Study of the Physical Properties of Metallic Glasses
at Cryogenic Temperatures
L. I. Chubraevaa, b
Translated by Sh. Galyaltdinov
aGrebenshchikov Institute of Silicate Chemistry,
Russian Academy of Sciences, St. Petersburg, 199034 Russia
bInstitute of Electrophysics and Electric Power Engineering,
Russian Academy of Sciences, St. Petersburg, Russia
Correspondence to: e-mail: lidiach@mail.ru
Received 10 October, 2017
Abstract—The problems of using metallic glasses for fabricating magnetic cores of cryogenic and superconducting electrotechnical devices, operating at low temperatures of 77 K, are considered. The experience of creating a number of devices, including electric generators, motors and transformers with HTSC windings, is analyzed. The advantages and disadvantages of magnetic cores from annealed tapes are considered. The results of the study of losses and magnetic characteristics of domestic amorphous and nanocrystalline alloys before and after high-temperature annealing are presented.
Keywords: metallic glasses, soft magnetic materials, amorphous alloys, nanocrystalline alloys, high-temperature superconductivity, low temperatures, electromechanical energy converters
DOI: 10.1134/S1087659618020037