Re-Entrant Superconductivity in a Magnetically Ordered Superconductor: La(1-x)Gd(x)Ru2,

Abstract

We have measured the critical temperature (Tc) and the upper critical magnetic field (Hc2) of La(1-x)Gd(x)Ru2. At low concentrations of the magnetic impurity (Gd), the suppression of Tc follows the expected Abrikosov-Gorkov (A-G) pair breaking curve. However, for larger concentrations, strong deviations below A-G are observed. Samples in this region (4. < or = x < or = 5. at. %) exhibit two Tc's. La(1-x)Gd(x)Ru2 is known to order magnetically, probably as a spin glass, and the magnetic ordering temperature (T sub M) has been measured in the normal state. This T sub M curve intersects the Tc curve in the concentration range where the Tc curve is re-entrant and we therefore attribute the re-entrant Tc behavior to the magnetic ordering of the Gd(3+) ions. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1978
Accession Number
ADA062382

Entities

People

  • E. P. Chock
  • J. F. Kwak
  • Paul Chaikin
  • T. E. Jones

Organizations

  • University of California, Los Angeles

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Climate Change
  • Conductivity
  • Critical Temperature
  • Diagrams
  • High Temperature
  • Hysteresis
  • Magnetic Fields
  • Materials
  • Measurement
  • Phase
  • Phase Diagrams
  • Specific Heat
  • Superconductivity
  • Superconductors
  • Transition Temperature
  • Transitions

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Superconducting Magnet Technology