I thought I should mention something other than graphene, although, of course, I am not really interested. This Cornell experiment was conducted at an extremely cold temperature - about 4 degrees Kelvin (-452 Fahrenheit). Too cold for me to think of as practical. The is supposedly the best known example of a simultaneously ferroelectric, ferromagnetic by a factor of 1,000. The research is described in Nature, Aug. 19, 2010.
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