Magnetism and Transport in YbMn2Sb2
R. Nirmala, S. K. Malik (TIFR, Mumbai, India), A. V. Morozkin, (Department of Chemistry, Moscow Lomonosov State University, Moscow, Russia),, K. G. Suresh (Department of Physics, IIT, Mumbai, India), H.-D. Kim, J.-Y., Kim (Pohang Accelerator Laboratory
TL;DR
This study reports the synthesis and characterization of YbMn2Sb2, a ferromagnetic intermetallic with metallic conductivity, notable magnetoresistance, and Yb valency close to 2, expanding understanding of magnetic and transport behaviors in rare earth compounds.
Contribution
It introduces a new YbMn2Sb2 compound with detailed magnetic, structural, and transport properties, highlighting its ferromagnetism and metallic behavior.
Findings
YbMn2Sb2 is ferromagnetic at room temperature.
Electrical resistivity shows metallic behavior.
13% positive magnetoresistance at 5 K in 9T field.
Abstract
A new ternary intermetallic compound, namely, YbMn2Sb2, has been synthesized and its magnetic and electrical transport properties have been studied in the temperature range of 2 to 300 K. This compound crystallizes in a trigonal, La2O2S type structure (space group P3bm1, No. 164) and is found to be ferromagnetically ordered at room temperature. The magnetism is attributed to the ordering of Mn sublattice. M5 xray absorption spectrum of YbMn2Sb2 obtained at room temperature suggests that the valency of Yb in this compound is close to 2. Electrical resistivity of this compound is metal like and a positive magnetoresistance of 13 percent is observed at 5 K in an applied field of 9T. Key words Rare earth intermetallics and alloys, Magnetic properties, Xray absorption spectroscopy, Electrical transport.
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