Investigation on Multiferroic Properties and Conduction Mechanism in Cobalt Doped Bi0.9Nd0.1FeO3 Solid Solutions

IF 1.5 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS

Transactions of the Indian Ceramic Society Pub Date : 2021-04-03 DOI:10.1080/0371750X.2021.1915874

Anilesh Kumar, Preeti Sharm, J. Pal, Anupinder Singh, R. Kundu, R. Punia

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Abstract

Bi0.9Nd0. 1Fe1–x Co x O3 (x = 0.025, 0.050, 0.075 and 0.1) solid solutions have been synthesized by doping of Co3+ at the Fe3+ site using solid-state reaction method. The prepared solid solutions have been investigated for their structural, magnetic, ferroelectric and magneto-dielectric properties and conduction mechanism. The XRD study reveals that all the solid solutions possess a rhombohedral symmetry. The vibrating sample magnetometer study reveals that all the samples possess magnetic orders and the remnant magnetization has been found to be increased from 0.2388 emu/g for x = 0.025 to 0.7112 emu/g for x = 0.1. The non-Debye type dielectric relaxation has been investigated for all the samples. The frequency dependent ac conductivity data follows Jonscher’s Power law. Variation of exponent n versus temperature follows the overlapping large polaron tunneling conduction model. The maximum value of remanent polarization (∼0.152 μC/cm2) was found for x = 0.1. All the samples exhibit positive magneto-dielectric response in the low-frequency region with the highest magneto-capacitance value of 13.54% at 500 Hz for sample x = 0.1. GRAPHICAL ABSTRACT

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钴掺杂Bi0.9Nd0.1FeO3固溶体的多铁磁性及导电机理研究

采用固相反应方法在Fe3+位置掺杂Co3+，合成了Bi0.9Nd0.1Fe1–xCoxO3（x=0.025、0.050、0.075和0.1）固溶体。研究了所制备的固溶体的结构、磁性、铁电和磁介电性能以及导电机理。XRD研究表明，所有固溶体都具有菱面体对称性。振动样品磁强计研究表明，所有样品都具有磁阶，并且发现残余磁化强度从x=0.025的0.2388 emu/g增加到x=0.1的0.7112 emu/g。研究了所有样品的非德拜型介电弛豫。与频率相关的交流电导率数据遵循Jonscher幂定律。指数n随温度的变化遵循重叠的大极化子隧穿传导模型。x=0.1时，剩余极化的最大值（～0.152μC/cm2）。所有样品在低频区都表现出正的磁介电响应，对于样品x=0.1，在500Hz时的最高磁电容值为13.54%。图形摘要

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来源期刊

Transactions of the Indian Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

2.40

自引率

8.30%

发文量

审稿时长

2.3 months

期刊介绍： Transactions of the Indian Ceramic Society is a quarterly Journal devoted to current scientific research, technology and industry-related news on glass and ceramics. The Journal covers subjects such as the chemical, mechanical, optical, electronic and spectroscopic properties of glass and ceramics, and characterization of materials belonging to this family. The Editor invites original research papers, topical reviews, opinions and achievements, as well as industry profiles for publication. The contributions should be accompanied by abstracts, keywords and other details, as outlined in the Instructions for Authors section. News, views and other comments on activities of specific industries and organizations, and also analyses of industrial scenarios are also welcome.