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Harder-than-diamond carbon crystals
Ferroir, Tristan Laboratoire des Sciences de la Terre, Ecole Normale Superieure de Lyon, Lyon, France.
- Basics of natural carbon system and polymorphs
- Theoretical prediction
- Experimental research
- Natural sample observation
- Discovery of two new ultrahard carbon phases
- Related Primary Literature
The search for ultrahard materials has interested both scientists and industry for decades, as many applications for these compounds are foreseen. One of the hardest natural materials known on Earth is diamond, which is made of pure carbon. Therefore, the search for harder crystals has long been focused on the carbon system. In addition, some research has been focused on boron nitride, which has a hardness just slightly lower than that of diamond and is easier to synthesize.
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