TY - JOUR
T1 - Physical properties of Ce 3-xTe 4 below room temperature
AU - May, Andrew F.
AU - McGuire, Michael A.
AU - Cantoni, Claudia
AU - Sales, Brian C.
PY - 2012/7/23
Y1 - 2012/7/23
N2 - The physical properties of polycrystalline Ce 3-xTe 4 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-xTe 4 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 Ce 3Te 4 are observed to be similar to those in La 3Te 4. 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 -1 at 200 K.
AB - The physical properties of polycrystalline Ce 3-xTe 4 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-xTe 4 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 Ce 3Te 4 are observed to be similar to those in La 3Te 4. 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 -1 at 200 K.
UR - http://www.scopus.com/inward/record.url?scp=84864617056&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.86.035135
DO - 10.1103/PhysRevB.86.035135
M3 - Article
AN - SCOPUS:84864617056
SN - 1098-0121
VL - 86
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 3
M1 - 035135
ER -