Abstract
This paper presents electrical resistivity and superconductivity studies for the B1 (NaCl) structure oxides of titanium, vanadium, and niobium. In samples of nominal composition TiO x , VO x , and NbO x ,x was varied from 0.8 to 1.2. It was found that all three of these oxides exhibit room-temperature electrical resistivities characteristic of metallic behavior. With decreasing temperature, the resistivity drops steeply in the case of NbO x , but remains steady or rises somewhat in the case of TiO x and VO x , depending on the exact value ofx. It is suggested that in TiO x and VO x there is a large resistivity component due to scattering of carriers by disordered vacancies. Superconductivity was observed in NbO x (T c=1.38 K,x=1.0) and TiO x (T c=1.0 K,x=1.07). In the latter case the material showed a well-defined maximum ofT c as a function of composition, withT c<0.05 K forx<0.85 andx>1.20. Several VO x samples remained normal to 0.07 K.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
W. Meissner,Wien Harms Handbuch der Exp. Physik 11, 2 (Akad. Verlagsgesellschaft m.b.H. Peipzig, 1935).
B. T. Matthias and J. K. Hulm,Phys. Rev. 87, 799 (1952).
G. F. Hardy and J. K. Hulm,Phys. Rev. 93, 1004 (1954).
J. K. Hulm, C. K. Jones, R. Mazelsky, R. C. Miller, R. A. Hein, and J. W. Gibson,Proc. IXth Int. Conf. Low Temp. Phys. (Plenum Press, New York, 1965), p. 600.
P. Ehrlich,Z. Electrochem. 45, 362 (1939).
P. Ehrlich,Z. Anorg. Allgem. Chem. 247, 53 (1941).
W. Rostoker,Trans. AIME 194, 981 (1952).
E. S. Bumps, H. D. Kessler, and M. Hansen,Trans. Am. Soc. Metals 45, 1008 (1953).
S. P. Denker,J. Phys. Chem. Solids 25, 1397 (1964).
N. Schönberg,Acta. Chem. Scand. 8, 221 (1954).
G. Brauer,Z. Anorg. Allgem. Chem. 248, 1 (1941).
S. P. Denker,J. Appl. Phys. 37, 142 (1966).
S. Kawano, K. Kosuge, and S. Kachi,J. Phys. Soc. Japan 21, 2744 (1966).
S. Andersson, B. Collen, U. Kuylenstierna, and A. Magneli,Acta. Chem. Scand. 11, 1641 (1957).
D. Watanabe, J. R. Castles, A. Jostsons, and A. S. Malin,Nature 210, 934 (1966).
N. J. Doyle, J. K. Hulm, C. K. Jones, R. C. Miller, and A. Taylor,Phys. Letters 26A, 604 (1968).
R. P. Elliott,Trans. Am. Soc. Metals 52, 990 (1959).
W. Desorbo,Phys. Rev. 132, 107 (1963).
A. L. Giorgi, E. G. Szklarz, E. K. Storms, L. Bowman, and B. T. Matthias,Phys. Rev. 125, 837 (1963).
J. K. Hulm and R. D. Blaugher,Phys. Rev. 123, 1569 (1961).
R. A. Hein and P. H. E. Meijer,Phys. Rev. 179, 497 (1969).
V. Ern and A. C. Switendick,Phys. Rev. 137, A1927 (1965).
W. L. McMillan,Phys. Rev. 167, 331 (1968).
J. M. Schoen and S. P. Denker,Phys. Rev. 184, 864 (1969).
J. K. Hulm, M. S. Walker, and N. Pessall, Proc. of Int. Conf. on Superconductivity, Stanford Univ., August, 1969.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Hulm, J.K., Jones, C.K., Hein, R.A. et al. Superconductivity in the TiO and NbO systems. J Low Temp Phys 7, 291–307 (1972). https://doi.org/10.1007/BF00660068
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00660068