ISSN:
1089-7550
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
Cooling in a weak magnetic field the random magnetic anisotropy (RMA) spin glasses DyxY1−xAl2 (x=0.3, 0.4) induces unidirectional and uniaxial anisotropies, on top of the cubic coherent one. The unidirectional anisotropy constant KRMAu has been determined at 3.8 K, amounting at zero applied field 127 and 255 J/m3 for x=0.3 and 0.4, respectively. The predicted model ratio between KRMAu and the uniaxial constant KRMAa, i.e., KRMAa=2KRMAu, has been confirmed. As by-product the relevant RMA parameter D2/J, where D is the RMA crystal field strength and J, the exchange constant has been determined, as well as separate estimates of D and J.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.355536
Permalink