2005/10/14 by E. A. Yelland, S. J. C. Yates, O. Taylor +3 · 63 citations
Materials Science · Mathematics · Physics and Astronomy · #Anomaly (physics) #Condensed matter physics #Curie temperature #Electrical resistivity and conductivity #Ferromagnetism #Geometry #Magnetic and transport properties of perovskites and related materials #Magnetic field #Magnetization #Materials science #Mathematics #Nuclear magnetic resonance #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Rare-earth and actinide compounds #Scaling #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.72.184436
published in Physical Review B 72(18) (American Physical Society) · submitted to PRB
arxiv created 2005/10/14 · openalex publication_date 2005/11/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The low Curie temperature (TC\ensuremath≈28\phantom\rule0.3em0exK) and small ordered moment (M0\ensuremath≈0.17\phantom\rule0.3em0ex\ensuremathμB\phantom\rule0.3em0exf.u.^\ensuremath-1) of ZrZn2 make it one of the few examples of a weak itinerant ferromagnet. We report the results of susceptibility, magnetization, resistivity, and specific heat measurements made on high-quality single crystals of ZrZn2. From magnetization scaling in the vicinity of TC (0.001<\ensuremath|T\ensuremath-TC\ensuremath|∕TC<0.08), we obtain the critical exponents \ensuremathβ=0.52\ifmmode±\else\textpm\fi0.05 and \ensuremathδ=3.20\ifmmode±\else\textpm\fi0.08, and TC=27.50\ifmmode±\else\textpm\fi0.05\phantom\rule0.3em0exK. Low-temperature magnetization measurements show that the easy axis is [111]. Resistivity measurements reveal an anomaly at TC and a non-Fermi liquid temperature dependence \ensuremathρ(T)=\ensuremathρ0+ATn, where n=1.67\ifmmode±\else\textpm\fi0.02, for 1<T<14\phantom\rule0.3em0exK. The specific heat measurements show a mean-field-like anomaly at TC. We compare our results to various theoretical models.