Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1798744 | Journal of Magnetism and Magnetic Materials | 2016 | 6 Pages |
Abstract
Bi0.9Gd0.1Fe0.9Co0.1O3 (BGFCO) films with thickness increasing from 318 to 877Â nm were successfully deposited on Pt(111)/Ti/SiO2/Si(100) substrates by radio frequency magnetron sputtering. X-ray diffraction patterns demonstrated that all BGFCO films had a single perovskite-type structure with highly (012) and (024) preferred orientations regardless of the film thickness. The crystalline quality of the film was also improved with increase in film thickness. The grain sizes of BGFCO films using scanning electron microscopy analysis were monotonously increase with thickness. The ferroelectric and magnetic tests indicated that the film thickness of about 310-450Â nm was an optimum thickness in our case where both the ferroelectric and ferromagnetic properties exhibit significant values consistent with the requirements for multiferroic material applications. The ferromagnetic behavior was enhanced for BGFCO film at 10Â K compared to that of 300Â K. The bifurcation of the field cooling and zero-field cooling magnetizations of BGFCO film in the whole temperature range from 5 to 300Â K indicated the typical characteristic of a spin-glass-like behavior originating from domain wall pinning effects. The mechanisms for the effect of thickness variation on ferroelectric and ferromagnetic characteristics of BGFCO films were discussed.
Related Topics
Physical Sciences and Engineering
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Authors
Daihong Kuang, Ping Tang, Shenghong Yang, Yueli Zhang,