Beta carbon nitride

From Wikipedia, the free encyclopedia

Beta carbon nitride (β-C₃N₄) is a material predicted to be harder than diamond.^[1]

The material was first proposed in 1985 by Marvin Cohen and Amy Liu. Examining the nature of crystalline bonds they theorised that carbon and nitrogen atoms could form a particularly short and strong bond in a stable crystal lattice in a ratio of 1:1.3. That this material would be harder than diamond on the Mohs scale was first proposed in 1989.

[edit] See also

• Superhard materials

[edit] References

1. ^ Access : Crunchy filling : Nature News

• A. Liu and M. Cohen, "Prediction of New Low Compressibility Solids". Science 245, pp. 841-842 (1989)
• C. Niu, Y.Z. Lu and C.M. Lieber, "Experimental Realization of the Covalent Solid Carbon Nitride". Science 261, 334 (1993).
• J. Martín-Gil, F.J. Martín-Gil, M. Sarikaya, M. Qian, M. José-Yacamán, A. Rubio, "Evidence of a low-compressibility carbon nitride with defect-zincblende structure". J. Appl. Phys 81, pp. 2555-2559 (1997).
• L.W. Yin, M.S. Li, Y.X. Liu, J.L. Sui, J.M. Wang, "Synthesis of beta carbon nitride nanosized crystal through mechanochemical reaction". J.Phys.: Condens. Matter 15, pp. 309-314 (2003).
• L.W. Yin, Y. Bando, M.S. Li, Y.X. Liu, Y.X. Qi, "Unique Single-Crystalline Beta Carbon Nitride Nanorods". Advanced Materials 15, pp. 1840-1844 (2003)