Tìm kiếm theo cụm từ
Chi tiết
Tên Structure and magnetism of BaTi1-xFexO3-δ multiferroics (SCI)
Lĩnh vực Vật Lý
Tác giả N. V. Dang, Ha M. Nguyen, Pei-Yu Chuang, Jie-Hao, Zhang, T. D. Thanh, Chih-Wei Hu, Tsan-Yao Chen, Hung-Duen Yang, V. D. Lam, Chih-Hao Lee and L. V. Hong
Nhà xuất bản / Tạp chí Journal of Applied Physics 111, 07D915-3. Năm 2012
Số hiệu ISSN/ISBN
Tóm tắt nội dung

The effect of Fe dopant content, x, on the magnetism of polycrystalline BaTi1-xFexO3-d (BTFO) multiferroic samples was investigated using magnetization measurements in correlation with the crystallographic and local structures. The changes of coercivity and magnetization as functions of x are closely related to the variation of oxygen vacancy content, d, which can be deduced from the Fe oxidation number estimation using Fe K-edge x-ray absorption spectroscopy. It is shown that although the samples exhibit ferromagnetic (FM) hysteresis at room temperature, a dominant paramagnetic phase coexisting with the FM phase makes it difficult to identify the FM contribution to the total magnetization. Spin-glass and/or superparamagnetic behavior may be ruled out due to the fact that both zero-field-cooled and field-cooled thermomagnetization curves almost totally overlap together over the whole range of measured temperatures

Tải file Structure and magnetism of BaTi1-xFexO3-δ multiferroics (SCI) tại đây