2012/07/06 by Andrew F. May, Michael A. McGuire, C. Cantoni +3
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Analytical Chemistry (journal) #Chemistry #Condensed matter physics #Ferromagnetism #Heat capacity #Magnetic and transport properties of perovskites and related materials #Magnetic field #Magnetization #Materials science #Phonon #Physics #Quantum mechanics #Rare-earth and actinide compounds #Seebeck coefficient #Thermal conductivity #Thermodynamics #Thermoelectric effect #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.86.035135
Submitted to Phys. Rev. B
arxiv created 2012/07/06 · openalex publication_date 2012/07/23 · arxiv updated 2015/06/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The physical properties of polycrystalline Ce_3\ensuremath-xTe4 were investigated by measurements of the thermoelectric properties, Hall coefficient, heat capacity, and magnetization. The fully filled, metallic x=0 compound displays a soft ferromagnetic transition near 4 K, and analysis of the corresponding heat capacity anomaly suggests a doublet ground state for Ce3+. The transition is suppressed to below 2 K in the insulating x=0.33 composition, revealing that magnetic order in Ce_3\ensuremath-xTe4 is driven by a Ruderman-Kittel-Kasuya-Yosida (RKKY)-type interaction. The thermoelectric properties trend with composition as expected from simple electron counting, and the transport properties in Ce3Te4 are observed to be similar to those in La3Te4. Trends in the low-temperature thermal conductivity data reveal that the phonons are efficiently scattered by electrons, while all compositions examined have a lattice thermal conductivity near 1.2 W/m K^\ensuremath-1 at 200 K.