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Temperature and magnetic field-dependent x-ray powder diffraction study of dysprosium

TitleTemperature and magnetic field-dependent x-ray powder diffraction study of dysprosium
Publication TypeJournal Article
Year of Publication2008
AuthorsChernyshov AS, Mudryk Y, Pecharsky VK, Gschneidner KA
Journal TitlePhysical Review B
Volume77
Pages094132
Date PublishedMar
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberISI:000254542500064
Keywordscrystal structure, DY, LATTICE, phase-diagram, TRANSITIONS
Abstract

An x- ray powder diffraction study of polycrystalline Dy was performed over the temperature interval from 5 to 300 K in applied magnetic fields up to 40 kOe. A complex first- order magnetostructural transformation, which occurs below similar to 8 kOe and above similar to 20 kOe, is decoupled into a first- order magnetic ( helix- fan ) transition and a second- order magnetostructural ( hexagonal- orthorhombic ) transition between similar to 135 and similar to 175 K in magnetic fields between similar to 8 and similar to 20 kOe. The transition to the ferromagnetic ( FM ) state is always accompanied by an orthorhombic distortion of the hexagonal lattice, including a transition from the paramagnetic ( PM ) to the FM state in magnetic fields exceeding 20 kOe.
DOI10.1103/PhysRevB.77.094132
Alternate JournalPhys. Rev. B