Competition for the cuprates: A new family of high-TC superconductors has been discovered. Iron pnictide oxides of the rare earth elements, such as LaFeAs(O1−xFx) (see crystal structure), are superconducting at temperatures up to 55 K and have critical magnetic fields up to 60 T. This result heralds a new era for superconductivity research, 22 years after the discovery of the cuprates.
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Johrendt et al. (2008) studied this question.
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