ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The magnetic phase diagram of the crystalline dilute magnets TbxY1−xAl2 has been determined, showing spin-glass reentrance into a quasiferromagnetic (QF) phase for xt ≥ 0.27 and T ≤ 8.6 K, the tricritical point. The effective percolation limit is xp=0.16 with a critical line separating the paramagnetic and QF regimes of exponent φp=1.1. No signs of saturation magnetization are found, nor of any clear divergence of the dc zero-field susceptibility. On the spin-glass side of these series (x〈0.27), the order parameters q (frozen local moment) and Δ (irreversibility parameter) have been determined from the field- and zero-field-cooled measured susceptibilities.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.348150