Exchange-bias field induced by surface inhomogeneities in ferromagnetic/charge-ordered bilayer structure
Exchange-bias field induced by surface inhomogeneities in ferromagnetic/charge-ordered bilayer structure
复制标题
铁磁/电荷有序双层结构中表面不均匀性引起的交换偏置场
DOI：
10.1016/j.jallcom.2015.07.086
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发表时间：
2015-11
影响因子：
6.2
通讯作者：
Tan Weishi
中科院分区：
文献类型：
--
作者：
Wang Haiou;Yang Weifeng;Su Kunpeng;Huo Dexuan;Tan Weishi
采用脉冲激光沉积法在（001）SrTiO 3衬底上制备了由铁磁金属Pr0.7Sr0.3MnO3（PSMO）和电荷有序绝缘体La0.5Ca0.5MnO3（LCMO）组成的双层外延结构。高分辨同步辐射X射线衍射表明外延层质量良好。然而，除了PSMO层，LCMO层和SrTiO 3衬底的衍射峰，我们观察到一个额外的肩峰，这可能是由于在PSMO/LCMO的成分不均匀性。此外，原子力显微镜测量显示在表面处存在非化学计量的大颗粒，赋予膜整体不均匀的组合物。这表明PSMO/LCMO的晶体结构变化是由于组成不均匀引起的。此外，磁性的研究表明，表面不均匀性和铁磁团簇在PSMO/LCMO界面可能会影响双层膜的铁磁性一起，调谐交换偏置效应。
Epitaxial bilayer structure consisting of ferromagnetic metallic Pr0.7Sr0.3MnO3(PSMO) and charge-ordered insulator La0.5Ca0.5MnO3(LCMO) was fabricated on (001) SrTiO3substrate by pulsed laser deposition. High-resolution synchrotron X-ray diffraction showed high quality of epitaxial layer. However, besides diffraction peaks from PSMO layer, LCMO layer and SrTiO3substrate, we observed an additional shoulder peak, which might stem from the inhomogeneities of composition in PSMO/LCMO. Further the atomic force microscopy measurement showed the presence of non-stoichiometric large particulates at surface, imparting an overall inhomogeneous composition to the film. This implied that the variation of crystalline structure of PSMO/LCMO occurred due to inhomogeneous composition. Moreover, studies on magnetic properties showed that surface inhomogeneities and ferromagnetic clusters at the PSMO/LCMO interface probably influenced the ferromagnetism of the bilayer film together, tuning exchange bias effect.
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影响因子：
3.2
作者：
P. Amirzadeh;H. Ahmadvand;P. Kameli;B. Aslibeiki;H. Salamati;A. Gamzatov;A. Aliev;I. Kamilov
通讯作者：
P. Amirzadeh;H. Ahmadvand;P. Kameli;B. Aslibeiki;H. Salamati;A. Gamzatov;A. Aliev;I. Kamilov
影响因子：
3.9
作者：
R. Cai;Yiqian Wang;Xuehua Liu;Weiwei Gao;Yunzhong Chen;Jirong Sun;Yanguo Wang
通讯作者：
R. Cai;Yiqian Wang;Xuehua Liu;Weiwei Gao;Yunzhong Chen;Jirong Sun;Yanguo Wang
影响因子：
3.7
作者：
Moutis, N;Christides, C;Niarchos, D
通讯作者：
Niarchos, D
影响因子：
6.2
作者：
Yi Yang;Y. Gong;S. Ma;C. Shen;Dunhui Wang;Q. Cao;Z. Zhong;Y. Du
通讯作者：
Yi Yang;Y. Gong;S. Ma;C. Shen;Dunhui Wang;Q. Cao;Z. Zhong;Y. Du
影响因子：
3.7
作者：
Y. Takamura;Fan Yang;N. Kemik;E. Arenholz;M. Biegalski;H. Christen
通讯作者：
Y. Takamura;Fan Yang;N. Kemik;E. Arenholz;M. Biegalski;H. Christen