期刊
JETP LETTERS
卷 90, 期 1, 页码 59-63出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0021364009130128
关键词
-
资金
- Russian Foundation for Basic Research [08-02-00098, 08-02-91952-NNIO, 07-02-00963]
- DFG [436 RUS 113/936/0-1]
An experimental study of magnetic and superconducting properties of a trilayer Ni/V/Ni thin film system grown on single-crystalline MgO(001) substrate is reported. The field dependence of the superconducting transition temperature T-c for samples comprising Ni layers with similar values of the coercive field H-c reveals no anomalies. However, in samples with different thicknesses of the nickel layers the difference in H-c amounts up to Delta H-c similar to 1.8 kOe, thus enabling to manipulate the relative orientations of the layers' magnetization by an external magnetic field. Surprisingly, for these samples the T-c for the parallel orientation of the magnetizations of the Ni layers is higher, in a certain magnetic field range, than for the antiparallel one, at odds with theoretical predictions. Possible reasons of this contradiction are discussed.
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