ISSN:
1090-6487
Keywords:
75.50.Ee
;
75.30.Fv
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Neutron diffraction investigations have shown that a 2% substitution Fe atoms for Pd radically alters the magnetic structure of UPd2Ge2. If the magnetic structure in the undoped compound at T〉50 K consists of a longitudinal spin density wave (LSDW) with “square” modulation, then in polycrystalline U(Pd0.98Fe0.02)2Ge2 a “simple” antiferromagnetic (AF) phase is observed below 65 K and a sinusoidally modulated LSDW-AF phase is observed between 65 K and the Neel temperature T N =135 K. In the interval 65〉 T〉135 K the magnetic cell is incommensurate with the crystal cell, with the exception of the point T=93 K, where the wave vector of the magnetic structure passes through a “commensurate” value equal to 0.75. Below T N the magnetic moments of the uranium atoms are always parallel to the tetragonal axis c of the unit cell.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1134/1.567575
