Abstract
We have performed demagnetization experiments on spherical specimens of silver chloride-bonded, compacted powders of four different compounds. Pure and lanthanum-diluted cerium magnesium nitrate (CMN) was studied along with two new compounds formed from cerium iodide and antipyrine and from cerium thiocyanate and triphenyl phosphine oxide. The magnetic temperaturesT* were determined from measurements of the magnetic susceptibility perpendicular to the axis of the initial magnetizing field. Both the lanthanum-diluted CMN and the triphenyl phosphine oxide compounds yielded significantly lower values ofT* than that obtained with CMN. The problem of thermal equilibrium within the demagnetized sample is considered.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
H. B. G. Casimir and F. K. du Pré,Physica 5, 507 (1938).
B. M. Abraham, O. Brandt, Y. Eckstein, J. B. Ketterson, M. Kuchnir, and P. Roach,Phys. Rev. 187, 273 (1969).
B. M. Abraham, J. B. Ketterson, and P. R. Roach,Phys. Rev. 6, 4675 (1972).
J. H. Van Vleck,J. Chem. Phys. 5, 320 (1937).
P. R. Roach, B. M. Abraham, J. B. Ketterson, R. Greiner, and W. Van Antwerp,J. Low Temp. Phys. 13, 59 (1973).
B. M. Abraham, inProc. 1970 Ultra Low Temperature Symp., Naval Research Laboratory, Washington, D.C., 1970, NRL Report 7133.
B. M. Abraham and Y. Eckstein,Phys. Rev. Lett. 24, 663 (1970).
A. C. Anderson, G. L. Salinger, and J. C. Wheatley,Rev. Sci. Instr. 32, 1110 (1961).
R. P. Hudson and E. R. Pfeiffer, inProc. Fifth Symp. on Temperature, Washington, D.C., 1971.
E. Maxwell,Rev. Sci. Instr. 36, 553 (1965).
W. J. Huiskamp, private communication.
M. Kolāč, K. Svec, R. S. Safrata, J. Matas, and T. Těthal,J. Low Temp. Phys. 11, 297 (1973).
H. Van Kempen, W. T. Duffy, Jr., A. R. Miedema, and W. J. Huiskamp,Physica 30, 1131 (1964).
H. Van Kempen, T. Garofano, A. R. Miedema, and W. J. Huiskamp,Physica 31, 1096 (1965).
C. Beduz, H. C. Meijer, and G. J. C. Bots,Phys. Lett. 44A, 185 (1973).
J. M. Daniels and F. N. H. Robinson,Phil. Mag. 44, 630 (1953).
R. P. Hudson and R. S. Kaeser,Physics 3, 95 (1967).
Author information
Authors and Affiliations
Additional information
Contribution of the National Bureau of Standards. Not subject to copyright.
Based on work performed under the auspices of the National Bureau of Standards and the U.S. Atomic Energy Commission.
Rights and permissions
About this article
Cite this article
Abraham, B.M., Ketterson, J.B., Roach, P.R. et al. Demagnetization experiments on some promising new compounds for very low-temperature refrigeration. J Low Temp Phys 14, 387–396 (1974). https://doi.org/10.1007/BF00655342
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00655342