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Effects of mechanochemical activation on the structural and electrical properties of orthorhombic LuFeO 3 ceramics
Author(s) -
Wang Zhi,
Xiao Wenzhen,
Zhang Junkang,
Huang Jilong,
Dong Mingyang,
Yuan Haifeng,
Xu Tongshuai,
Shi Liran,
Dai Yuqiang,
Liu Qingqing,
Yang Jing
Publication year - 2021
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17743
Subject(s) - orthorhombic crystal system , raman spectroscopy , materials science , ceramic , x ray photoelectron spectroscopy , lattice constant , dielectric spectroscopy , analytical chemistry (journal) , multiferroics , scanning electron microscope , diffraction , chemical engineering , chemistry , crystallography , dielectric , crystal structure , ferroelectricity , composite material , electrochemistry , optics , engineering , physics , optoelectronics , electrode , chromatography
Orthorhombic LuFeO 3 is an important member of rare‐earth orthoferrites ReFeO 3 whose appealing physical features have drawn much attention due to its various potential applications. In this work, pure phase LuFeO 3 ceramics have been prepared by a mechanochemical activation‐assisted solid‐state reaction (MAS) method and conventional solid‐state reaction (CSS) method for comparison. X‐ray Diffraction (XRD) studies demonstrated that the mechanochemical activation process can lower the starting reaction temperature and substantially shorten the time to complete the reaction of LuFeO 3 ceramics. Besides, more homogeneous and highly denser LuFeO 3 ceramics can be obtained using the MAS method revealed by the density measurement and Scanning Electron Microscopy. It was revealed by XRD and Raman measurements that there is a little increase in lattice constant in the MAS sample compared to the CSS sample. The complex impedance spectra illustrated that the MAS sample has a much higher resistance than the CSS sample, which is caused by the higher density and fewer oxygen vacancies verified by X‐Ray Photoelectron Spectroscopy. We believe that this study will contribute to solving the common leakage problems in ReFeO 3 ceramics and the investigation of its multiferroic properties.