Journal
CHEMICAL REVIEWS
Volume 120, Issue 3, Pages 1710-1787Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemrev.9b00507
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Funding
- National Natural Science Foundation of China [51807041, 51471057, 51677033]
- Natural Science Foundation of Heilongjiang Province of China [QC2018067]
- China Postdoctoral Science Foundation [2018M640302]
- Heilongjiang Postdoctoral Financial Assistance [LBH-Z18098]
- Fundamental Research Fundation for Universities of Heilongjiang Province [LGYC2018JC019]
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Since the positive influences of defects on the performance of electroceramics were discovered, investigations concerning on defects and aliovalent doping routes have grown rapidly in the fields of inorganic chemistry and condensed matter physics. In this article, we summarized the types of defects in electroceramics as well as characterization tools of defects and highlighted the effects of intrinsic and extrinsic defects on the material performances with the emphasis on dielectric, ferroelectric, and piezoelectric properties. We mainly introduced defect related theoretical simulation and experimental results in several typical incipient ferroelectrics, ferroelectrics, and antiferroelectrics. Hence, the influences of defects on the crystal lattice were summed up, and then the main physical mechanisms were highlighted. Particularly, the performance enhancements of aliovalently doped electroceramics were also evaluated and reviewed. Finally, the outlook and challenges were discussed on the basis of their current developments. This article covers not only an overview of the state-of-the-art advances of defects and aliovalent doping routes in electroceramics but also the future prospects that may open another window to tune the electrical performance of electroceramics via intentionally introducing certain defects.
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