The article, which, incidentally, is actually yet another summary of another article [uts.edu.au] from the University of Technology in Sydney, which is a summary of an article [aip.org] in the Journal of Applied Physics, which in turn is a summary of probably a very detailed thesis or dissertation backed by metric craptons of research data by Ali R. Ranjbartoreh, Bei Wang, Xiaoping Shen, and Guoxi