Fe掺杂对BiTaO_4陶瓷样品介电和铁电特性的影响
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摘要
为探究Fe掺杂对BiTaO4陶瓷样品介电特性和铁电特性的影响,采用传统固相烧结法制备了Bi Ta1-xFexO4-x(x=0,0.01,0.03)陶瓷样品,利用X线衍射仪和扫描电子显微镜对样品的晶体结构和表面形貌进行分析,利用精密阻抗分析仪和铁电分析仪对样品的介电性能和铁电性能进行检测.结果表明:Fe掺杂没有明显改变样品的晶体结构;随着Fe掺杂量的增加,样品的介电常数表现出较好的稳定性,介电损耗略有减小,且基本保持在tanδ=0.05以下,其漏电流先增大后减小,且掺杂样品均可得到比较完整的电滞回线.
In order to investigate the effects of Fe substitution on dielectric and ferroelectric properties of BiTaO4 ceramics,Bi Ta1-xFexO4-x(x = 0,0.01,0.03)ceramics were prepared by solid state reaction. Crystalline structure and morphology of the samples were investigated by X-ray diffraction(XRD)and scanning electron microscope(SEM). Dielectric properties and ferroelectric properties were measured by precision impedance analyzer and ferroelectric analyzer. The results showed that the Fe substitution did not result in phase transformation. With the increase of Fe concentration,the samples exhibit slight de-crease in dielectric loss,and remain below tan δ = 0.05. The leakage current density of the sample were firstly increased and then decreased along with the Fe concentration.
In order to investigate the effects of Fe substitution on dielectric and ferroelectric properties of BiTaO4 ceramics,Bi Ta1-xFexO4-x(x = 0,0.01,0.03)ceramics were prepared by solid state reaction. Crystalline structure and morphology of the samples were investigated by X-ray diffraction(XRD)and scanning electron microscope(SEM). Dielectric properties and ferroelectric properties were measured by precision impedance analyzer and ferroelectric analyzer. The results showed that the Fe substitution did not result in phase transformation. With the increase of Fe concentration,the samples exhibit slight de-crease in dielectric loss,and remain below tan δ = 0.05. The leakage current density of the sample were firstly increased and then decreased along with the Fe concentration.
引文
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[16]宋桂林,刘中山,付鹤鹏,等.稀土Dy掺杂对BiFeO3陶瓷样品介电和铁电特性的影响[J].河南师范大学学报:自然科学版,2011,39(1):61-64.
[17]宋桂林,杨海刚,王昕,等.Sm3+和Co3+共掺杂对BiFeO3多晶陶瓷介电特性的影响[J].硅酸盐学报,2010,38(12):2262-2267.
[2]蔺鹏婷,李祥,张丽,等.Bi1-xLaxFeO3块体材料多铁性研究[J].中国科学,2012,42(7):699-704.
[3]周同,袁淑娟,曹义明,等.Gd掺杂的多铁性陶瓷BiFeO3结构与磁性能研究[J].低温物理学报,2011,33(6):410-414.
[4]娄本浊,任亚杰,何军锋.(1-x)BiFeO3-x Co Fe2O4复合陶瓷介电性能的研究[J].压电与声光,2012,34(1):129-132.
[5]王志君,黄凤珍,杜颖超.BiFeO3薄膜铁电与磁性的厚度效应研究[J].南京大学学报:自然科学版,2012,48(5):666-670.
[6]戴中华,杜楠.高密度BiFeO3陶瓷的制备与介电性能[J].电子元件与材料,2011,30(6):1-4.
[7]常方高,宋桂林,房坤,等.氧含量对BiFeOδ多晶陶瓷介电特性的影响[J].物理学报,2007,56(10):6068-6073.
[8]宋桂林,苏建,周晓辉,等.Ho3+掺杂对BiFeO3陶瓷材料铁电和铁磁性能的影响[J].硅酸盐学报,2011,39(9):1445-1450.
[9]宋伟,王暄,张冬,等.多铁材料BiFeO3的制备与表征[J].无机材料学报,2012,27(10):1053-1057.
[10]戚梦瑶,朱克荣,黄传喜,等.掺La铁酸铋粉体的晶体结构[J].安徽大学学报:自然科学版,2011,35(6):54-59.
[11]常方高,于伏娟,宋桂林,等.烧结温度对Bi0.7Ba0.3FeO3陶瓷介电,铁电特性影响[J].河南师范大学学报:自然科学版,2009,37(6):52-55.
[12]李永涛,范云武,毛巍,等.多元共掺BiFeO3(La、Eu、Co)磁性和局域结构研究[J].材料导报B:研究篇,2012,26(7):13-16.
[13]郑朝丹,张端明,刘心明,等.Ti掺杂BiFeO3陶瓷的结构和铁电性能研究[J].无机材料学报,2009,24(4):745-748.
[14]JUN Y K,LEE S B,KIM M Y,et al.Dielectric and magnetic properties in Ta-substituted BiFeO3ceramics[J].Materials Research Society,2007,22(12):3397-3403.
[15]常方高,胡棚,王丹丹,等.Ho掺杂BiFeO3陶瓷的制备及介电性能[J].硅酸盐学报,2010,38(6):1002-1006.
[16]宋桂林,刘中山,付鹤鹏,等.稀土Dy掺杂对BiFeO3陶瓷样品介电和铁电特性的影响[J].河南师范大学学报:自然科学版,2011,39(1):61-64.
[17]宋桂林,杨海刚,王昕,等.Sm3+和Co3+共掺杂对BiFeO3多晶陶瓷介电特性的影响[J].硅酸盐学报,2010,38(12):2262-2267.