4.7 Article

A comparative study on the structural, dielectric and multiferroic properties of Co0.6Cu0.3Zn0.1Fe2O4/Ba0.9Sr0.1Zr0.1Ti0.9O3 composite ceramics

期刊

COMPOSITES PART B-ENGINEERING
卷 166, 期 -, 页码 204-212

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2018.12.010

关键词

Multiferroics; Composite ceramic; Structure; Multiferroic properties; Magnetoelectric coupling effect

资金

  1. Natural Science Foundation of Chongqing [CSTC2018jcyjAX0416, CSTC2016jcyjA0175, CSTC2016jcyjA0349]
  2. Young Scientific and Technological Research Program of Chongqing Municipal Education Commission [KJQN201801509]
  3. Excellent Talent Project in University of Chongqing [2017-35]
  4. Science and Technology Innovation Project of Social Undertakings and Peoples Livelihood Guarantee of Chongqing [cstc2017shmsA0192]
  5. Program for Innovation Teams in University of Chongqing, China [CXTDX201601032]
  6. Latter Foundation Project of Chongqing University of Science Technology [CKHQZZ2008002]
  7. Scientific & Technological Achievements Foundation Project of Chongqing University of Science Technology [CKKJCG2016328]
  8. Postgraduate technology innovation project of Chongqing University of Science Technology [YKICX1720205]

向作者/读者索取更多资源

High performance multiferroic composites have attracted great attentions because they are more beneficial to increasing magnetoelectric coupling effect. We report the effects of molar ratio (4:1, 2:1, 1:1, 1:2 and 1:4) on the structural, dielectric and multiferroic properties of Co0.6Cu0.3Zn0.1Fe2O4/Ba0.9Sr0.1Zr0.1Ti0.9O3 (CCZFO/BSZTO) composite ceramics prepared by sol-gel method. The XRD results confirm successful formation of the CCZFO/ BSZTO composites without presence of any impurity phase. The mean grain size is about 1.5 mm and it shows double dispersing behavior, the larger grains belong to CCZFO while the smaller ones are ascribed to BSZTO. The maximum dielectric constant and loss appear with the molar ratio is 1:1 due to its more grain boundaries. Two peaks appear in the epsilon similar to T curves, the peak corresponding to the lower temperature corresponds to the Curie temperature of BSZTO, while the other one is resulted by the relaxation polarization. The height of the relaxation peak decreases and the position shifts to higher temperature range with the increase of molar ratio. The maximal remanent polarization is 3.76 mu C/cm(2), obtained at 1 kHz when the molar ratio is 1:1. An enhanced magnetic properties are observed when the molar ratio is 1:1 due to the stronger interface interaction effect between the two phases. Strong direct magnetoelectric coupling coefficient of 1.53 V/(cm.Oe) is obtained at the field of 8000 Oe for the sample 1:4. These results may provide valuable information for improving the multiferroic properties of composite multiferroic materials.

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