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Title: Crystal growth, electronic structure, and properties of Ni-substituted FeGa{sub 3}

Abstract

Crystals of the Fe{sub 1−x}Ni{sub x}Ga{sub 3} limited solid solution (x<0.045) have been grown from gallium flux. We have explored the electronic structure as well as magnetic and thermoelectric properties of Fe{sub 0.975}Ni{sub 0.025}Ga{sub 3} in comparison with Fe{sub 0.95}Co{sub 0.05}Ga{sub 3}, following the rigid band approach and assuming that one Ni atom donates twice the number of electrons as one Co atom. However, important differences between the Co- and Ni-doped compounds are found below 620 K, which is the temperature of the metal-to-insulator transition for both compounds. We have found that Fe{sub 0.975}Ni{sub 0.025}Ga{sub 3} displays lower degree of spatial inhomogeneity on the local level and exhibits diamagnetic behavior with a broad shallow minimum in the magnetic susceptibility near 35 K, in sharp contrast with the Curie–Weiss paramagnetism of Fe{sub 0.95}Co{sub 0.05}Ga{sub 3}. Transport measurements have shown the maximum of the thermoelectric figure-of-merit ZT of 0.09 and 0.14 at 620 K for Fe{sub 0.975}Ni{sub 0.025}Ga{sub 3} and Fe{sub 0.95}Co{sub 0.05}Ga{sub 3}, respectively. - Graphical abstract: Crystals of Ni-substituted FeGa{sub 3} up to 8 mm long were grown from gallium flux (see Figure for the temperature profile and crystal shape) that allowed studying magnetic and thermoelectric properties of the titlemore » solid solution.« less

Authors:
 [1];  [1];  [2];  [1];  [3];  [4];  [5];  [6]; ;  [7];  [1]
  1. Department of Chemistry, Lomonosov Moscow State University, Moscow 119991 (Russian Federation)
  2. (Estonia)
  3. National Institute of Chemical Physics and Biophysics, 12618 Tallinn (Estonia)
  4. (Germany)
  5. Faculty of Physics, Lomonosov Moscow State University, Moscow 119991 (Russian Federation)
  6. (Russian Federation)
  7. Laboratoire CRISMAT, UMR 6508 CNRS/ENSICAEN, F-14050 CAEN Cedex 4 (France)
Publication Date:
OSTI Identifier:
22584038
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 236; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; COMPARATIVE EVALUATIONS; CRYSTAL GROWTH; CRYSTALS; DOPED MATERIALS; ELECTRONIC STRUCTURE; ELECTRONS; GALLIUM; INTERMETALLIC COMPOUNDS; MAGNETIC SUSCEPTIBILITY; PARAMAGNETISM; PERFORMANCE; POTASSIUM 35; SOLID SOLUTIONS; SOLIDS; THERMOELECTRIC PROPERTIES

Citation Formats

Likhanov, Maxim S., Verchenko, Valeriy Yu., National Institute of Chemical Physics and Biophysics, 12618 Tallinn, Bykov, Mikhail A., Tsirlin, Alexander A., Experimental Physics VI, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, 86135 Augsburg, Gippius, Andrei A., Shubnikov Institute of Crystallography, Russian Academy of Science, 119333, Moscow, Berthebaud, David, Maignan, Antoine, and Shevelkov, Andrei V., E-mail: shev@inorg.chem.msu.ru. Crystal growth, electronic structure, and properties of Ni-substituted FeGa{sub 3}. United States: N. p., 2016. Web. doi:10.1016/J.JSSC.2015.08.028.
Likhanov, Maxim S., Verchenko, Valeriy Yu., National Institute of Chemical Physics and Biophysics, 12618 Tallinn, Bykov, Mikhail A., Tsirlin, Alexander A., Experimental Physics VI, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, 86135 Augsburg, Gippius, Andrei A., Shubnikov Institute of Crystallography, Russian Academy of Science, 119333, Moscow, Berthebaud, David, Maignan, Antoine, & Shevelkov, Andrei V., E-mail: shev@inorg.chem.msu.ru. Crystal growth, electronic structure, and properties of Ni-substituted FeGa{sub 3}. United States. doi:10.1016/J.JSSC.2015.08.028.
Likhanov, Maxim S., Verchenko, Valeriy Yu., National Institute of Chemical Physics and Biophysics, 12618 Tallinn, Bykov, Mikhail A., Tsirlin, Alexander A., Experimental Physics VI, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, 86135 Augsburg, Gippius, Andrei A., Shubnikov Institute of Crystallography, Russian Academy of Science, 119333, Moscow, Berthebaud, David, Maignan, Antoine, and Shevelkov, Andrei V., E-mail: shev@inorg.chem.msu.ru. Fri . "Crystal growth, electronic structure, and properties of Ni-substituted FeGa{sub 3}". United States. doi:10.1016/J.JSSC.2015.08.028.
@article{osti_22584038,
title = {Crystal growth, electronic structure, and properties of Ni-substituted FeGa{sub 3}},
author = {Likhanov, Maxim S. and Verchenko, Valeriy Yu. and National Institute of Chemical Physics and Biophysics, 12618 Tallinn and Bykov, Mikhail A. and Tsirlin, Alexander A. and Experimental Physics VI, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, 86135 Augsburg and Gippius, Andrei A. and Shubnikov Institute of Crystallography, Russian Academy of Science, 119333, Moscow and Berthebaud, David and Maignan, Antoine and Shevelkov, Andrei V., E-mail: shev@inorg.chem.msu.ru},
abstractNote = {Crystals of the Fe{sub 1−x}Ni{sub x}Ga{sub 3} limited solid solution (x<0.045) have been grown from gallium flux. We have explored the electronic structure as well as magnetic and thermoelectric properties of Fe{sub 0.975}Ni{sub 0.025}Ga{sub 3} in comparison with Fe{sub 0.95}Co{sub 0.05}Ga{sub 3}, following the rigid band approach and assuming that one Ni atom donates twice the number of electrons as one Co atom. However, important differences between the Co- and Ni-doped compounds are found below 620 K, which is the temperature of the metal-to-insulator transition for both compounds. We have found that Fe{sub 0.975}Ni{sub 0.025}Ga{sub 3} displays lower degree of spatial inhomogeneity on the local level and exhibits diamagnetic behavior with a broad shallow minimum in the magnetic susceptibility near 35 K, in sharp contrast with the Curie–Weiss paramagnetism of Fe{sub 0.95}Co{sub 0.05}Ga{sub 3}. Transport measurements have shown the maximum of the thermoelectric figure-of-merit ZT of 0.09 and 0.14 at 620 K for Fe{sub 0.975}Ni{sub 0.025}Ga{sub 3} and Fe{sub 0.95}Co{sub 0.05}Ga{sub 3}, respectively. - Graphical abstract: Crystals of Ni-substituted FeGa{sub 3} up to 8 mm long were grown from gallium flux (see Figure for the temperature profile and crystal shape) that allowed studying magnetic and thermoelectric properties of the title solid solution.},
doi = {10.1016/J.JSSC.2015.08.028},
journal = {Journal of Solid State Chemistry},
number = ,
volume = 236,
place = {United States},
year = {Fri Apr 15 00:00:00 EDT 2016},
month = {Fri Apr 15 00:00:00 EDT 2016}
}