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Materials science

Magnetic blue

A commonly used blue dye is more than just a pretty colour. This material and its relatives are semiconductors, and their magnetic properties can be controlled by engineering their crystal structure.

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Figure 1: Structure of metal phthalocyanines.

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van den Brink, J., Morpurgo, A. Magnetic blue. Nature 450, 177–178 (2007). https://doi.org/10.1038/450177a

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