LOW Temperature Resistivity of Yttrium-Based Alloys Containing Small Amounts of Rare Earth Metals
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概要
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The resistivity of the dilute alloys of rare earth metals with yttrium has been measured at low temperatures. The result is in qualitative agreement with the recent theories due to Kondo and others on the s-d or s-f scattering. The effective s-f exchange integrals for various rare-earth solutes have been derived from the analysis of the resistivity data and compared with the reported values in other matrices. The integral for Ce is negative, leading to a resistance minimum, while those for heavier rare earths are positive. The sign of the integral has been discussed in terms of the mixing of conduction electrons with localized 4f electrons. The increase of the residual resistivity due to added rare earths depends upon the number of 4f electrons of the solute in a complicated way and is anomalously large for lighter rare earths such as La, Ce, and Pr.
- 社団法人日本物理学会の論文
- 1965-12-05
著者
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Sugawara Tadashi
The Institute For Soild State Physics The University Of Tokyo
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Sugawara Tadashi
The Institute For Solid State Physics University Of Tokyo
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