Influences of annealing temperature on dielectric, magnetic and magnetoelectric coupling properties of 0.7Bi0.5Na0.5TiO3-0.3NiFe2O4 ceramics

被引：7
作者：
Wang, L. G. [1 ]
Wang, X. X. [1 ]
Zhu, C. M. [1 ]
Yu, G. B. [1 ]
Zhao, Y. T. [1 ]
Huang, Z. H. [1 ]
Kong, W. J. [1 ]
Liu, F. C. [1 ]
Lv, F. Z. [1 ]
机构：
[1] Guangxi Normal Univ, Coll Phys Sci & Technol, Guilin 541004, Peoples R China
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2020年 / 494卷 / 494期
基金：
中国国家自然科学基金;
关键词：
Multiferroics; Magnetoelectric coupling; Dielectricity; Magnetism; MULTIFERROIC PROPERTIES; TITANATE;
D O I：
10.1016/j.jmmm.2019.165773
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Multiferroic 0.7Bi(0.5)Na(0.5)TiO(3)-0.3NiFe(2)O(4) ceramics were prepared by sol-gel method with various temperatures ranging from 950 to 1100 degrees C. The influence of annealing temperature on structure, morphology, dielectric, magnetic and magnetoelectric coupling effect was investigated. The refinement of x-ray diffraction data and the thermogravimetric-differential thermal analysis indicated the coexistence of perovskite and spinel phases with annealing temperature above 950 degrees C. Increasing grain size in surface morphology measurement was closely related to the increasing annealing temperature. Enhancement in dielectric properties was observed with increasing annealing temperature. The room-temperature ferromagnetic properties were also detected with saturated magnetic hysteresis loops under different annealing temperatures. Finally, magnetoelectric coupling effect was confirmed in the samples. The possible factors for room-temperature multiferroic properties were discussed with increasing annealing temperature. This study showed that annealing temperature could evidently affect the multiferroic properties in 0.7Bi(0.5)Na(0.5)TiO(3)-0.3NiFe(2)O(4) solid solution.
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页数：7
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