Demagnetization experiments on some promising new compounds for very low-temperature refrigeration

B. M. Abraham*, J. B. Ketterson, P. R. Roach, E. R. Pfeiffer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

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 temperatures T* 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 of T* than that obtained with CMN. The problem of thermal equilibrium within the demagnetized sample is considered.

Original languageEnglish (US)
Pages (from-to)387-396
Number of pages10
JournalJournal of Low Temperature Physics
Volume14
Issue number3-4
DOIs
StatePublished - Feb 1 1974

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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