Abstract
The low-temperature specific heats of liquid-quenched Au-Ni alloys containing between 20 and 52 at % Ni have been measured using ac calorimetry techniques. The specific heats of alloys near the critical composition for ferromagnetism (42–44 at % Ni) contain an anomalous contribution, similar to that observed in Cu-Ni alloys, seen as a significant upturn below 6 K in plots ofC/T vs.T 2. The anomalous contribution can be interpreted in terms of a magnetic cluster contribution, which is independent of temperature above 2 K. The magnitude of the cluster contribution is greatest at the critical composition, and is 2–3 times larger than the cluster contribution for Cu-Ni alloys. This suggests that these liquid-quenched Au-Ni alloys contain a greater concentration of magnetic clusters than the Cu-Ni alloys. The average cluster moment is therefore smaller, since the saturation magnetizations are comparable.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
T. J. Hicks, B. Rainford, J. S. Kouvel, G. G. Low, and J. B. Comly,Phys. Rev. Lett. 22, 531 (1969).
J. S. Kouvel and J. B. Comly,Phys. Rev. Lett. 24, 598 (1970).
C. G. Robbins, H. Claus, and P. A. Beck,Phys. Rev. Lett. 22, 1307 (1969).
J. P. Perrier, B. Tissier, and R. Tournier,Phys. Rev. Lett. 24, 313 (1970).
C. G. Robbins, H. Claus, and P. A. Beck,J. Appl. Phys. 40, 2269 (1969).
D. L. Martin,Phys. Rev. B 6, 1169 (1972).
M. Dixon, F. E. Hoare, and T. M. Holden,Proc. Roy. Soc. A 303, 339 (1968).
K. P. Gupta, C. H. Cheng, P. A. Beck,Phys. Rev. 133A, 203 (1964).
R. W. Houghton, M. P. Sarachik, and J. S. Kouvel,Phys. Rev. Lett. 25, 238 (1970).
J. R. Clinton, E. H. Tyler, and H. L. Luo,J. Phys. F: Metal Phys. 4, 1162 (1974).
M. Hansen and K. Anderko,Constitution of Binary Alloys (McGraw-Hill, New York, 1958), p. 219.
P. Pietrokowsky,J. Sci. Instr. 34, 445 (1962).
P. F. Sullivan and G. Seidel,Phys. Rev. 173, 679 (1968).
R. L. Greene, C. N. King, R. B. Zubeck, and J. J. Hauser,Phys. Rev. B 6, 3297 (1972).
R. Viswanathan and H. L. Luo,Solid State Commun. 9, 1733 (1971).
A. Hahn and E. P. Wohlfarth,Helv. Phys. Acta 41, 857 (1968).
W. F. Brinkman and S. Engelsberg,Phys. Rev. 169, 417 (1968).
S. Engelsberg, W. F. Brinkman, and S. Doniach,Phys. Rev. Lett. 20, 1040 (1968).
R. L. Falge, Jr., and N. M. Wolcott,J. Low Temp. Phys. 5, 617 (1971).
K. Schroeder,J. Appl. Phys. 32, 880 (1961).
J. D. Livingston and C. P. Bean,J. Appl. Phys. 32, 1964 (1961).
E. H. Tyler and H. L. Luo, to be published.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Eno, H.F., Tyler, E.H. & Luo, H.L. Specific heats of fast-quenched Au-Ni alloys. J Low Temp Phys 28, 443–448 (1977). https://doi.org/10.1007/BF00661441
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00661441