New magnetic configuration in paramagnetic phase of HoCo2

TitleNew magnetic configuration in paramagnetic phase of HoCo2
Publication TypeJournal Article
Year of Publication2012
AuthorsBonilla CM, Calvo I, Herrero-Albillos J, Figueroa AI, Castan-Guerrero C, Bartolome J, Rodriguez-Velamazan JA, Schmitz D, Weschke E, Paudyal D, Pecharsky VK, Gschneidner KA, Bartolome F, Garcia LM
Journal TitleJournal of Applied Physics
Date Published04
Type of ArticleArticle
ISBN Number0021-8979
Accession NumberWOS:000303282401278

X-ray magnetic circular dichroism (XMCD) measurements on HoCo2 reveal the inversion of Co moment at temperatures higher than the critical temperature, T-c, showing that the net magnetization under a field of the Ho and Co sublattices remain antiparallel even above T-c. The Ho moment also changes its orientation to align antiparallel to the applied field at high temperature giving rise to a new magnetic configuration in the paramagnetic regime. Transverse susceptibility (TS) and small angle neutron scattering (SANS) measurements performed above T-c indicate the existence of sizable magnetic short-range correlated regions in HoCo2. First principles calculations based on spin polarized local-density approximation, LSDA+U have been performed to obtain insights on the origin of the short-range correlated volume. (C) 2012 American Institute of Physics. [doi:10.1063/1.3672258]

URL<Go to ISI>://WOS:000303282401278
Alternate JournalJ. Appl. Phys.