Abstract
Experimental results are presented on measurements of the crystal structure and heat capacity of nonstoichiometric cubic vanadium carbonitrides VCxNy (x + y = 0.85) in the region of disorder-order phase transitions. It is found that ordered phases V6(C,N)5□ and V8(C,N)7□ with the structures of the V6C5 and V8C7 types form in vanadium carbonitrides at a temperature of ∼1100 K through the first-order phase transition mechanism. The channels of disorder-order transitions are determined. It is found that, in the nonmetal sublattice of the detected ordered phases, C and N atoms form one sublattice and structural vacancies □ form another sublattice. C and N atoms are randomly distributed in their sublattice.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A. I. Gusev, A. A. Rempel, and A. A. Magerl, Disorder and Order in Strongly Nonstoichiometric Compounds: Transition Metal Carbides, Nitrides, and Oxides (Springer, Berlin, 2001).
V. N. Lipatnikov and A. I. Gusev, Ordering in Titanium and Vanadium Carbides (Ural. Otd. Ross. Akad. Nauk, Yekaterinburg, 2000) [in Russian].
A. I. Gusev, Izv. Akad. Nauk SSSR, Neorg. Mater. 19, 1319 (1983).
J. Billingham, P. S. Bell, and M. H. Lewis, Philos. Mag. 25, 661 (1972).
V. N. Lipatnikov, A. I. Gusev, P. Ettmayer, and W. Lengauer, J. Phys.: Condens. Matter 11, 163 (1999).
J. D. Venables, D. Kahn, and R. G. Lye, Philos. Mag. 18, 177 (1968).
C. H. de Novion, N. Lorenzelli, and P. Costa, C. R. Acad. Sci., Ser. B 263, 775 (1966).
S. I. Alyamovskiĭ, P. V. Gel’d, G. P. Shveĭkin, and E. N. Shchetnikov, Zh. Neorg. Khim. 13, 895 (1968).
T. Athanassiadis, N. Lorenzelli, and C. H. de Novion, Ann. Chim. (Paris) 12, 129 (1987).
D. Rafaja, W. Lengauer, P. Ettmayer, and V. N. Lipatnikov, J. Alloys Compd. 269, 60 (1998).
B. V. Khaenko, Izv. Akad. Nauk SSSR, Neorg. Mater. 15, 1952 (1979).
T. Onozuka, Trans. Jpn. Inst. Met. 23, 315 (1982).
F. Faĭzullaev, I. Karimov, M. Kalanov, and A, Émiraliev, Izv. Akad. Nauk Usb. SSR, Ser. Fiz.-Mat. Nauk, No. 5, 74 (1979).
F. Faĭzullaev, I. Karimov, M. Kalanov, et al., Fiz. Met. Metalloved. 49, 209 (1980).
F. Faĭzullaev, I. Karimov, M. Kalanov, et al., Izv. Akad. Nauk SSSR, Neorg. Mater. 17, 1000 (1981).
O. V. Kovalev, Irreducible Representations of the Space Groups (Akad. Nauk USSR, Kiev, 1961; Gordon and Breach, New York, 1965).
A. A. Rempel, L. V. Zueva, V. N. Lipatnikov, and H.-E. Shaefer, Phys. Status Solidi A 169, R9 (1998).
A. I. Gusev and A. A. Rempel, Nanocrystalline Materials (Cambridge Int. Sci., Cambridge, 2004).
V. N. Lipatnikov and A. I. Gusev, Neorg. Mater. 42, 16 (2006).
Author information
Authors and Affiliations
Additional information
Original Russian Text © A.I. Gusev, V.N. Lipatnikov, 2006, published in Pis’ma v Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2006, Vol. 84, No. 11, pp. 714–719.
Rights and permissions
About this article
Cite this article
Gusev, A.I., Lipatnikov, V.N. Effect of ordering on the structure and heat capacity of cubic vanadium carbonitrides VCxNy . Jetp Lett. 84, 598–603 (2007). https://doi.org/10.1134/S0021364006230068
Received:
Issue Date:
DOI: https://doi.org/10.1134/S0021364006230068