Abstract
The rapid advancement of information technology has necessitated the development of materials with enhanced properties. NiZn ferrite is one of the focal points among this area due to its superior magnetic and dielectric properties; however, the sintering temperature is usually > 1200 °C. In this study, dense Ni0.5Zn0.5Fe2O4 (NZFO) ceramics were synthesized by a cold sintering process (CSP) associated with a post heat treatment. The relative density for NZFO ceramics reaches a value of 97% when annealed at 1100 °C with saturation magnetization 79.3 emu/g and dielectric constant 22.1 at 1 MHz, which are higher than NZFO ceramics prepared by conventional sintering at 1100 °C. The improved performance for NZFO ceramics prepared by CSP-assisted process is ascribed to the higher density and fine microstructures. These findings suggest that cold sintering process technique holds promising potential for enhancing the performance of ferrite ceramics.
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Funding
Author Weiping Zhou has received research support from National Natural Science Foundation of China (Grant No. 52061030), the Jiangxi Provincial Natural Science Foundation (ZBG20230418039), the “shuangqian” program (jxsq2019101047) of Jiangxi province. Author Guangsheng Luo has received research support from the Key Research and Key Projects Foundation of Jiangxi Province (20212BBE51013), and the Foundation of National Laboratory of Solid State Microstructures (M35026).
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All authors contributed to the manuscript. All authors read and approved the final manuscript. MY contributed toward investigation and validation; ZW contributed toward methodology and investigation; WZ contributed toward writing—review & editing and funding acquisition; JD contributed toward formal analysis; JM contributed toward software; TW contributed toward data curation; HW contributed toward data curation; LX contributed toward data curation; FG contributed toward data curation; ZC contributed toward software; GL contributed toward methodology.
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Yu, M., Wang, Z., Zhou, W. et al. Improved magnetic and dielectric properties for NiZn ferrites by using cold sintering-assisted process. J Mater Sci: Mater Electron 35, 334 (2024). https://doi.org/10.1007/s10854-024-12096-4
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DOI: https://doi.org/10.1007/s10854-024-12096-4