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An element specific investigation of the disorder induced phase transition in Fe60Al40 thin films driven by ion irradiationдоклад на конференции
- Авторы: Eggert B., Wende H., Smekhova A., Szyjka Th, Bali R., Ollefs K., Salamon S., Wilhelm F., Banerjee R., Rogalev A., Weschke E., Lindner J., Sanyal B., Schmitz-Antoniak C., La Torre E.
- Международная Конференция : DPG-Frühjahrstagung 2017
- Даты проведения конференции: 19-24 марта 2017
- Дата доклада: 24 марта 2017
- Тип доклада: Стендовый
- Докладчик: Eggert B.
- Место проведения: Дрезден, Германия
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Аннотация доклада:
Chemically ordered Fe60Al40 in the B2 structure shows weak ferromagnetism, while the disordered phase with the A2 structure exhibits a ferromagnetic state. Correspondingly the transition leads to an increase of the effective number of Fe-Fe nearest neighbors and of the lattice constant [1]. This phase transition can be driven by ion irradiation. In this work we investigate Fe60Al40 thin films before and after 10 and 20 keV Ne+ irradiation by means of X-ray magnetic circular dichroism (XMCD) at the Fe L2,3- and K-edge to analyze the microscopic magnetic structure. For a comparison magnetometry was used concerning the depth-profile of the induced magnetism [2,3]. These results are correlated to the modified structural properties. [1] J. Fassbender et al. Phys. Rev. B 2008, 77, 174430 [2] R. Bali et al. Nano Lett. 2014, 14 (2), pp 435-441 [3] N. Tahir et al. Phys. Rev. B 2015, 92, 144429
- Добавил в систему: Смехова Алевтина Геннадьевна