What question did this study set out to answer?

To evaluate transverse magnetoresistance and test Kohler's rule in very dilute polycrystalline copper alloys containing cobalt, iron, or manganese at 4.2 K.

August 15, 1971Physical review. B, Solid state

Kohler's Rule and the Transverse Magnetoresistance of Very DiluteCuMn,CuFe, andCuCo Alloys

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Authors

CHC. M. HurdInstitute for Microstructural Sciences JAJ. E. A. AldersonThe University of Western Australia

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Implication

Experimental study reveals low-field deviations from Kohler's rule in dilute copper alloys, highlighting unexpected concentration dependence at very low impurity levels.

Key Points

To evaluate transverse magnetoresistance and test Kohler's rule in very dilute polycrystalline copper alloys containing cobalt, iron, or manganese at 4.2 K.
Measured transverse magnetoresistance at 4.2 K in polycrystalline copper alloys containing 9 to 4000 at. ppm of Co, Fe, or Mn.
Analyzed deviations from Kohler's rule under low-field conditions and measured the concentration dependence of negative magnetoresistance across different sample thicknesses.
Low-field deviations from Kohler's rule confirmed solute potential scattering anisotropies from Hall effect studies, yielding a relaxation-time ratio of 0.9 for Co in Cu.
Negative magnetoresistance in CuMn alloys remained concentration independent at higher concentrations but became concentration dependent below approximately 70 ppm.
Demonstrated that sample size effects exert a significant influence on magnetoresistance measurements in ultra-dilute alloy regimes.

Cite This Study

Hurd et al. (1971) studied this question.

synapsesocial.com/papers/6a884271b0d802598bf4e511 https://doi.org/10.1103/physrevb.4.1088

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Implication

Experimental study reveals low-field deviations from Kohler's rule in dilute copper alloys, highlighting unexpected concentration dependence at very low impurity levels.

Kohler's Rule and the Transverse Magnetoresistance of Very DiluteCuMn,CuFe, andCuCo Alloys

Discussion

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Implication

Key Points

Cite This Study

Kohler's Rule and the Transverse Magnetoresistance of Very DiluteCuMn,CuFe, andCuCo Alloys

Discussion

Member takes

Implication

Key Points

Cite This Study

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