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Magnetization Measurements and Pressure Dependence of the Curie Point of the Phase Sc3In

W. E. Gardner* and T. F. Smith*

B. W. Howlett

C. W. Chu and A. Sweedler

  • Solid State Physics Division, Atomic Energy Research Establishment, Harwell, Didcot, Berkshire, England

  • Metallurgy Division, Atomic Energy Research Establishment, Harwell, Didcot, Berkshire, England

  • Institute for the Study of Matter and Department of Physics, University of California, San Diego, La Jolla, California

  • *Work carried out in part at the University of California, San Diego, La Jolla, Calif.
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Phys. Rev. 166, 577 – Published 10 February, 1968

DOI: https://doi.org/10.1103/PhysRev.166.577

Abstract

The approximate composition limits of the Sc3In phase have been determined as 22 to 23 at.% In. Susceptibility measurements have been made on a number of alloys, containing various amounts of the Sc3In phase, in the composition range 21-26 at.% In. Heat and mechanical treatments reveal a critical dependence of the magnetic properties on the degree of order of the Sc3In phase. Although the susceptibility varies inversely with temperature, this behavior is not considered to be evidence for the presence of localized moments, since the magnetic moment per Sc atom is much smaller than that associated with S=12, and does not agree with the value obtained from the magnetization data as a function of magnetic field. Initial susceptibility measurements, below the Curie temperature, exhibit structure which suggests that a strong magnetocrystalline anistropy may exist at temperatures close to Tc. The pressure dependence of the Curie point has been determined as ∂Tc∂P=1.95×10−4 °K bar−1.

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Phys. Rev. 166, 577– Published 10 February, 1968
  • Received 29 August 1967

© 1968 American Physical Society

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