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Temperature and magnetic-field dependences of the resistivity of Ga-doped CdCr2Se4 single crystalsстатья
- Авторы: Below K.P., Koroleva L.I., Tovmasyan L.N.
- Журнал: Soviet Journal of Experimental and Theoretical Physics
- Том: 46
- Номер: 6
- Год издания: 1977
- Первая страница: 1206
- Последняя страница: 1210
- Аннотация: The electrical resistivity ro of Cd(1-x)GaxCr2Se4 single crystals (x = 0.017, 0.019, 0.037. 0.048, and 0.091)was investigated in the temperature range 4.2-100 K in magnetic fields 0-50 kOe. The dependence ro(T) wae found to be nonmonotonic with a minimum below the Curie point T_c and a maximum in the region of T_c. The position of the maximum of the ro(T) curve shifted toward higher temperatures on increase of the magnetic field. In the region of the minimum, and particularly near the maximum, the behavior of ro(T) indicated a giant negative magnetoresistance: ro in H = 50 kOe near T_c was one or two orders of magnitude less than ro in H = 0. The observed anomalies were attributed to the presence of ferrons in this compound.
- Добавил в систему: Королёва Людмила Ивановна