THE SPECIFIC HEAT OF FEC12 . 4H20 BETWEEN 1.1 AND 20 K

Abstract

The specific heat of FeCl2.4H2O was measured between 1.1 and 20 K. A lambda-type anomaly is found at 1.26 K, the antiferromagnetic Neel point whose existence was inferred from previous observations of the magnetic susceptibility. An anomaly of the Schottky type is also found having its rounded maximum at about 3 K. It was possible to effect a reasonable separation of the lattice specific heat from the measured total and thus to determine the parameters of the Schottky anomaly. These anomalies are found to be consistent with the splitting of the spin quintet ground state of the Fe(++) ion into a lower doublet and upper triplet separated by about 5.7/cm. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 22, 1961
Accession Number
AD0262900

Entities

People

  • A.f. Cohen
  • J.h. Schelleng
  • S.a. Friedberg

Organizations

  • Carnegie Institute of Technology

Tags

DTIC Thesaurus Topics

  • Ground State
  • Magnetic Properties
  • Neel Temperature
  • Observation
  • Physical Properties
  • Specific Heat
  • Splitting

Readers

  • Materials Science and Engineering.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • AI & ML
  • AI & ML - Bayesian Inference