Random-field critical scattering at high magnetic concentration in the Ising antiferromagnet Fe(0.93)Zn(0.07)F2

TL;DR

This study investigates the critical scattering behavior of a high magnetic concentration Ising antiferromagnet, revealing equilibrium neutron scattering line shapes suitable for analyzing random-field Ising model critical phenomena.

Contribution

It demonstrates that Fe(0.93)Zn(0.07)F2 exhibits equilibrium critical scattering without hysteresis, enabling precise study of random-field Ising model critical behavior.

Findings

No severe critical scattering hysteresis at low temperatures

Suitable for equilibrium neutron scattering analysis

Provides insights into random-field Ising critical phenomena

Abstract

The high magnetic concentration Ising antiferromagnet Fe(0.93)Zn(0.07)F2 does not exhibit the severe critical scattering hysteresis at low temperatures observed in all lower concentration samples studied. The system therefore provides equilibrium neutron scattering line shapes suitable for determining random-field Ising model critical behavior.