Multi-ferroic and magnetoelectric materials and interfaces by J. P. Velev, S. S. Jaswal, and E. Y. Tsymbal Philosophical Transactions A Volume 369(1948):3069-3097.

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Multi-ferroic and magnetoelectric materials and interfaces by J. P. Velev, S. S. Jaswal, and E. Y. Tsymbal Philosophical Transactions A Volume 369(1948): August 13, 2011 ©2011 by The Royal Society

Schematic of the ferroic orders, conjugated fields and corresponding symmetry operations. J. P. Velev et al. Phil. Trans. R. Soc. A 2011;369: ©2011 by The Royal Society

Schematic of the relationship between ferromagnetic (FM), ferroelectric (FE), multi-ferroic (MF) and magnetoelectric (ME) materials. J. P. Velev et al. Phil. Trans. R. Soc. A 2011;369: ©2011 by The Royal Society

Schematic of the different types of coupling corresponding to terms in equation (2.1). J. P. Velev et al. Phil. Trans. R. Soc. A 2011;369: ©2011 by The Royal Society

(a) PEEM and (b) PFM images of a BiFeO3 film before (a,c) and after (b,d) electrical poling. J. P. Velev et al. Phil. Trans. R. Soc. A 2011;369: ©2011 by The Royal Society

Atomic and magnetic structure of BiFeO3. J. P. Velev et al. Phil. Trans. R. Soc. A 2011;369: ©2011 by The Royal Society

Induced spin density on the Fe (001) surface owing to an applied electric field. J. P. Velev et al. Phil. Trans. R. Soc. A 2011;369: ©2011 by The Royal Society

ME hysteresis curve at 100 K showing the magnetic response of La0.8Sr0.2MnO3/ PbZr0.2Ti0.8O3 as a function of the applied electric field. J. P. Velev et al. Phil. Trans. R. Soc. A 2011;369: ©2011 by The Royal Society

Effect of electric field on Fe/MgO magnetocrystalline anisotropy (MCA). J. P. Velev et al. Phil. Trans. R. Soc. A 2011;369: ©2011 by The Royal Society

Schematic of the different types of tunnel junctions: (a) magnetic tunnel junction (MTJ), (b) ferroelectric tunnel junction (FTJ) and (c,d) multi-ferroic tunnel junction (MFTJ) with (c) a FE barrier in the MTJ and (d) a MF barrier. J. P. Velev et al. Phil. Trans. R. Soc. A 2011;369: ©2011 by The Royal Society

Mechanisms affecting tunnelling in FTJs: (a) electrostatic potential at the interface, (b) interface bonding and (c) strain effect. J. P. Velev et al. Phil. Trans. R. Soc. A 2011;369: ©2011 by The Royal Society

Tunnelling electroresistance in a BaTiO3/SrRuO3 FTJ: (a) polarization pattern produced by PFM and (b) the corresponding tunnelling current map measured by C-AFM. J. P. Velev et al. Phil. Trans. R. Soc. A 2011;369: ©2011 by The Royal Society