Incommensurate antiferromagnetism induced by a charge density wave in the cubic phase of TbGe2.85статья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 21 октября 2015 г.
Аннотация:Temperature dependencies of electrical resistivity, magnetic susceptibility,
heat capacity have been obtained in the cubic phase of TbGe2.85 (the AuCu3 structure),
synthesized at high pressure. The macroscopic measurements indicate that a charge density wave is formed below 145 K and an antiferromagnetic ordering is realized below 19 K.
Hyperfine interaction data obtained with the time differential perturbed angular correlation method with 111Cd probes inserted in the TbGe2.85 lattice suggest that the charge density wave is incommensurate in the temperature region 19-145 K, but becomes commensurate below 19 K.
The neutron diffraction reveals a complex antiferromagnetic spiral structure in the magnetically
ordered phase.
We discuss relations between the charge density wave and helical ordering in TbGe2.85 and TbPd3.