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Letter

Nature Materials 6, 192–197 (1 March 2007) | doi:10.1038/nmat1839

Polyamorphism in a metallic glass

H. W. Sheng , H. Z. Liu , Y. Q. Cheng , J. Wen , P. L. Lee , W. K. Luo , S. D. Shastri & E. Ma

A metal, or an alloy, can often exist in more than one crystal structure. The face-centred-cubic and body-centred-cubic forms of iron (or steel) are a familiar example of such polymorphism.