Magnetoresistive properties of nanostructured magnetic metals, manganites, and magnetic semiconductors


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We consider methods for controlling magnetoresistive parameters of magnetic metal superlattices, manganites, and magnetic semiconductors. By reducing the thickness of ferromagnetic layers in superlattices (e.g., Fe layers in Fe/Cr superlattices), it is possible to form superparamagnetic clustered–layered nanostructures with a magnetoresistance weakly depending on the direction of the external magnetic field, which is very important for applications of such type of materials. Producing Mn vacancies and additionally annealing lanthanum manganites in the oxygen atmosphere, it is possible to increase their magnetoresistance by more than four orders of magnitude. By changing the thickness of pn junction in the structure of ferromagnetic semiconductors, their magnetoresistance can be increased by 2–3 orders of magnitude.

Sobre autores

N. Solin

Mikheev Institute of Metal Physics, Ural Branch

Autor responsável pela correspondência
Email: solin@imp.uran.ru
Rússia, ul. S. Kovalevskoi 18, Yekaterinburg, 620990

L. Romashev

Mikheev Institute of Metal Physics, Ural Branch

Email: solin@imp.uran.ru
Rússia, ul. S. Kovalevskoi 18, Yekaterinburg, 620990

S. Naumov

Mikheev Institute of Metal Physics, Ural Branch

Email: solin@imp.uran.ru
Rússia, ul. S. Kovalevskoi 18, Yekaterinburg, 620990

A. Saranin

Institute of Automation and Control Processes, Far East Branch

Email: solin@imp.uran.ru
Rússia, ul. Radio 5, Vladivostok, 690041

A. Zotov

Institute of Automation and Control Processes, Far East Branch

Email: solin@imp.uran.ru
Rússia, ul. Radio 5, Vladivostok, 690041

D. Olyanich

Institute of Automation and Control Processes, Far East Branch

Email: solin@imp.uran.ru
Rússia, ul. Radio 5, Vladivostok, 690041

V. Kotlyar

Institute of Automation and Control Processes, Far East Branch

Email: solin@imp.uran.ru
Rússia, ul. Radio 5, Vladivostok, 690041

O. Utas

Institute of Automation and Control Processes, Far East Branch

Email: solin@imp.uran.ru
Rússia, ul. Radio 5, Vladivostok, 690041

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