Magnetic and thermal properties of Er(75)Dy(25) single crystals

TitleMagnetic and thermal properties of Er(75)Dy(25) single crystals
Publication TypeJournal Article
Year of Publication2011
AuthorsKhan M, Schlagel DL, Lograsso TA, Gschneidner KA, Pecharsky VK
Journal TitlePhysical Review B
Volume84
Pages134424
Date Published10
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberWOS:000296289500006
Keywordsalloys, DY, dysprosium, erbium, HEAT-CAPACITY, LATTICE-PARAMETERS, low temperatures, phase-transition
Abstract

We report on an experimental study of the thermal and magnetic properties of Er(75)Dy(25) single crystals with magnetic fields applied parallel to the [0001] and [10 (1) over bar0] directions. The [0001] direction is the easy axis of magnetization, while the [10 (1) over bar0] direction is the hard axis of magnetization. Three major transitions are observed in the heat capacity, magnetization, and alternating current magnetic susceptibility data. A first-order transition is observed at similar to 30 K, and two second-order transitions occur at similar to 45 and similar to 110 K. The H-T phase diagrams constructed from the experimental data reveal that several magnetic phases, including ferromagnetic cone, ferromagnetic fan, and c axis-modulated phases, exist in an Er(75)Dy(25) single crystal. Both similarities and dissimilarities are observed in the H-T phase diagrams of Er(75)Dy(25) when compared to the H-T phase diagrams of pure Er single crystals.

DOI10.1103/PhysRevB.84.134424
Alternate JournalPhys. Rev. B