Structure and phase transition of BiFeO3 cubic micro-particles prepared by hydrothermal method
Structure and phase transition of BiFeO3 cubic micro-particles prepared by hydrothermal method
复制标题
水热法制备BiFeO3立方微粒的结构与相变
DOI:
10.1016/j.materresbull.2012.06.050
复制
发表时间:
2012-11
影响因子:
5.4
通讯作者:
Deng C.-Y.
中科院分区:
文献类型:
--
作者:
Yang R.-L.;Xiao R.-J.;Chen X.-M.;Deng C.-Y.
Single-phase bismuth ferrite (BiFeO3) powders were synthesized with a hydrothermal method by controlling the experimental conditions carefully. The powder structure, morphology and composition were characterized by using X-ray diffraction (XRD), scanning electron microscopy, transmission electron microscope, Raman measurement and X-ray photoelectron spectroscopy. The particles change from irregular agglomerations to regular cubes with increasing KOH concentration. The large BiFeO3cubic particles enjoy much smooth surfaces with well-matched element ratio (Bi:Fe:O=1:1:3) and chemical valence (Bi3+, Fe3+and O2−). The high temperature XRD and differential scanning calorimetry show that BiFeO3powders have a hexagonal perovskite structure with a space group R3c below 370°C and a rhombohedral structure with a space group R3m below 755°C. BiFeO3undergoes a phase transition in the temperature range of 755–817°C from rhombohedral structure to a cubic phase, then decomposes to liquid and Fe2O3above 939°C.
登录
查看更多内容
影响因子:
3.5
作者:
Jing-hui Jiang;Guanhua Gao;Runnan Yu;G. Qiu;Xiaohe Liu
通讯作者:
Jing-hui Jiang;Guanhua Gao;Runnan Yu;G. Qiu;Xiaohe Liu
影响因子:
4.6
作者:
Chen, Xian-Zhi;Qiu, Zhong-Cheng;Liu, Peng
通讯作者:
Liu, Peng
影响因子:
4
作者:
Xinyi Zhang;C. Lai;X. Zhao;Danyang Wang;J. Dai
通讯作者:
Xinyi Zhang;C. Lai;X. Zhao;Danyang Wang;J. Dai
影响因子:
56.9
作者:
Penn, RL;Banfield, JF
通讯作者:
Banfield, JF
影响因子:
4
作者:
Singh, MK;Jang, HM;Jo, MH
通讯作者:
Jo, MH