Magnetic and transport properties of as-prepared Mn2CoGa
Abstract
Magnetic and transport properties of as-prepared Mn2CoGa polycrystalline Heusler alloy were investigated. Results of magnetic measurements were found to agree well with literature data, i.e., the studied Mn2CoGa is a ferrimagnet with magnetic moment of 2.03 μB/f.u. and a high Curie temperature TC = 728 K. Measurements of transport properties revealed that electrical resistivity rho of Mn2CoGa is anomalously large (~250 μΩ.cm at room temperature) and demonstrates a complex temperature dependence. Specifically, in the measured temperature interval from 80 K to 375 K, the electrical resistivity is proportional to T2 up to T ~200 K while at higher temperatures rho can be fitted by rho(T) = A + B.exp(-CT) expression. These changes in the scattering mechanisms are accompanied by a change of the magnetoresistance sign from positive at T below ~200 K to negative at higher temperatures.
- Authors:
-
- National Univ. of Science and Technology, Moscow (Russian Federation)
- National Univ. of Science and Technology, Moscow (Russian Federation); National Research South Ural State Univ., Chelyabinsk (Russian Federation); Chelyabinsk State Univ. (Russian Federation)
- National Research South Ural State Univ., Chelyabinsk (Russian Federation)
- Indian Inst. of Technology (IIT), New Delhi (India)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- National Univ. of Science and Technology, Moscow (Russian Federation); National Research South Ural State Univ., Chelyabinsk (Russian Federation)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- Russian Science Foundation; USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division
- OSTI Identifier:
- 1502503
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Magnetism and Magnetic Materials
- Additional Journal Information:
- Journal Volume: 470; Journal Issue: C; Journal ID: ISSN 0304-8853
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Heusler alloys; electrical resistivity; half-metallic ferrimagnets; spintronics
Citation Formats
Seredina, M., Gavrikov, I., Gorshenkov, M., Taskaev, S., Dyakonov, A., Komissarov, A., Chatterjee, Ratnamala, Novosad, V., and Khovaylo, V. Magnetic and transport properties of as-prepared Mn2CoGa. United States: N. p., 2017.
Web. doi:10.1016/j.jmmm.2017.12.043.
Seredina, M., Gavrikov, I., Gorshenkov, M., Taskaev, S., Dyakonov, A., Komissarov, A., Chatterjee, Ratnamala, Novosad, V., & Khovaylo, V. Magnetic and transport properties of as-prepared Mn2CoGa. United States. https://doi.org/10.1016/j.jmmm.2017.12.043
Seredina, M., Gavrikov, I., Gorshenkov, M., Taskaev, S., Dyakonov, A., Komissarov, A., Chatterjee, Ratnamala, Novosad, V., and Khovaylo, V. Wed .
"Magnetic and transport properties of as-prepared Mn2CoGa". United States. https://doi.org/10.1016/j.jmmm.2017.12.043. https://www.osti.gov/servlets/purl/1502503.
@article{osti_1502503,
title = {Magnetic and transport properties of as-prepared Mn2CoGa},
author = {Seredina, M. and Gavrikov, I. and Gorshenkov, M. and Taskaev, S. and Dyakonov, A. and Komissarov, A. and Chatterjee, Ratnamala and Novosad, V. and Khovaylo, V.},
abstractNote = {Magnetic and transport properties of as-prepared Mn2CoGa polycrystalline Heusler alloy were investigated. Results of magnetic measurements were found to agree well with literature data, i.e., the studied Mn2CoGa is a ferrimagnet with magnetic moment of 2.03 μB/f.u. and a high Curie temperature TC = 728 K. Measurements of transport properties revealed that electrical resistivity rho of Mn2CoGa is anomalously large (~250 μΩ.cm at room temperature) and demonstrates a complex temperature dependence. Specifically, in the measured temperature interval from 80 K to 375 K, the electrical resistivity is proportional to T2 up to T ~200 K while at higher temperatures rho can be fitted by rho(T) = A + B.exp(-CT) expression. These changes in the scattering mechanisms are accompanied by a change of the magnetoresistance sign from positive at T below ~200 K to negative at higher temperatures.},
doi = {10.1016/j.jmmm.2017.12.043},
journal = {Journal of Magnetism and Magnetic Materials},
number = C,
volume = 470,
place = {United States},
year = {Wed Dec 13 00:00:00 EST 2017},
month = {Wed Dec 13 00:00:00 EST 2017}
}
Web of Science
Figures / Tables:
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Works referencing / citing this record:
Investigation of the structural competing and atomic ordering in Heusler compounds Fe 2 NiSi and Ni 2 FeSi under strain condition
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Figures / Tables found in this record: