Ultrasonic-Attenuation and Pressure Measurements in Phase-Separated Solid 3He-4He Mixtures

  • I. Iwasa
  • H. Suzuki
Conference paper
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 51)


The phase separation of solid 3He-4He mixtures is known to obey fairly well the regular solution theory, in which the phase separation temperature TPS is given by
$$ {T_{PS}} = 2{T_c}(1 - 2{X_4})/1n((1 - {X_4})/{X_4}).$$
Here X4 is the atomic concentration of 4He and Tc = 0.38 K is the critical temperature [1]. MULLIN [2] made a more detailed theory of phase separation based on the self-consistent phonon theory and found an excess volume on mixing ΔV given by
$$ \Delta V = - 0.4{X_4}(1 - {X_4})[c{m^3}/mole].$$
He predicted a pressure increase on phase separation at a constant volume, which was verified by PANCZYK et al. [3] by using a capacitive strain gauge.


Phase Separation Stress Amplitude Excess Volume Ultrasonic Attenuation Phase Separation Process 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    D.O. Edwards, A.S. McWilliams and J.G. Daunt: Phys. Rev. Lett 9, 195 (1962).CrossRefADSGoogle Scholar
  2. 2.
    W.J. Mullin: Phys. Rev. Lett. 20, 254 (1968).CrossRefADSGoogle Scholar
  3. 3.
    M.F. Panczyk, R.A. Scribner, J.R. Gonano and E.D. Adams: Phys. Rev. Lett. 21, 594 (1968).CrossRefADSGoogle Scholar
  4. 4.
    A.S. Greenberg and A. Armstrong: Phys. Rev. B22, 4336 (1980).Google Scholar
  5. 5.
    I. Iwasa, N. Saito and H. Suzuki: J. Phys. Soc. Jpn. 52, 952 (1983).CrossRefADSGoogle Scholar
  6. 6.
    B.A. Fraas and R.O. Simmons: Physica 107B, 277 (1981).Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1984

Authors and Affiliations

  • I. Iwasa
    • 1
  • H. Suzuki
    • 1
  1. 1.Department of PhysicsUniversity of TokyoBunkyo-ku Tokyo 113Japan

Personalised recommendations