A coexistence of multi-relaxor states in 0.5BiFeO(3)-0.5BaTiO(3)

作者：Wei, Yongxing^*; Jin, Changqing; Zeng, Yiming; Wang, Xiaotao; Gao, Dong; Wang, Xiaoli

来源：Ceramics International, 2017, 43(18): 17220-17224.

DOI：10.1016/j.ceramint.2017.09.030

• Ferroelectric relaxor
• Magnetic relaxor
• Antiferromagnetic
• Double-site disordered
• BiFeO3-based

Here we report our investigations on a pseudo-cubic 0.5BiFeO(3)-0.5BaTiO(3) ceramic (0.5BF-0.5BT) in which ferroelectric relaxor and antiferromagnetic and magnetic relaxor orders coexist. The temperature dependence of ferroelectric hysteresis loops and dielectric data confirms the existence of the ferroelectric relaxor state. The temperature of the maximum dielectric constant (T-m) at 1 MHz and electric freezing temperature (T-f) are 584 K and similar to 250 K, respectively. The magnetic data imply that a Neel transition occurs below 174 K. Most importantly, a magnetic relaxor order appears below similar to 6 K. The magnetic states of 0.5BF-0.5BT are rather different from those of BF-BT ceramics with the low BT concentration.

• 出版日期2017-12-15
• 单位西安工业大学; 西安交通大学; 昆明贵金属研究所