide Magnetoelectric Composites[J]. Journal of Inorganic Materials, 2014, 29(9): 905-911.

Figures/Tables 7

Fig. 1 ME voltage of PZT/LSMO vs static magnetic ﬁeld at different temperatures. The inset shows the magnetostrictive strain of LSMO at different temperatures[14]

Fig. 2 Magnetic bias H dependence of the ME coefficient of the BTO/CFO composite. The inset shows the schematic of the measurement[15]

Fig. 3 Magnetic bias dependence of the in-plane magnetoelectric coefficient αE of PZT/CFO-A and PZT/CFO-B samples, The inset is a schematic of measurement [16]

Fig. 4 Magnetoelectric voltage coefficient of MPB-PZT/Ag/CFO, PZT-PZN/Ag/CFO and PZT/Ag/CFO as a function of applied magnetic bias. The inset shows dE/dH and |dλ11/dH| with applied magnetic field[20]

Fig. 5 ΔM/M0 of LSMO/BTO at different temperatures upon electric fields[28]

Fig. 6 Dependence of (a) the magnetization of LSMO film and (b) in-plane strain of PMN-PT on the electric field applied to the substrate (recorded for three cycles)[26-27]

Fig. 7 FMR absorption spectra at different electric ﬁelds while the external magnetic ﬁelds was applied along (a) [100] and (b)[01 ] directions of PZN-PT, comparison of FMR absorption peak along [100] and [01 ] at different electric fields (c)[33]

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