Large Random-Field Behavior above the Vacancy Percolation Concentration Threshold: Fe0.84Zn0.16F2

Takuo Sakon, Satoshi Awaji, Mitsuhiro Motokawa, David P. Belanger

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

High-field magnetization measurements, with H ≤ 20T, yield the random-field Ising model (RFIM) specific heat behavior near the H-T phase boundary in Fe0.84Zn0.16F2. This sample, with x greater than the magnetic vacancy percolation threshold, Xv = 0.754, is in the concentration range that shows equilibrium neutron scattering line shapes at low temperature and |q| > 0, unlike samples for which x < Xv. The temperature derivative of the uniform magnetization shows the expected low-field random-field Ising scaling behavior for H ≤ 18 T. At H = 20 T, however, the peak temperature and amplitude are significantly suppressed, indicating a high-field RFIM region of the H-T phase diagram.

Original languageEnglish
Pages (from-to)411-413
Number of pages3
Journaljournal of the physical society of japan
Volume71
Issue number2
DOIs
Publication statusPublished - 2002 Feb 1

Keywords

  • FeZnF
  • High magnetic fields
  • Magnetization
  • Random-field Ising model

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Large Random-Field Behavior above the Vacancy Percolation Concentration Threshold: Fe<sub>0.84</sub>Zn<sub>0.16</sub>F<sub>2</sub>'. Together they form a unique fingerprint.

Cite this