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The Effect of Structural Inhomogeneities and Gas-Forming Impurities on the Functional Properties of High Purity Rare-Earth Metals

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Abstract

Rare-earth metals (REM) gadolinium and dysprosium, and also the Gd–H and Dy–H systems in which magnetic order–order and order–disorder phase transitions are accompanied by significant magnetocaloric effect, have been studied. The materials have been prepared in various structural states. It is stated that there is a substantial difference of their functional properties in the dependence on the features of the structural state and also on the existence of a gas-forming impurity. It has been proved experimentally and theoretically that the Curie temperatures of Gd samples with grain sizes of ~200 nm increases as a result of hydrogenation, while the magnetic phase transition temperatures of Dy are almost unchanged Inhomogeneities.

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Authors and Affiliations

  1. Moscow State University, Moscow, 119991, Russia

    I. S. Tereshina

  2. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, 119991, Russia

    V. B. Chzhan

Authors
  1. I. S. Tereshina
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  2. V. B. Chzhan
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Correspondence to I. S. Tereshina.

Additional information

Original Russian Text © I.S. Tereshina, V.B. Chzhan, 2018, published in Fizika Tverdogo Tela, 2018, Vol. 60, No. 6, pp. 1103–1107.

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Tereshina, I.S., Chzhan, V.B. The Effect of Structural Inhomogeneities and Gas-Forming Impurities on the Functional Properties of High Purity Rare-Earth Metals. Phys. Solid State 60, 1115–1119 (2018). https://doi.org/10.1134/S1063783418060331

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  • DOI: https://doi.org/10.1134/S1063783418060331

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