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Electronic structure and unusual magnetic properties of diluted magnetic semiconductors Pb1-x-ySnxScyTeстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или ScopusДата последнего поиска статьи во внешних источниках: 8 апреля 2022 г.
- Авторы: Skipetrov E.P., Bogdanov E.V., Kovalev B.B., Skipetrova L.A., Knotko A.V., Emelyanov A.V., Taldenkov A.N., Slynko V.E.
- Журнал: Journal of Alloys and Compounds
- Том: 893
- Год издания: 2022
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 162330-1
- Последняя страница: 162330-7
- Номер статьи: 162330
- DOI: 10.1016/j.jallcom.2021.162330
- Аннотация: We synthesize a single-crystal Pb1-x-ySnxScyTe ingot and investigate the magnetic properties (2.0 < T < 300 K, B < 3 T) of alloys cut from it (x = 0.045–0.175, y < 0.04). At low temperatures, all samples exhibit paramagnetic contribution to the magnetization, which contradicts the generally accepted model of doping-induced rearrangement of the electronic structure of alloys and is most likely due to the paramagnetism of electrically neutral Sc2+ ions or their clusters. In p-type samples, a high-temperature ferromagnetic ordering with a Curie temperature as high as TC = 145–150 K is found, presumably due to the RKKY hole-mediated interaction of Sc2+ ions. We obtain dependences of the concentration of paramagnetic ions, of the paramagnetic Curie-Weiss temperature and of the Curie temperature TC on the concentrations of scandium and tin. At temperatures T < 100 K, the spin-glass-like behavior of magnetization and ferromagnetic hysteresis loops in the field dependences of magnetization are detected, indicating the formation of a mixed ferromagnetic–spin glass phase.
- Добавил в систему: Скипетров Евгений Павлович