%0 Journal Article %K Thin films %K Electric fields %K Ferromagnetism %K Epitaxial growth %K Electric-field control %K Bismuth %K Ferrite %K Magnetoelectrics %K Materials systems %K Complex perovskites %K Interfacial phenomena %K Multi-ferroics %K Spin-orbit coupling effects %K Weak ferromagnetism %A Ramamoorthy Ramesh %B Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences %D 2014 %G eng %I Royal Society %R 10.1098/rsta.2012.0437 %T Electric field control of ferromagnetism using multi-ferroics: The bismuth ferrite story %V 372 %X Since the re-emergence of multi-ferroics and magnetoelectrics almost a decade ago, bismuth ferrite has been among the most heavily studied model system. It is a multi-ferroic with robust ferroelectricity and antiferromagnetism, in conjunction with weak ferromagnetism arising primarily from spin-orbit coupling effects. This material system has generated a significant amount of discussion in the community, because many of the physical properties measured in thin films are different from the bulk. This paper summarizes some of the key observations in this versatile materials system, with a particular focus on thin films, heterostructures and interfacial phenomena. © 2014 The Author(s).