Nearly itinerant ferromagnetism in CaNi2 and CaNi3

A. Jesche; K. W. Dennis; A. Kreyssig; P. C. Canfield

doi:10.1103/PhysRevB.85.224432

Nearly itinerant ferromagnetism in CaNi2 and CaNi3

Strongly Correlated Electrons 2012-07-02 v2 Materials Science

Authors: A. Jesche , K. W. Dennis , A. Kreyssig , P. C. Canfield

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Abstract

Single crystals of CaNi2 and CaNi3 were 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 Z = 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^3lnT was also observed.

Keywords

itinerant ferromagnetism CaNi2 CaNi3 Stoner factor magnetic susceptibility ferromagnetic fluctuations specific heat

Cite

@article{arxiv.1204.6355,
  title  = {Nearly itinerant ferromagnetism in CaNi2 and CaNi3},
  author = {A. Jesche and K. W. Dennis and A. Kreyssig and P. C. Canfield},
  journal= {arXiv preprint arXiv:1204.6355},
  year   = {2012}
}

Comments

6 pages, 7 figures, minor corrections, accepted for publication in PRB

Nearly itinerant ferromagnetism in CaNi2 and CaNi3

Abstract

Keywords

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