Study of electrical and magnetic properties of Ba, La and Pb doped Bi_{1鈭?span style='font-style: italic'>x鈭?span style='font-style: italic'>y}Dy_xC_yFe_{1鈭?span style='font-style: italic'>y}Ti_yO₃ perovskite ceramics

详细信息    查看全文

• 作者：Radheshyam Rai ; M.A. Valente ; Igor Bdikin ; Andrei L. Kholkin ; Seema Sharma
• 关键词：A. Ceramics ; A. Ferroelectric ; D. Dielectric properties ; D. Magnetic properties
• 刊名：Solid State Communications
• 出版年：February, 2014
• 年：2014
• 卷：180
• 期：Complete
• 页码：56-63
• 全文大小：1621 K

文摘

Polycrystalline sample of Bi_0.8Dy_0.1C_0.1Fe_0.9Ti_0.1O₃ (where C=Ba (DB), La (DL) and Pb (DP)) was prepared by a high-temperature solid state reaction technique. For the understanding of the multiferroic property, the relation between the crystal structures, magnetic transition and ferroelectric transitions with increasing temperature have been analyzed. X-ray diffraction analysis of the powders suggests the formation of a single-phase material with tetragonal structure. Studies of dielectric properties of the compound, studied in a frequency range 10⁴-10⁶ Hz at different temperatures (25-30 掳C), exhibits two dielectric anomalies one at 225 掳C and other around 375 掳C (ferroelectric-paraelectric type transition). By using VSM technique, a significant change in the magnetic properties was observed in the Bi_0.8Dy_0.1C_0.1Fe_0.9Ti_0.1O₃ system with Pb doping. It was seen that coercive field H_C and remnant magnetization M_R increase with for Pb but for La and Ba it decreases.