Destruction of spin cycloid in (111)c-oriented BiFeO3 thin films by epitaxial constraint : enhanced polarization and release of latent magnetization

In BiFeO3 films, it has been found that epitaxial constraint results in the destruction of a space...

وصف كامل

محفوظ في:
التفاصيل البيبلوغرافية
المؤلفون الرئيسيون: Bai, Feiming, Wang, Junling, Wuttig, M., Li, Jiefang, Wang, Naigang, Pyatakov, A. P., Zvezdin, A. K., Cross, L. E., Viehland, D.
مؤلفون آخرون: School of Materials Science & Engineering
التنسيق: مقال
اللغة:English
منشور في: 2011
الموضوعات:
الوصول للمادة أونلاين:https://hdl.handle.net/10356/91324
http://hdl.handle.net/10220/6907
الوسوم: إضافة وسم
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المؤسسة: Nanyang Technological University
اللغة: English
الوصف
الملخص:In BiFeO3 films, it has been found that epitaxial constraint results in the destruction of a space modulated spin structure. For (111)c films, relative to corresponding bulk crystals, it is shown (i) that the induced magnetization is enhanced at low applied fields; (ii) that the polarization is dramatically enhanced; whereas, (iii) the lattice structure for s111dc films and crystals is nearly identical. Our results evidence that eptiaxial constraint induces a transition between cycloidal and homogeneous antiferromagnetic spin states, releasing a latent antiferromagnetic component locked within the cycloid.