SciTech Connect

Title: Reinvestigation of long-range magnetic ordering in icosahedral Tb-Mg-Zn

Reinvestigation of long-range magnetic ordering in icosahedral Tb-Mg-Zn We present results of a study of possible magnetic ordering in the icosahedral phase of Tb-Mg-Zn probed by bulk magnetization measurements and neutron diffraction. Measurements on both crushed single grains and cast polycrystalline samples of Tb-Mg-Zn were performed. Magnetization measurements on both samples reveal only a spin-glass-like transition at approximately 5.8K. Neutron diffraction from the crushed single grains reveals only short-range magnetic ordering at low temperatures, with no evidence of the long-range magnetic ordering reported previously [Charrier, Ouladdiaf, and Schmitt, Phys. Rev. Lett. {bold 78}, 4637 (1997)]. Likewise, the cast polycrystalline samples exhibit primarily diffuse magnetic scattering at low temperature, but at least one relatively sharp diffraction peak was observed. Our results indicate that for single grain samples there is no long-range magnetic ordering and that, at best, the magnetic ordering in these quasicrystalline alloys is not very robust. {copyright} {ital 1998} {ital The American Physical Society}
Authors: ; ; ; ; ;
Publication Date:
OSTI Identifier:OSTI ID: 627918
Resource Type:Journal Article
Resource Relation:Journal Name: Physical Review, B: Condensed Matter; Journal Volume: 57; Journal Issue: 18; Other Information: PBD: May 1998
Country of Publication:United States
Language:English
Subject: 36 MATERIALS SCIENCE; TERBIUM ALLOYS; MAGNESIUM ALLOYS; ZINC ALLOYS; ORDER PARAMETERS; MAGNETIC PROPERTIES; MAGNETIZATION; NEUTRON DIFFRACTION; SPIN GLASS STATE; GRAIN GROWTH; TEMPERATURE RANGE 0000-0013 K