发布时间：2025-04-30

论文名称：Formation of Ruddlesden–Popper faults and their effect on magnetic properties in Pr0.5Sr0.5CoO3 thin films

发表刊物：ACS Applied Materials & Interfaces

摘要：Epitaxial Pr0.5Sr0.5CoO3 thin films have been grown on single-crystalline (La0.289Sr0.712)(Al0.633Ta0.356)O3(001) substrates by the pulsed laser deposition technique. The magnetic properties and microstructure of these films are investigated. It is found that Ruddlesden–Popper faults (RP faults) can be introduced in the films by changing the laser repetition rate. The segregation of Pr at the RP faults is characterized by atomic-resolution chemical mapping. The formation of the RP faults not only contributes to the epitaxial strain relaxation but also significantly decreases the ferromagnetic long-range order of the films, resulting in lower magnetizations than those of the fault-free films. Our results provide a strategy for tuning the magnetic properties of cobalt-based perovskite films by modifying the microstructure through the film growth process.

合写作者：H.M. Jing, S. Cheng, S.B. Mi, L. Lu, M. Liu, S.D. Cheng, C.L. Jia

卷号：10

页面范围：1428-1433

是否译文：否

发表时间：2018-01-15