[1]张怀武,贺颖,凌味未.CaCu3Ti4O12/NiCuZn铁氧体基磁电复合材料研究[J].中国材料进展,2012,(7):001-9.[doi:10.7502/j.issn.1674-3962.2012.07.01]
　ZHANG Huaiwu,HE Ying,LIN Weiwei.Investigations on CaCu3Ti4O12/NiCuZn Magnetoelectric Composite Materials[J].MATERIALS CHINA,2012,(7):001-9.[doi:10.7502/j.issn.1674-3962.2012.07.01]
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CaCu3Ti4O12/NiCuZn铁氧体基磁电复合材料研究()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期数:
2012年第7期
页码:
001-9
栏目:
特约研究论文
出版日期:
2012-07-25

文章信息/Info

Title:
Investigations on CaCu3Ti4O12/NiCuZn Magnetoelectric Composite Materials
作者:
张怀武; 贺颖; 凌味未
（电子科技大学 电子薄膜与集成器件国家重点实验室，四川 成都 610054）
Author(s):
ZHANG Huaiwu; HE Ying; LIN Weiwei
(State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chendu 610054, China)
关键词:
磁电复合材料; CCTO; NiCuZn; 低温烧结
DOI:
10.7502/j.issn.1674-3962.2012.07.01
文献标志码:
A
摘要:
将CCTO（CaCu3Ti4O12）与NiCuZn铁氧体进行复合，系统地研究了组分变化对这种新型磁电复合材料的烧结性能、晶相结构、显微结构和磁电性能的影响。随后，为了实现复合材料的低温烧结以及综合考虑复相陶瓷的磁电性能，选取80%（质量分数，下同）NiCuZn铁氧体/20% CCTO组分，以BBSZ（Bi2O3H3BO3SiO2ZnO）玻璃作为助熔剂，研究了CCTO/NiCuZn铁氧体基复合材料的烧结行为和磁电性能。结果表明，掺杂BBSZ后，900 ℃下烧结的所有样品的密度均达到了复相陶瓷理论密度的95%，且复相陶瓷的介电常数和磁导率在1~30 MHz范围内均不依赖于频率的变化。在10 MHz的频率下，当BBSZ的含量从0增加到3%时，复相陶瓷磁导率μ从132增加到479，磁损耗tanδμ从0022下降到0017，同时，样品的谐振频率从109 Hz左右移动到32×108 Hz。相应地，复相陶瓷的介电常数ε从92增加到16，介电损耗tanδε从0069下降到0012。这一优异的整体性能使其有望实际应用。
Abstract:
In this paper, CCTO/NiCuZn ferrite composite materials were synthesized by the the conventional ceramic processing. The effect of composition on the sintering properties, crystallinephase structure, microstructure, magnetic and dielectric properties of the new ferrite dielectric composite materials had been investigated systematically. To realize low temperature sintering of the composite materials and by a comprehensive evaluation of both magnetic and dielectric properties, we chose the composition of  80% NiCuZn(mass fraction) ferrite/20 wt% CCTO in here. Then, BBSZ glass was considered as an additive and its effect on sintering behavior, magnetic and dielectric properties of CCTO/NiCuZn ferrite composite materials were studied. The results showed that the density of all BBSZ doped samples sintered at 900 ℃ had reached 95% of theoretical density. The dielectric constant and permeability of composites showed weak frequency dependence in a frequency range from 1 MHz to 30 MHz. At 10 MHz, as the BBSZ content increased from 0 to 3%(mass fraction), the permeability μ of composites increased from 132 to 479, and the magnetic loss tan δ μ decreased from 0022 to 0017 Meanwhile, the resonant frequency of composites decreased from 109 Hz to 32×108 Hz. Correspondingly, the dielectric constant ε of composites increased from 92 to 16, and the dielectric loss tanδε decreased from 0069 to 0012 The excellent whole performances of composites are expected to be able to promote practical applications. 
更新日期/Last Update: 2012-08-01