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Manganese-doped CdGeAs2, ZnGeAs2 and ZnSiAs2 chalcopyrites: a new advanced materials for spintronicsстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Morozov A., Koroleva L., Zashchirinskii D., Khapaeva T., Marenkin S., Fedorchenko I., Szymczak R., Krzymanska B.
- Журнал: Solid State Phenomena
- Том: 169
- Номер: 169
- Год издания: 2011
- Первая страница: 31
- Последняя страница: 34
- DOI: 10.4028/www.scientific.net/ssp.168-169.31
- Аннотация: Based on the Mn-doped chalcopyrites CdGeAs2, ZnGeAs2 and ZnSiAs2 new dilute magnetic semicomductors with the p-type conductivity were produced. Magnetization, electrical resistivity and Hall effect of these compositions were studied. Their temperature dependences of magnetization are similar in form in spite of a complicated character, which is controller by the concentration and momility of the charge carriers. Thus, for T<15 K, these curves are characteristic of superparamagnets and for T>15 K, of a frustrated ferromagnet. In compounds with Zn these two states are diluted by a spinglass-like state.This specific feature is ascribed to attraction of Mn ions occupying neighboring sites and to competition between the carrier-mediated exchange and superexchange interactions. The Curie temperatures of these compounds are above room temperature. These are the highest Curie temperatures in the A^iiB^ivC^v_2:Mn systems.
- Добавил в систему: Королёва Людмила Ивановна