Pressure Dependence of the Knight Shift in Pt

Toshimoto Kushida; Lajos Rimai

doi:10.1103/PhysRev.148.593

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Pressure Dependence of the Knight Shift in Pt

Toshimoto Kushida and Lajos Rimai

Scientific Laboratory, Ford Motor Company, Dearborn, Michigan

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Phys. Rev. 148, 593 – Published 12 August, 1966

DOI: https://doi.org/10.1103/PhysRev.148.593

Abstract

The Knight shift $K$ of ${Pt}^{195}$ in platinum metal was measured as a function of hydrostatic pressure up to about 8000 kg/ ${cm}^{2}$ , at three temperatures, 64.8°, 0°, and -78.0°C. $| K |$ decreases with increasing pressure. The pressure dependence of $K$ changes markedly with temperature, following a $T^{2}$ law. The temperature dependence of $K$ at constant volume, which has been derived from the previously obtained $K (T)$ at constant pressure and the present pressure-dependence data, may be written as $K = K_{0} + B T^{2} + O [{(\frac{T}{T_{d}})}^{4}]$ , where $T_{d}$ is the degeneracy temperature of the $d$ -band holes. These observations agree with the model proposed by Clogston et al. The experimental volume dependence of $K_{0}$ and $B$ is analyzed using a standard band model. The volume dependences of (i) the Fermi depths of the $s$ and the $d$ band, (ii) the exchange parameter for the $d$ band, and (iii) the number of the $d$ holes are derived from the experimental data.

References (15)

T. J. Rowland, J. Phys. Chem. Solids 7, 95 (1958)
A. M. Clogston, V. Jaccarino, and Y. Yafet, Phys. Rev. 134, A650 (1964)
M. Shimizu and A. Katsuki, J. Phys. Soc. Japan 19, 614 (1964)
T. Kushida and G. B. Benedek, Bull. Am. Phys. Soc. 3, 167 (1958)
T. Kushida, G. B. Benedek, and N. Bloembergen, Phys. Rev. 104, 1364 (1956)
A. H. Silver and T. Kushida, J. Chem. Phys. 38, 865 (1963)
P. W. Bridgman, The Physics of High Pressure (G. Bell and Sons, Ltd., London, 1949)
L. E. Drain, J. Phys. Chem. Solids 24, 379 (1963)
T. Muto and S. Kobayasi, J. Phys. Soc. Japan 19, 1837 (1965)
D. E. Gray, American Institute of Physics Handbook (McGraw-Hill Book Company, Inc., New York, 1963)
G. B. Benedek and T. Kushida, J. Phys. Chem. Solids 5, 241 (1958)
G. B. Benedek and J. Armstrong, J. Appl. Phys. Suppl. 32, 106S (1961)
L. Rimai, T. Deutsch, and B. D. Silverman, Phys. Rev. 133, A1123 (1964)
W. M. Walsh, Phys. Rev. 122, 762 (1961)
J. R. Reitz, in Solid State Physics, edited by F. Seitz and D. Turnbull (Academic Press Inc., New York, 1955), Vol. I, p. 48

[c1] T. J. Rowland, J. Phys. Chem. Solids 7, 95 (1958)

[c2] A. M. Clogston, V. Jaccarino, and Y. Yafet, Phys. Rev. 134, A650 (1964)

[c3] M. Shimizu and A. Katsuki, J. Phys. Soc. Japan 19, 614 (1964)

[c4] T. Kushida and G. B. Benedek, Bull. Am. Phys. Soc. 3, 167 (1958)

[c5] T. Kushida, G. B. Benedek, and N. Bloembergen, Phys. Rev. 104, 1364 (1956)

[c6] A. H. Silver and T. Kushida, J. Chem. Phys. 38, 865 (1963)

[c7] P. W. Bridgman, The Physics of High Pressure (G. Bell and Sons, Ltd., London, 1949)

[c8] L. E. Drain, J. Phys. Chem. Solids 24, 379 (1963)

[c9] T. Muto and S. Kobayasi, J. Phys. Soc. Japan 19, 1837 (1965)

[c10] D. E. Gray, American Institute of Physics Handbook (McGraw-Hill Book Company, Inc., New York, 1963)

[c11] G. B. Benedek and T. Kushida, J. Phys. Chem. Solids 5, 241 (1958)

[c12] G. B. Benedek and J. Armstrong, J. Appl. Phys. Suppl. 32, 106S (1961)

[c13] L. Rimai, T. Deutsch, and B. D. Silverman, Phys. Rev. 133, A1123 (1964)

[c14] W. M. Walsh, Phys. Rev. 122, 762 (1961)

[c15] J. R. Reitz, in Solid State Physics, edited by F. Seitz and D. Turnbull (Academic Press Inc., New York, 1955), Vol. I, p. 48

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Pressure Dependence of the Knight Shift in Pt

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