Specific heat properties of filled skutterudite compound <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si3.gif" overflow="scroll"><mml:msub><mml:mrow><mml:mi>PrRu</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mi>As</mml:mi></mml:mrow><mml:mrow><mml:mn>12</mml:mn></mml:mrow></mml:msub></mml:math>
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説明
Abstract We report the specific heat of the filled skutterudite compound PrRu 4 As 12 down to 0.2 K . The temperature dependence of the specific heat divided by temperature C / T in PrRu 4 As 12 decreases monotonically down to 2.3 K , then shows a jump due to the superconducting transition. The electronic specific heat coefficient γ of PrRu 4 As 12 , determined from high temperatures, is estimated to be ∼ 100 mJ / K 2 mol . The value of γ in PrRu 4 As 12 is close to that in LaRu 4 As 12 . The electronic entropy determined from the experiment is only ∼ 10 % of R ln 2 .
収録刊行物
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- Journal of Magnetism and Magnetic Materials
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Journal of Magnetism and Magnetic Materials 310 232-234, 2007-03-01
Elsevier BV