s s Saxena - Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB۳ ۰HE, UK
k Ahilan - Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB۳ ۰HE, UK
t e Weller - Department of Physics and Astronomy, University College of London, Gower Street, London WCIE ۶BT, UK
M Ellerby - Department of Physics and Astronomy, University College of London, Gower Street, London WCIE ۶BT, UK

The collapse of antiferromagnetic order as a function of some quantum tuning parameter such as carrier density or hydrostatic pressure is often accompanied by a region of superconductivity. The corresponding phenomenon in the potentially simpler case of itinerant-electron ferromagnetism, however, remains more illusive. In this paper we consider the reasons why this may be so and summaries evidence suggesting that the obstacles to observing the phenomenon are apparently overcome in a few metallicferromagnets. A new twist to the problem presented by the recent discoveries in ferroelectric symmetric systems and new graphite intercalate superconductors will also be discussed

strongly correlated electrons, superconductivity, magnetism, ferroelectricity, intercalated graphite, quantm phase transitions