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Effect of sintering temperature on magnetoelectric properties of Co0.8Cu0.2Fe2O4@(Pb0.95La0.05)(Zr0.86Ti0.14)O3 ceramics.

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Title: Effect of sintering temperature on magnetoelectric properties of Co0.8Cu0.2Fe2O4@(Pb0.95La0.05)(Zr0.86Ti0.14)O3 ceramics.
Authors: Li, Wenchuan1,2 (AUTHOR), Ao, Hong1,2 (AUTHOR), Liu, Xiaoxue1,2 (AUTHOR), Wu, Heng1,2 (AUTHOR), Zhong, Siqi1,2 (AUTHOR), Zhang, Yulin1,2 (AUTHOR), Gao, Rongli1,2 (AUTHOR) gaorongli2008@163.com, Deng, Xiaolin1,2 (AUTHOR), Chen, Gang1,2 (AUTHOR), Cai, Wei1,2 (AUTHOR), Fu, Chunlin1,2 (AUTHOR), Wang, Zhenhua1,2 (AUTHOR), Lei, Xiang1,2 (AUTHOR)
Source: Journal of Materials Science: Materials in Electronics. Sep2022, Vol. 33 Issue 25, p20413-20423. 11p.
Subjects: Ceramics, Temperature effect, Copper-titanium alloys, Transmission electron microscopes, Scanning electron microscopes, Dielectric properties, Permittivity
Abstract: The effects of sintering temperature on the dielectric, ferroelectric, and magnetic performance of Co0.8Cu0.2Fe2O4@(Pb0.95La0.05)(Zr0.86Ti0.14)O3 (CCFO@PLZT) composite ceramics with core–shell structure were investigated. The X-ray diffraction results confirmed the bi-phase structure of the composites, with insufficient sintering temperature and inadequate reaction leading to the presence of Pb2O3 and ZrO2. Transmission electron microscope images showed that the core–shell structure was prepared, and the scanning electron microscope images showed that the average grain size of the ceramic samples increased with the increase of the sintering temperature. The dielectric constant does not change linearly as the sintering temperature rises, but tends to increase and then decrease, which could be owing to the fact the crystallinity of impurities increases, affecting their dielectric properties. The dispersion indices were 1.58, 1.64, 1.60, 1.61, and 1.70 with increasing temperature, indicating that the relaxation of CCFO@PLZT ceramics was enhanced. The residual polarization intensity (Pr) of CCFO@PLZT ceramics increased first and then decreased with increasing sintering temperature, reaching a maximum value of Pr ~ 1.849 μC/cm2 at 1050 °C, but this may be caused by the excessive leakage current. Grain growth, density reduction and partial reduction of Fe3+ ions to Fe2+ ions lead to a decrease in saturation magnetization intensity (Ms), residual magnetization intensity (Mr) and coercivity (Hc) with the increase of sintering temperature. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Effect of sintering temperature on magnetoelectric properties of Co<subscript>0.8</subscript>Cu<subscript>0.2</subscript>Fe<subscript>2</subscript>O<subscript>4</subscript>@(Pb<subscript>0.95</subscript>La<subscript>0.05</subscript>)(Zr<subscript>0.86</subscript>Ti<subscript>0.14</subscript>)O<subscript>3</subscript> ceramics.
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+Science%3A+Materials+in+Electronics%22">Journal of Materials Science: Materials in Electronics</searchLink>. Sep2022, Vol. 33 Issue 25, p20413-20423. 11p.
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  Data: The effects of sintering temperature on the dielectric, ferroelectric, and magnetic performance of Co0.8Cu0.2Fe2O4@(Pb0.95La0.05)(Zr0.86Ti0.14)O3 (CCFO@PLZT) composite ceramics with core–shell structure were investigated. The X-ray diffraction results confirmed the bi-phase structure of the composites, with insufficient sintering temperature and inadequate reaction leading to the presence of Pb2O3 and ZrO2. Transmission electron microscope images showed that the core–shell structure was prepared, and the scanning electron microscope images showed that the average grain size of the ceramic samples increased with the increase of the sintering temperature. The dielectric constant does not change linearly as the sintering temperature rises, but tends to increase and then decrease, which could be owing to the fact the crystallinity of impurities increases, affecting their dielectric properties. The dispersion indices were 1.58, 1.64, 1.60, 1.61, and 1.70 with increasing temperature, indicating that the relaxation of CCFO@PLZT ceramics was enhanced. The residual polarization intensity (Pr) of CCFO@PLZT ceramics increased first and then decreased with increasing sintering temperature, reaching a maximum value of Pr ~ 1.849 μC/cm2 at 1050 °C, but this may be caused by the excessive leakage current. Grain growth, density reduction and partial reduction of Fe3+ ions to Fe2+ ions lead to a decrease in saturation magnetization intensity (Ms), residual magnetization intensity (Mr) and coercivity (Hc) with the increase of sintering temperature. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10854-022-08857-8
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        Text: English
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      – SubjectFull: Copper-titanium alloys
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      – SubjectFull: Transmission electron microscopes
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      – TitleFull: Effect of sintering temperature on magnetoelectric properties of Co0.8Cu0.2Fe2O4@(Pb0.95La0.05)(Zr0.86Ti0.14)O3 ceramics.
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              Text: Sep2022
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