Exploring pressure-induced phase transitions of C3N4 with graphite structure by electrical resistance measurements
According to the theoretical calculations [1,2], (3 C3N4 and cubic-C3N4 are new superhard materials, be cause their bulk modulus is larger than that of diamond. Although the pure (3-C3N4 has been synthesized successfully [3-5], the pure cubic-C3N4 has not been obtained experimentally. Recently, pure...
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Published in: | Carbon (New York) 2005, Vol.43 (5), p.1109-1111 |
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Main Authors: | , , , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | According to the theoretical calculations [1,2], (3 C3N4 and cubic-C3N4 are new superhard materials, be cause their bulk modulus is larger than that of diamond. Although the pure (3-C3N4 has been synthesized successfully [3-5], the pure cubic-C3N4 has not been obtained experimentally. Recently, pure C3N4 with graphite structure (g-C3N4) considered an important precursor for cubic-C3N4 synthesis under high pressure [2] has been synthesized successfully [6]. This progress provides an opportunity to study the structural phase transition of g-C3N4 under high pressure and is important to ex plore new phases of C3N4 including pure cubic-C3N4 In this paper, the electron transport behaviors of g C3N4 under high pressure were investigated by in situ resistance measurement both at ambient temperature and 77 K, and the phase transition information was well reflected. |
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ISSN: | 0008-6223 1873-3891 |
DOI: | 10.1016/j.carbon.2004.12.003 |