Magnetic anomalies in Gd2PdSi3 |
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Authors: | R Mallik E V Sampathkumaran P L Paulose H Sugawara and H Sato |
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Institution: | (1) Tata Institute of Fundamental Research, Homi Bhabha Road, 400005 Mumbai, India;(2) Department of Physics, Tokyo Metropoliton University, 192-03 Tokyo, Japan |
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Abstract: | The results of ac and dc magnetic susceptibility, thermopower and Hall effect measurements of a compound, Gd2PdSi3, establish that this compound orders magnetically below Tn = 20 K. Though the ordering appears to be of an antiferromagnetic-type, the paramagnetic Curie temperature is positive with
the magnitude being nearly the same as that of TN, suggestive of the existence of ferromagnetic correlations. The thermopower at 300 K is large, apparently due to Pd 4d electrons,
decreasing monotonically with temperature. There is a change in the sign of Hall constant well below TN Also considering the observation of Kondo-like characteristics above 21K earlier by us, the overall thermal, transport and
magnetic behaviour of this compound is interesting. |
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Keywords: | Gd2PdSi3 magnetic susceptibility thermopower Hall effect |
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