Sm、Zr共掺杂对BiFeO3陶瓷结构、电性以及磁性的影响  

Effect of Sm and Zr co-substitution on structure, electrical and magnetic properties of BiFeO3 ceramics

加关注

作  者:赵浩婷 杨如霞 卢玉明 李冠男 ZHAO Haoting;YANG Ruxia;LU Yuming;LI Guannan(Faculty of Materials and Energy, Southwest University, Chongqing 400715, China;School of Physical Science and Technology, Southwest University, Chongqing 400715,China)

机构地区:[1]西南大学材料与能源学部,重庆400715 [2]西南大学物理科学与技术学院,重庆400715

出  处:《功能材料》2019年第1期1075-1080,共6页Journal of Functional Materials

基  金:国家自然科学基金资助项目(51501159,51802270);本科生科技创新基金资助项目(20172303003).

摘  要:采用固相烧结法合成Bi0.9Sm0.1Fe1-xZrxO3(BSFZO,x=0~0.08)陶瓷样品。X射线衍射图谱表明所有样品均为三方结构,空间群为R3c。Rietveld精修表明,随着Zr含量的增加,晶胞参数逐渐增大。利用扫描电镜对样品表面形貌分析可知,Zr元素的掺杂减缓了晶胞的生长速度,晶粒尺寸变小。Bi0.9Sm0.1Fe1-xZrxO3样品的剩余极化随着x的增加先增大而后减小。当x=0.04时达到最大值。Bi0.9Sm0.1Fe1-xZrxO3的介电常数随着x增加逐渐降低,而漏电流几乎没有变化。Zr^4+离子的引入,增强了样品的铁磁特性,当x=0.06时,剩余磁化强度达到最大值。The Bi0.9Sm0.1Fe1-xZrxO3 (BSFZO, x =0-0.08) samples were prepared using the conventional solid state sintering method. The XRD patterns of Bi0.9Sm0.1Fe1-xZrxO3 could be ascribed to a rhombohedral structure having space group R3c. Structure refinement of the XRD patterns showed that the lattice parameters were increasing with the increase of in Zr^4+ content. The average grain size of the samples significantly decreased with the Zr doping due to the suppressed of grain growth caused by the Zr substitution. The remnant polarization ( Pr) and coercive field ( Ec) increased firstly and then decreased with the increasing Zr contents. Forx =0.04 sample, the Pr and Ec reached the maximum value. The dielectric constant decreased with the x increasing, while the leakage current was nearly unchanged. The ferromagnetic properties were enhanced by the Zr substitution. Forx =0.06 sample, the residual magnetization reached the maximum.

关 键 词:多铁材料 铁电特性 铁磁特性 BIFEO3 

分 类 号:O469[理学—凝聚态物理;理学—电子物理学;理学—物理]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象