Low-Temperature Magnetoresistance in Magnesium and Aluminum Containing Small Concentrations of Manganese or Iron

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概要

• 論文の詳細を見る

• Magnetoresistance measurements in magnetic fileds up to 21 kOe have been made on Mg-Mn, Mg-Cd, Mg-Al, Al-Mn, and Al-Fe alloys in the temperature region of liquid helium. Magnesium alloys containing more than 0.1-at.% Mn which exhibit a resistance maximum and minimum in zero filed, show a negative magnetoresistance, whereas the more dilute samples (0.001-0.1 at. % Mn) show a positive magnetoresistance, the magnitude of which decreases with decreasing temperature. The magnesium alloys containing non-transition element impurities, as well as the aluminum alloys containing transition metal impurities, are found to obey Kohler's rule. From an analysis of these data it is found that the magnetoresistivity of a dilute alloy of magnesium containing manganese, can be considered as the sum of a normal positive magnetoresistivity (obeying Kohler's rule) and an anomalous term which is negative in sign, does not obey Kohler's rule and is presumably due to a magnetic scattering of the conduction electrons. Using values of thes s-d exchange integral and the Coulomb scattering integral derived from an analysis of the zero-field resistivity permits an explanation of the magnetoresistivity based on Kasuya's theory, at temperatures near the Neel point.

• 東北大学の論文

著者

• Muto Y.

  The Research Institute for Iron, Steel and Other Metals

• HEDGCOCK F.

  The Franklin Institute Laboratories for Research and Development

• Muto Y.

  The Research Institute For Iron Steel And Other Metals

関連論文

• Research and Development for Pressurized He II Cooled Superconducting Magnets(Part II. Several Instruments and Techniques Developed in HFLSM)
• Cryogenic Systems in High Field Laboratory for Superconducting Materials(Part I. Establishment and Tests of Hybrid Magnet System at HFLSM)
• Role of s-d Exchange Interactions in Dilute Alloys Exhibiting Both Low-Temperature Resistance Anomalies and Superconductivity
• Low-Temperature Magnetoresistance in Magnesium and Aluminum Containing Small Concentrations of Manganese or Iron
• On upper Critical Fields of Layered Superconductors Nb_Ta_xSe_2(Superconductivity・Intercalation)
• ANOMALOUSLY LARGE NEGATIVE MAGNETORESISTANCE OF 1T-TaS_2 AT ULTRA LOW TEMPERATURES(Phase Transition・Charge Density Wave)
• Magnetoresistances of Dilute Alloys of Manganese in Copper, Manganese in Zinc and Chromium in Zinc at Liquid Helium Temperatures

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