ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The field, H≤5 T, and temperature, T≥2 K, dependence of the remanent magnetization μ of the diluted Ising antiferromagnet Fe0.6Zn0.4F2 has been investigated utilizing a superconducting quantum interference device magnetometer. The results at low temperatures, where there is no growth of random field domains after the field removal, are analyzed according to μ=AHx(T ln t/t0)−Ψ+B, where the two terms are domain wall and volume contributions to the remanent magnetization, respectively. It is found that Ψ decreases continuously with decreasing temperature, and reaches a value of ≈0.15 at 3 K. The field exponent x is found to decrease with increasing temperature, attaining values between 2 and 3. The results show a more complex behavior of the low-temperature remanent magnetization than a model proposed by Nattermann and Vilfan which predicts constant values of the exponents: Ψ≈0.4 and x≈2.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.355682
