Special Issue-2020

STUDY OF THE MAGNETIC PROPERTIES OF THE RARE EARTH METAL-INDIUM SYSTEM AT HIGH TEMPERATURES (20151560)

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Abstracts : The Faraday method was the first to study the temperature dependence of the magnetic susceptibility [χ(T)] rare earth metals (РЗМ = Gd, Tb, Dy, Ho, Er, Tm) and their compounds with In in a wide temperature range of 20-17000C, covering the solid state, the melting process and the liquid state of these compounds. It was found that for all studied compounds, the χ (Т) dependence, with the exception of compounds of the Gd-In system, obeys a linear law, and for compounds of the Gd-In system, it obeys the modified Curie-Weiss law, both in solid and liquid states. By dependence χ^(-1)(Т) compounds, the paramagnetic Curie temperature was calculated θ_P Curie-Weiss constant C, temperature-independent component of susceptibility χ_0 and the effective numbers of magnetic moments μ_эфф , per atom of rare-earth metals. It is shown that the paramagnetic states of the studied samples are satisfactorily described by the Van Vleck theory of paramagnetism. For the first time, the prediction of the theory of exchange interactions of the Ruderman-Kittel-Kasuya-Yosida type (RKKI) on the existence of a direct proportional dependence of the experimental values of θ_P on the de Gennes factor for the equiatomic compounds under study, similar to that of pure TREM, was confirmed semi-empirically. On the whole, it has been established that for the compounds of TREM with In, as in pure TREM, an exchange interaction of the RKKY type is characteristic.
Pages : 16-26
Downloads : 36
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Modified Date : 2020-08-07
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Shakarov Kholik Ochilovich , Usarov Uktam Turatovich , "STUDY OF THE MAGNETIC PROPERTIES OF THE RARE EARTH METAL-INDIUM SYSTEM AT HIGH TEMPERATURES", JournalNX - A Multidisciplinary Peer Reviewed Journal, Special Issue-2020, ISSN : 2581-4230, Page No. 16-26
Peer reviewed