Sci. Adv. Today 2 (2016) 25227  
  Review Article  
Magnetoelectric multiferroicity at nanoscale  
  Sudipta Goswamia and Dipten Bhattacharyab  
a Department of Solid State Physics, Indian Association for the Cultivation of Science, Kolkata 700032, India
b Nanostructured Materials Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata 700032, India

  In this article, a close look has been taken at the present status of research on magnetoelectric multiferroic properties at nanoscale in single phase systems. Even though seminal work has been done on what really happens to the long-range ferro orders such as ferroelectricity and ferromagnetism at nanoscale which has pushed the size limit below which such long-range orders cease to exist down to a scale of a few unit cells, relatively little has been done on systems which exhibit coexistence of both of these orders in a single phase. However, the application potential of nanoscale multiferroics appears to be enormous in many different fields including bio-medical. This article offers an account of major developments that has taken place in recent time. After introducing the basic concepts of multiferroicity and presenting the crux of the research, so far carried out, on different systems at bulk scale we present here a thorough analyses of the work done in exploring how the magnetoelectric multiferroic properties change, if at all, at nanoscale. The issue of multiferroicity at nanoscale has been addressed using both isolated nanosized particles as well as thin films. The work done so far, of course, leaves a lot to be done in near future including exploration of the most fundamental issue of how the magnetoelectric coupling varies with size in different multiferroic systems. We present at the end an outline of future work.  
  Cite this article as:  
  Sudipta Goswami and Dipten Bhattacharya, Magnetoelectric multiferroicity at nanoscale, Sci. Adv. Today 2 (2016) 25227.