Nearly itinerant ferromagnetism in CaNi2 and CaNi3

TitleNearly itinerant ferromagnetism in CaNi2 and CaNi3
Publication TypeJournal Article
Year of Publication2012
AuthorsJesche A, Dennis KW, Kreyssig A, Canfield PC
Journal TitlePhysical Review B
Volume85
Pages224432
Date Published06
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberWOS:000305678200006
Keywordsbehavior, heat, MAGNETIC-SUSCEPTIBILITY, PD, pressure, system
Abstract

Single crystals of CaNi2 and CaNi3 are successfully grown out of excess Ca. Both compounds manifest a metallic ground state with enhanced, temperature-dependent magnetic susceptibility. The relatively high Stoner factors of Z = 0.79 and 0.87 found for CaNi2 and CaNi3, respectively, reveal their close vicinity to ferromagnetic instabilities. The pronounced field dependence of the magnetic susceptibility of CaNi3 at low temperatures (T < 25 K) suggests strong ferromagnetic fluctuations. A corresponding contribution to the specific heat with a temperature dependence of T(3)lnT is also observed.

URL<Go to ISI>://WOS:000305678200006
DOI10.1103/PhysRevB.85.224432
Alternate JournalPhys. Rev. B