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Pressure, temperature, and magnetic-field effects on the transport properties of Cd0.7Mn0.3GeAs2

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Abstract

The resistivity, Hall coefficient, and magnetoresistance ratio of the ferromagnetic semiconductor Cd0.7Mn0.3GeAs2 have been measured as functions of pressure, temperature, and magnetic field. The ρ(p) and R H(p) curves point to a structural insulator-metal phase transition under both increasing and decreasing pressure. The temperature dependences of ρ and R H show anomalies, which are interpreted as a ferromagnetic-paramagnetic phase transition. Cd0.7Mn0.3GeAs2 is shown for the first time to have a negative magnetoresistance under pressure.

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Authors and Affiliations

  1. Institute of Physics, Dagestan Scientific Center, Russian Academy of Sciences, ul. Yaragskogo 94, Makhachkala, 367003, Dagestan, Russia

    A. Yu. Mollaev, I. K. Kamilov, R. K. Arslanov, U. Z. Zalibekov, T. R. Arslanov, E. S. Ibaev & V. M. Novotortsev

  2. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia

    S. F. Marenkin

Authors
  1. A. Yu. Mollaev
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  2. I. K. Kamilov
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  3. R. K. Arslanov
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  4. U. Z. Zalibekov
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  5. T. R. Arslanov
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  6. E. S. Ibaev
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  7. V. M. Novotortsev
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  8. S. F. Marenkin
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Correspondence to A. Yu. Mollaev.

Additional information

Original Russian Text © A.Yu. Mollaev, I.K. Kamilov, R.K. Arslanov, U.Z. Zalibekov, T.R. Arslanov, E.S. Ibaev, V.M. Novotortsev, S.F. Marenkin, 2010, published in Neorganicheskie Materialy, 2010, Vol. 46, No. 6, pp. 645–648.

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Mollaev, A.Y., Kamilov, I.K., Arslanov, R.K. et al. Pressure, temperature, and magnetic-field effects on the transport properties of Cd0.7Mn0.3GeAs2 . Inorg Mater 46, 571–573 (2010). https://doi.org/10.1134/S0020168510060014

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  • DOI: https://doi.org/10.1134/S0020168510060014

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