PrBi4Fe0.5Co0.5Ti3O15多铁陶瓷的性能研究

doi:10.15541/jim20140469

无机材料学报 ›› 2015, Vol. 30 ›› Issue (5): 511-515.DOI: 10.15541/jim20140469 CSTR: 32189.14.10.15541/jim20140469

PrBi₄Fe_0.5Co_0.5Ti₃O₁₅多铁陶瓷的性能研究

陈春霞1^,2, 李浩然², 郑仁奎²

(1. 安庆师范学院物理与电气工程学院, 安庆246000; 2. 中国科学院上海硅酸盐研究所, 上海200050)

收稿日期:2014-09-17 修回日期:2014-11-13 出版日期:2015-05-20 网络出版日期:2015-04-28
作者简介:陈春霞(1969–), 女, 副教授. E-mail: ccxhzq@163.com
基金资助:
国家自然科学基金(51172259)

Properties of Multiferroic PrBi₄Fe_0.5Co_0.5Ti₃O₁₅ Ceramics

CHEN Chun-Xia^1,2, LI Hao-Ran², ZHENG Ren-Kui²

(1. School of Physics and Electrical Engineering, Anqing Teacher College, Anqing 246000, China; 2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China)

Received:2014-09-17 Revised:2014-11-13 Published:2015-05-20 Online:2015-04-28
About author:CHEN Chun-Xia. E-mail: ccxhzq@163.com
Supported by:
National Natural Science Foundation of China (51172259)

摘要/Abstract

摘要：

采用传统固相反应法与两步合成法制备了PrBi₄Fe_0.5Co_0.5Ti₃O₁₅陶瓷, 研究了Pr与Co共掺杂对Bi₅FeTi₃O₁₅陶瓷的结构、磁性能以及介电性能的影响。X射线衍射分析显示, 传统固相反应法制备的样品比两步法制备的样品更容易形成单相结构。铁电和磁性测量证明样品具有多铁性, 并且Pr与Co共掺杂能大幅提高材料的磁性能, 固相反应法与两步合成法制备的样品在室温下的剩余磁化强度(2M_r)分别为0.315, 0.576 Am²/kg, 比文献报道的Bi₅FeTi₃O₁₅陶瓷的2M_r ( 2.7 Am²/kg ) 高5个数量级, 比掺Co的Bi₅Fe_0.5Co_0.5Ti₃O₁₅陶瓷2M_r ( 7.8×10^-3 Am²/kg ) 高2个数量级。

null

关键词: 多铁陶瓷, 固相反应法, 磁性能, 介电性能

Abstract:

PrBi₄Fe_0.5Co_0.5Ti₃O₁₅ compounds were prepared either by conventional solid-state reaction method or by two-step method. X-ray diffraction analyses indicate that the PrBi₄Fe_0.5Co_0.5Ti₃O₁₅ samples which were synthesized by the conventional solid-state reaction method favors the formation of single phase four-layer Aurivillius phase more easily than the samples prepared by the two-step method. The multiferroic properties of the samples at room temperature were demonstrated by ferroelectric and magnetic measurements. The samples exhibit significantly enhanced magnetic properties by Pr/Co co-substitution. The remnant magnetization (2M_r) of the samples prepared by the conventional solid-state reaction and two-step methods are 0.315 and 0.576 Am²/kg, respectively, approximately five orders larger than that of the reported Bi5FeTi₃O₁₅ ceramics (2.7×10^-6 Am²/kg) and two orders of the reported Co-doped Bi₅FeTi₃O₁₅ ceramics (7.8×10^-3 Am²/kg).

Key words: multiferroic ceramics, solid state reaction, magnetic property, dielectric property

中图分类号:

O469
O432

陈春霞, 李浩然, 郑仁奎. PrBi₄Fe_0.5Co_0.5Ti₃O₁₅多铁陶瓷的性能研究[J]. 无机材料学报, 2015, 30(5): 511-515.

CHEN Chun-Xia, LI Hao-Ran, ZHENG Ren-Kui. Properties of Multiferroic PrBi₄Fe_0.5Co_0.5Ti₃O₁₅ Ceramics[J]. Journal of Inorganic Materials, 2015, 30(5): 511-515.

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PrBi₄Fe_0.5Co_0.5Ti₃O₁₅多铁陶瓷的性能研究

Properties of Multiferroic PrBi₄Fe_0.5Co_0.5Ti₃O₁₅ Ceramics

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