Effect of electrolyte components on the magnetic and magnetoresistive characteristics of Fe-containing plasma electrolytic oxide coatings on titanium


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The effect replacing Na3PO4 with Na2HPO4 in aqueous phosphate–borate–tungstate electrolyte that additionally contains Fe2(C2O4)3 on the magnetic and magnetoresistive characteristics of oxide coating/ titanium composites formed by means of plasma electrolytic oxidation (PEO) is investigated. It is established that PEO coatings with ferromagnetic characteristics form on titanium in an electrolyte containing Na3PO4 (pH ~ 11) upon adding iron(III) oxalate, while replacing Na3PO4 with Na2HPO4 and the respective drop in the pH of the base electrolyte down to 9.8 results in the formation of coatings with different magnetic characteristics. The correlation between changes in the values of the charge carriers’ activation energy and the magnetic susceptibility is demonstrated for the latter. An increase in the electric resistance of coatings in a magnetic field is observed, and the type of the magnetic resistance temperature dependence is established.

作者简介

V. Rudnev

Institute of Chemistry, Far-Eastern Branch; Far Eastern Federal University

编辑信件的主要联系方式.
Email: rudnevvs@ich.dvo.ru
俄罗斯联邦, Vladivostok, 690022; 690950

M. Adigamova

Institute of Chemistry, Far-Eastern Branch

Email: rudnevvs@ich.dvo.ru
俄罗斯联邦, Vladivostok, 690022

I. Tkachenko

Institute of Chemistry, Far-Eastern Branch

Email: rudnevvs@ich.dvo.ru
俄罗斯联邦, Vladivostok, 690022

V. Sergienko

Institute of Chemistry, Far-Eastern Branch

Email: rudnevvs@ich.dvo.ru
俄罗斯联邦, Vladivostok, 690022

K. Yanushkevich

Scientific-Practical Materials Research Center

Email: rudnevvs@ich.dvo.ru
白俄罗斯, Minsk, 220072

S. Aplesnin

Reshetnev Siberian State Aerospace University

Email: rudnevvs@ich.dvo.ru
俄罗斯联邦, Krasnoyarsk, 660037

I. Lukiyanchuk

Institute of Chemistry, Far-Eastern Branch

Email: rudnevvs@ich.dvo.ru
俄罗斯联邦, Vladivostok, 690022

V. Morozova

Institute of Chemistry, Far-Eastern Branch

Email: rudnevvs@ich.dvo.ru
俄罗斯联邦, Vladivostok, 690022

M. Medkov

Institute of Chemistry, Far-Eastern Branch

Email: rudnevvs@ich.dvo.ru
俄罗斯联邦, Vladivostok, 690022

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